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 | * | |
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> | |
c53181af | 38 | #include <linux/export.h> |
c66ac9db NB |
39 | #include <net/sock.h> |
40 | #include <net/tcp.h> | |
41 | #include <scsi/scsi.h> | |
1078da16 | 42 | #include <scsi/scsi_device.h> |
c66ac9db NB |
43 | |
44 | #include <target/target_core_base.h> | |
c4795fb2 CH |
45 | #include <target/target_core_backend.h> |
46 | #include <target/target_core_fabric.h> | |
c66ac9db | 47 | |
e26d99ae | 48 | #include "target_core_internal.h" |
c66ac9db | 49 | #include "target_core_alua.h" |
c66ac9db NB |
50 | #include "target_core_pr.h" |
51 | #include "target_core_ua.h" | |
52 | ||
53 | static void se_dev_start(struct se_device *dev); | |
54 | static void se_dev_stop(struct se_device *dev); | |
55 | ||
e3d6f909 AG |
56 | static struct se_hba *lun0_hba; |
57 | static struct se_subsystem_dev *lun0_su_dev; | |
58 | /* not static, needed by tpg.c */ | |
59 | struct se_device *g_lun0_dev; | |
60 | ||
5951146d | 61 | int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 62 | { |
c66ac9db | 63 | struct se_lun *se_lun = NULL; |
e3d6f909 | 64 | struct se_session *se_sess = se_cmd->se_sess; |
5951146d | 65 | struct se_device *dev; |
c66ac9db | 66 | unsigned long flags; |
c66ac9db | 67 | |
d8144955 FC |
68 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
69 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
70 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 71 | return -ENODEV; |
d8144955 FC |
72 | } |
73 | ||
78faae37 | 74 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d AG |
75 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
76 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
77 | struct se_dev_entry *deve = se_cmd->se_deve; | |
78 | ||
79 | deve->total_cmds++; | |
80 | deve->total_bytes += se_cmd->data_length; | |
81 | ||
82 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
83 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
84 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
85 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
6708bb27 | 86 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
5951146d AG |
87 | " Access for 0x%08x\n", |
88 | se_cmd->se_tfo->get_fabric_name(), | |
89 | unpacked_lun); | |
78faae37 | 90 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d | 91 | return -EACCES; |
c66ac9db | 92 | } |
5951146d AG |
93 | |
94 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
95 | deve->write_bytes += se_cmd->data_length; | |
96 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
97 | deve->read_bytes += se_cmd->data_length; | |
98 | ||
c66ac9db NB |
99 | deve->deve_cmds++; |
100 | ||
5951146d AG |
101 | se_lun = deve->se_lun; |
102 | se_cmd->se_lun = deve->se_lun; | |
c66ac9db NB |
103 | se_cmd->pr_res_key = deve->pr_res_key; |
104 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db NB |
105 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
106 | } | |
78faae37 | 107 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
108 | |
109 | if (!se_lun) { | |
5951146d AG |
110 | /* |
111 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
112 | * REPORT_LUNS, et al to be returned when no active | |
113 | * MappedLUN=0 exists for this Initiator Port. | |
114 | */ | |
115 | if (unpacked_lun != 0) { | |
116 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
c66ac9db | 117 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
6708bb27 | 118 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 119 | " Access for 0x%08x\n", |
e3d6f909 | 120 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 121 | unpacked_lun); |
5951146d AG |
122 | return -ENODEV; |
123 | } | |
124 | /* | |
125 | * Force WRITE PROTECT for virtual LUN 0 | |
126 | */ | |
127 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
128 | (se_cmd->data_direction != DMA_NONE)) { | |
129 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
130 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 131 | return -EACCES; |
c66ac9db | 132 | } |
5951146d AG |
133 | |
134 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
135 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
136 | se_cmd->orig_fe_lun = 0; | |
5951146d | 137 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
c66ac9db NB |
138 | } |
139 | /* | |
140 | * Determine if the struct se_lun is online. | |
5951146d | 141 | * FIXME: Check for LUN_RESET + UNIT Attention |
c66ac9db | 142 | */ |
c66ac9db NB |
143 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
144 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
145 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 146 | return -ENODEV; |
c66ac9db NB |
147 | } |
148 | ||
5951146d AG |
149 | /* Directly associate cmd with se_dev */ |
150 | se_cmd->se_dev = se_lun->lun_se_dev; | |
151 | ||
152 | /* TODO: get rid of this and use atomics for stats */ | |
153 | dev = se_lun->lun_se_dev; | |
78faae37 | 154 | spin_lock_irqsave(&dev->stats_lock, flags); |
c66ac9db NB |
155 | dev->num_cmds++; |
156 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
157 | dev->write_bytes += se_cmd->data_length; | |
158 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
159 | dev->read_bytes += se_cmd->data_length; | |
78faae37 | 160 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
c66ac9db | 161 | |
c66ac9db | 162 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
5951146d | 163 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
c66ac9db NB |
164 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
165 | ||
166 | return 0; | |
167 | } | |
5951146d | 168 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 169 | |
5951146d | 170 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 171 | { |
c66ac9db NB |
172 | struct se_dev_entry *deve; |
173 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 174 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 175 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 176 | unsigned long flags; |
c66ac9db | 177 | |
d8144955 FC |
178 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
179 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
180 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 181 | return -ENODEV; |
d8144955 FC |
182 | } |
183 | ||
5e1be919 | 184 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d AG |
185 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
186 | deve = se_cmd->se_deve; | |
187 | ||
c66ac9db | 188 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
5951146d AG |
189 | se_tmr->tmr_lun = deve->se_lun; |
190 | se_cmd->se_lun = deve->se_lun; | |
191 | se_lun = deve->se_lun; | |
c66ac9db NB |
192 | se_cmd->pr_res_key = deve->pr_res_key; |
193 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 194 | } |
5e1be919 | 195 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
196 | |
197 | if (!se_lun) { | |
6708bb27 | 198 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 199 | " Access for 0x%08x\n", |
e3d6f909 | 200 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db NB |
201 | unpacked_lun); |
202 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 203 | return -ENODEV; |
c66ac9db NB |
204 | } |
205 | /* | |
206 | * Determine if the struct se_lun is online. | |
5951146d | 207 | * FIXME: Check for LUN_RESET + UNIT Attention |
c66ac9db | 208 | */ |
c66ac9db NB |
209 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
210 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 211 | return -ENODEV; |
c66ac9db NB |
212 | } |
213 | ||
5951146d AG |
214 | /* Directly associate cmd with se_dev */ |
215 | se_cmd->se_dev = se_lun->lun_se_dev; | |
216 | se_tmr->tmr_dev = se_lun->lun_se_dev; | |
217 | ||
5e1be919 | 218 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 219 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 220 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
221 | |
222 | return 0; | |
223 | } | |
5951146d | 224 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db NB |
225 | |
226 | /* | |
227 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
228 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
229 | * when a matching rtpi is found. | |
230 | */ | |
231 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
232 | struct se_node_acl *nacl, | |
233 | u16 rtpi) | |
234 | { | |
235 | struct se_dev_entry *deve; | |
236 | struct se_lun *lun; | |
237 | struct se_port *port; | |
238 | struct se_portal_group *tpg = nacl->se_tpg; | |
239 | u32 i; | |
240 | ||
241 | spin_lock_irq(&nacl->device_list_lock); | |
242 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
243 | deve = &nacl->device_list[i]; | |
244 | ||
245 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
246 | continue; | |
247 | ||
248 | lun = deve->se_lun; | |
6708bb27 AG |
249 | if (!lun) { |
250 | pr_err("%s device entries device pointer is" | |
c66ac9db | 251 | " NULL, but Initiator has access.\n", |
e3d6f909 | 252 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
253 | continue; |
254 | } | |
255 | port = lun->lun_sep; | |
6708bb27 AG |
256 | if (!port) { |
257 | pr_err("%s device entries device pointer is" | |
c66ac9db | 258 | " NULL, but Initiator has access.\n", |
e3d6f909 | 259 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
260 | continue; |
261 | } | |
262 | if (port->sep_rtpi != rtpi) | |
263 | continue; | |
264 | ||
265 | atomic_inc(&deve->pr_ref_count); | |
266 | smp_mb__after_atomic_inc(); | |
267 | spin_unlock_irq(&nacl->device_list_lock); | |
268 | ||
269 | return deve; | |
270 | } | |
271 | spin_unlock_irq(&nacl->device_list_lock); | |
272 | ||
273 | return NULL; | |
274 | } | |
275 | ||
276 | int core_free_device_list_for_node( | |
277 | struct se_node_acl *nacl, | |
278 | struct se_portal_group *tpg) | |
279 | { | |
280 | struct se_dev_entry *deve; | |
281 | struct se_lun *lun; | |
282 | u32 i; | |
283 | ||
284 | if (!nacl->device_list) | |
285 | return 0; | |
286 | ||
287 | spin_lock_irq(&nacl->device_list_lock); | |
288 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
289 | deve = &nacl->device_list[i]; | |
290 | ||
291 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
292 | continue; | |
293 | ||
294 | if (!deve->se_lun) { | |
6708bb27 | 295 | pr_err("%s device entries device pointer is" |
c66ac9db | 296 | " NULL, but Initiator has access.\n", |
e3d6f909 | 297 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
298 | continue; |
299 | } | |
300 | lun = deve->se_lun; | |
301 | ||
302 | spin_unlock_irq(&nacl->device_list_lock); | |
303 | core_update_device_list_for_node(lun, NULL, deve->mapped_lun, | |
304 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
305 | spin_lock_irq(&nacl->device_list_lock); | |
306 | } | |
307 | spin_unlock_irq(&nacl->device_list_lock); | |
308 | ||
309 | kfree(nacl->device_list); | |
310 | nacl->device_list = NULL; | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) | |
316 | { | |
317 | struct se_dev_entry *deve; | |
1dd0a067 | 318 | unsigned long flags; |
c66ac9db | 319 | |
1dd0a067 | 320 | spin_lock_irqsave(&se_nacl->device_list_lock, flags); |
c66ac9db NB |
321 | deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; |
322 | deve->deve_cmds--; | |
1dd0a067 | 323 | spin_unlock_irqrestore(&se_nacl->device_list_lock, flags); |
c66ac9db NB |
324 | } |
325 | ||
326 | void core_update_device_list_access( | |
327 | u32 mapped_lun, | |
328 | u32 lun_access, | |
329 | struct se_node_acl *nacl) | |
330 | { | |
331 | struct se_dev_entry *deve; | |
332 | ||
333 | spin_lock_irq(&nacl->device_list_lock); | |
334 | deve = &nacl->device_list[mapped_lun]; | |
335 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
336 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
337 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
338 | } else { | |
339 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
340 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
341 | } | |
342 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
343 | } |
344 | ||
345 | /* core_update_device_list_for_node(): | |
346 | * | |
347 | * | |
348 | */ | |
349 | int core_update_device_list_for_node( | |
350 | struct se_lun *lun, | |
351 | struct se_lun_acl *lun_acl, | |
352 | u32 mapped_lun, | |
353 | u32 lun_access, | |
354 | struct se_node_acl *nacl, | |
355 | struct se_portal_group *tpg, | |
356 | int enable) | |
357 | { | |
358 | struct se_port *port = lun->lun_sep; | |
359 | struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; | |
360 | int trans = 0; | |
361 | /* | |
362 | * If the MappedLUN entry is being disabled, the entry in | |
363 | * port->sep_alua_list must be removed now before clearing the | |
364 | * struct se_dev_entry pointers below as logic in | |
365 | * core_alua_do_transition_tg_pt() depends on these being present. | |
366 | */ | |
6708bb27 | 367 | if (!enable) { |
c66ac9db NB |
368 | /* |
369 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
25985edc | 370 | * that have not been explicitly concerted to MappedLUNs -> |
29fe609d NB |
371 | * struct se_lun_acl, but we remove deve->alua_port_list from |
372 | * port->sep_alua_list. This also means that active UAs and | |
373 | * NodeACL context specific PR metadata for demo-mode | |
374 | * MappedLUN *deve will be released below.. | |
c66ac9db | 375 | */ |
c66ac9db NB |
376 | spin_lock_bh(&port->sep_alua_lock); |
377 | list_del(&deve->alua_port_list); | |
378 | spin_unlock_bh(&port->sep_alua_lock); | |
379 | } | |
380 | ||
381 | spin_lock_irq(&nacl->device_list_lock); | |
382 | if (enable) { | |
383 | /* | |
384 | * Check if the call is handling demo mode -> explict LUN ACL | |
385 | * transition. This transition must be for the same struct se_lun | |
386 | * + mapped_lun that was setup in demo mode.. | |
387 | */ | |
388 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
389 | if (deve->se_lun_acl != NULL) { | |
6708bb27 | 390 | pr_err("struct se_dev_entry->se_lun_acl" |
c66ac9db NB |
391 | " already set for demo mode -> explict" |
392 | " LUN ACL transition\n"); | |
85dc98d9 | 393 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 394 | return -EINVAL; |
c66ac9db NB |
395 | } |
396 | if (deve->se_lun != lun) { | |
6708bb27 | 397 | pr_err("struct se_dev_entry->se_lun does" |
c66ac9db NB |
398 | " match passed struct se_lun for demo mode" |
399 | " -> explict LUN ACL transition\n"); | |
85dc98d9 | 400 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 401 | return -EINVAL; |
c66ac9db NB |
402 | } |
403 | deve->se_lun_acl = lun_acl; | |
404 | trans = 1; | |
405 | } else { | |
406 | deve->se_lun = lun; | |
407 | deve->se_lun_acl = lun_acl; | |
408 | deve->mapped_lun = mapped_lun; | |
409 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
410 | } | |
411 | ||
412 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
413 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
414 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
415 | } else { | |
416 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
417 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
418 | } | |
419 | ||
420 | if (trans) { | |
421 | spin_unlock_irq(&nacl->device_list_lock); | |
422 | return 0; | |
423 | } | |
424 | deve->creation_time = get_jiffies_64(); | |
425 | deve->attach_count++; | |
426 | spin_unlock_irq(&nacl->device_list_lock); | |
427 | ||
428 | spin_lock_bh(&port->sep_alua_lock); | |
429 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
430 | spin_unlock_bh(&port->sep_alua_lock); | |
431 | ||
432 | return 0; | |
433 | } | |
434 | /* | |
435 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
436 | * PR operation to complete. | |
437 | */ | |
438 | spin_unlock_irq(&nacl->device_list_lock); | |
439 | while (atomic_read(&deve->pr_ref_count) != 0) | |
440 | cpu_relax(); | |
441 | spin_lock_irq(&nacl->device_list_lock); | |
442 | /* | |
443 | * Disable struct se_dev_entry LUN ACL mapping | |
444 | */ | |
445 | core_scsi3_ua_release_all(deve); | |
446 | deve->se_lun = NULL; | |
447 | deve->se_lun_acl = NULL; | |
448 | deve->lun_flags = 0; | |
449 | deve->creation_time = 0; | |
450 | deve->attach_count--; | |
451 | spin_unlock_irq(&nacl->device_list_lock); | |
452 | ||
453 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
454 | return 0; | |
455 | } | |
456 | ||
457 | /* core_clear_lun_from_tpg(): | |
458 | * | |
459 | * | |
460 | */ | |
461 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
462 | { | |
463 | struct se_node_acl *nacl; | |
464 | struct se_dev_entry *deve; | |
465 | u32 i; | |
466 | ||
28638887 | 467 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 468 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
28638887 | 469 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
470 | |
471 | spin_lock_irq(&nacl->device_list_lock); | |
472 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
473 | deve = &nacl->device_list[i]; | |
474 | if (lun != deve->se_lun) | |
475 | continue; | |
476 | spin_unlock_irq(&nacl->device_list_lock); | |
477 | ||
478 | core_update_device_list_for_node(lun, NULL, | |
479 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, | |
480 | nacl, tpg, 0); | |
481 | ||
482 | spin_lock_irq(&nacl->device_list_lock); | |
483 | } | |
484 | spin_unlock_irq(&nacl->device_list_lock); | |
485 | ||
28638887 | 486 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 487 | } |
28638887 | 488 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
489 | } |
490 | ||
491 | static struct se_port *core_alloc_port(struct se_device *dev) | |
492 | { | |
493 | struct se_port *port, *port_tmp; | |
494 | ||
495 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
6708bb27 AG |
496 | if (!port) { |
497 | pr_err("Unable to allocate struct se_port\n"); | |
e3d6f909 | 498 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
499 | } |
500 | INIT_LIST_HEAD(&port->sep_alua_list); | |
501 | INIT_LIST_HEAD(&port->sep_list); | |
502 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
503 | spin_lock_init(&port->sep_alua_lock); | |
504 | mutex_init(&port->sep_tg_pt_md_mutex); | |
505 | ||
506 | spin_lock(&dev->se_port_lock); | |
507 | if (dev->dev_port_count == 0x0000ffff) { | |
6708bb27 | 508 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
509 | " 0x0000ffff\n"); |
510 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 511 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
512 | } |
513 | again: | |
514 | /* | |
515 | * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device | |
516 | * Here is the table from spc4r17 section 7.7.3.8. | |
517 | * | |
518 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
519 | * | |
520 | * Code Description | |
521 | * 0h Reserved | |
522 | * 1h Relative port 1, historically known as port A | |
523 | * 2h Relative port 2, historically known as port B | |
524 | * 3h to FFFFh Relative port 3 through 65 535 | |
525 | */ | |
526 | port->sep_rtpi = dev->dev_rpti_counter++; | |
6708bb27 | 527 | if (!port->sep_rtpi) |
c66ac9db NB |
528 | goto again; |
529 | ||
530 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
531 | /* | |
532 | * Make sure RELATIVE TARGET PORT IDENTIFER is unique | |
533 | * for 16-bit wrap.. | |
534 | */ | |
535 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
536 | goto again; | |
537 | } | |
538 | spin_unlock(&dev->se_port_lock); | |
539 | ||
540 | return port; | |
541 | } | |
542 | ||
543 | static void core_export_port( | |
544 | struct se_device *dev, | |
545 | struct se_portal_group *tpg, | |
546 | struct se_port *port, | |
547 | struct se_lun *lun) | |
548 | { | |
e3d6f909 | 549 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; |
c66ac9db NB |
550 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
551 | ||
552 | spin_lock(&dev->se_port_lock); | |
553 | spin_lock(&lun->lun_sep_lock); | |
554 | port->sep_tpg = tpg; | |
555 | port->sep_lun = lun; | |
556 | lun->lun_sep = port; | |
557 | spin_unlock(&lun->lun_sep_lock); | |
558 | ||
559 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
560 | spin_unlock(&dev->se_port_lock); | |
561 | ||
e3d6f909 | 562 | if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { |
c66ac9db NB |
563 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
564 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
6708bb27 | 565 | pr_err("Unable to allocate t10_alua_tg_pt" |
c66ac9db NB |
566 | "_gp_member_t\n"); |
567 | return; | |
568 | } | |
569 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
570 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
e3d6f909 | 571 | su_dev->t10_alua.default_tg_pt_gp); |
c66ac9db | 572 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
6708bb27 | 573 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
c66ac9db | 574 | " Group: alua/default_tg_pt_gp\n", |
e3d6f909 | 575 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
576 | } |
577 | ||
578 | dev->dev_port_count++; | |
579 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ | |
580 | } | |
581 | ||
582 | /* | |
583 | * Called with struct se_device->se_port_lock spinlock held. | |
584 | */ | |
585 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 586 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
587 | { |
588 | /* | |
589 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
590 | * to complete in __core_scsi3_alloc_registration() | |
591 | */ | |
592 | spin_unlock(&dev->se_port_lock); | |
593 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
594 | cpu_relax(); | |
595 | spin_lock(&dev->se_port_lock); | |
596 | ||
597 | core_alua_free_tg_pt_gp_mem(port); | |
598 | ||
599 | list_del(&port->sep_list); | |
600 | dev->dev_port_count--; | |
601 | kfree(port); | |
c66ac9db NB |
602 | } |
603 | ||
604 | int core_dev_export( | |
605 | struct se_device *dev, | |
606 | struct se_portal_group *tpg, | |
607 | struct se_lun *lun) | |
608 | { | |
609 | struct se_port *port; | |
610 | ||
611 | port = core_alloc_port(dev); | |
e3d6f909 AG |
612 | if (IS_ERR(port)) |
613 | return PTR_ERR(port); | |
c66ac9db NB |
614 | |
615 | lun->lun_se_dev = dev; | |
616 | se_dev_start(dev); | |
617 | ||
618 | atomic_inc(&dev->dev_export_obj.obj_access_count); | |
619 | core_export_port(dev, tpg, port, lun); | |
620 | return 0; | |
621 | } | |
622 | ||
623 | void core_dev_unexport( | |
624 | struct se_device *dev, | |
625 | struct se_portal_group *tpg, | |
626 | struct se_lun *lun) | |
627 | { | |
628 | struct se_port *port = lun->lun_sep; | |
629 | ||
630 | spin_lock(&lun->lun_sep_lock); | |
631 | if (lun->lun_se_dev == NULL) { | |
632 | spin_unlock(&lun->lun_sep_lock); | |
633 | return; | |
634 | } | |
635 | spin_unlock(&lun->lun_sep_lock); | |
636 | ||
637 | spin_lock(&dev->se_port_lock); | |
638 | atomic_dec(&dev->dev_export_obj.obj_access_count); | |
639 | core_release_port(dev, port); | |
640 | spin_unlock(&dev->se_port_lock); | |
641 | ||
642 | se_dev_stop(dev); | |
643 | lun->lun_se_dev = NULL; | |
644 | } | |
645 | ||
e76a35d6 | 646 | int target_report_luns(struct se_task *se_task) |
c66ac9db | 647 | { |
e76a35d6 | 648 | struct se_cmd *se_cmd = se_task->task_se_cmd; |
c66ac9db NB |
649 | struct se_dev_entry *deve; |
650 | struct se_lun *se_lun; | |
e3d6f909 | 651 | struct se_session *se_sess = se_cmd->se_sess; |
05d1c7c0 | 652 | unsigned char *buf; |
1078da16 | 653 | u32 cdb_offset = 0, lun_count = 0, offset = 8, i; |
c66ac9db | 654 | |
4949314c | 655 | buf = (unsigned char *) transport_kmap_data_sg(se_cmd); |
05d1c7c0 | 656 | |
c66ac9db NB |
657 | /* |
658 | * If no struct se_session pointer is present, this struct se_cmd is | |
659 | * coming via a target_core_mod PASSTHROUGH op, and not through | |
660 | * a $FABRIC_MOD. In that case, report LUN=0 only. | |
661 | */ | |
6708bb27 | 662 | if (!se_sess) { |
1078da16 | 663 | int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); |
c66ac9db NB |
664 | lun_count = 1; |
665 | goto done; | |
666 | } | |
667 | ||
e3d6f909 | 668 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db | 669 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
e3d6f909 | 670 | deve = &se_sess->se_node_acl->device_list[i]; |
c66ac9db NB |
671 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
672 | continue; | |
673 | se_lun = deve->se_lun; | |
674 | /* | |
675 | * We determine the correct LUN LIST LENGTH even once we | |
676 | * have reached the initial allocation length. | |
677 | * See SPC2-R20 7.19. | |
678 | */ | |
679 | lun_count++; | |
680 | if ((cdb_offset + 8) >= se_cmd->data_length) | |
681 | continue; | |
682 | ||
1078da16 NB |
683 | int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); |
684 | offset += 8; | |
c66ac9db NB |
685 | cdb_offset += 8; |
686 | } | |
e3d6f909 | 687 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db NB |
688 | |
689 | /* | |
690 | * See SPC3 r07, page 159. | |
691 | */ | |
692 | done: | |
4949314c | 693 | transport_kunmap_data_sg(se_cmd); |
c66ac9db NB |
694 | lun_count *= 8; |
695 | buf[0] = ((lun_count >> 24) & 0xff); | |
696 | buf[1] = ((lun_count >> 16) & 0xff); | |
697 | buf[2] = ((lun_count >> 8) & 0xff); | |
698 | buf[3] = (lun_count & 0xff); | |
699 | ||
d29a5b6a CH |
700 | se_task->task_scsi_status = GOOD; |
701 | transport_complete_task(se_task, 1); | |
03e98c9e | 702 | return 0; |
c66ac9db NB |
703 | } |
704 | ||
705 | /* se_release_device_for_hba(): | |
706 | * | |
707 | * | |
708 | */ | |
709 | void se_release_device_for_hba(struct se_device *dev) | |
710 | { | |
711 | struct se_hba *hba = dev->se_hba; | |
712 | ||
713 | if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || | |
714 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || | |
715 | (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || | |
716 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || | |
717 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) | |
718 | se_dev_stop(dev); | |
719 | ||
720 | if (dev->dev_ptr) { | |
721 | kthread_stop(dev->process_thread); | |
722 | if (dev->transport->free_device) | |
723 | dev->transport->free_device(dev->dev_ptr); | |
724 | } | |
725 | ||
726 | spin_lock(&hba->device_lock); | |
727 | list_del(&dev->dev_list); | |
728 | hba->dev_count--; | |
729 | spin_unlock(&hba->device_lock); | |
730 | ||
731 | core_scsi3_free_all_registrations(dev); | |
732 | se_release_vpd_for_dev(dev); | |
733 | ||
c66ac9db | 734 | kfree(dev); |
c66ac9db NB |
735 | } |
736 | ||
737 | void se_release_vpd_for_dev(struct se_device *dev) | |
738 | { | |
739 | struct t10_vpd *vpd, *vpd_tmp; | |
740 | ||
e3d6f909 | 741 | spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 742 | list_for_each_entry_safe(vpd, vpd_tmp, |
e3d6f909 | 743 | &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
744 | list_del(&vpd->vpd_list); |
745 | kfree(vpd); | |
746 | } | |
e3d6f909 | 747 | spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
748 | } |
749 | ||
c66ac9db NB |
750 | /* se_free_virtual_device(): |
751 | * | |
752 | * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. | |
753 | */ | |
754 | int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) | |
755 | { | |
05aea6e7 FC |
756 | if (!list_empty(&dev->dev_sep_list)) |
757 | dump_stack(); | |
c66ac9db NB |
758 | |
759 | core_alua_free_lu_gp_mem(dev); | |
760 | se_release_device_for_hba(dev); | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | static void se_dev_start(struct se_device *dev) | |
766 | { | |
767 | struct se_hba *hba = dev->se_hba; | |
768 | ||
769 | spin_lock(&hba->device_lock); | |
770 | atomic_inc(&dev->dev_obj.obj_access_count); | |
771 | if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { | |
772 | if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { | |
773 | dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; | |
774 | dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; | |
775 | } else if (dev->dev_status & | |
776 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { | |
777 | dev->dev_status &= | |
778 | ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
779 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
780 | } | |
781 | } | |
782 | spin_unlock(&hba->device_lock); | |
783 | } | |
784 | ||
785 | static void se_dev_stop(struct se_device *dev) | |
786 | { | |
787 | struct se_hba *hba = dev->se_hba; | |
788 | ||
789 | spin_lock(&hba->device_lock); | |
790 | atomic_dec(&dev->dev_obj.obj_access_count); | |
791 | if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { | |
792 | if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { | |
793 | dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; | |
794 | dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; | |
795 | } else if (dev->dev_status & | |
796 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { | |
797 | dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
798 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
799 | } | |
800 | } | |
801 | spin_unlock(&hba->device_lock); | |
c66ac9db NB |
802 | } |
803 | ||
804 | int se_dev_check_online(struct se_device *dev) | |
805 | { | |
56e34ee2 | 806 | unsigned long flags; |
c66ac9db NB |
807 | int ret; |
808 | ||
56e34ee2 | 809 | spin_lock_irqsave(&dev->dev_status_lock, flags); |
c66ac9db NB |
810 | ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
811 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; | |
56e34ee2 | 812 | spin_unlock_irqrestore(&dev->dev_status_lock, flags); |
c66ac9db NB |
813 | |
814 | return ret; | |
815 | } | |
816 | ||
817 | int se_dev_check_shutdown(struct se_device *dev) | |
818 | { | |
819 | int ret; | |
820 | ||
821 | spin_lock_irq(&dev->dev_status_lock); | |
822 | ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); | |
823 | spin_unlock_irq(&dev->dev_status_lock); | |
824 | ||
825 | return ret; | |
826 | } | |
827 | ||
525a48a2 NB |
828 | u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
829 | { | |
830 | u32 tmp, aligned_max_sectors; | |
831 | /* | |
832 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
833 | * transport_allocate_data_tasks() operation. | |
834 | */ | |
835 | tmp = rounddown((max_sectors * block_size), PAGE_SIZE); | |
836 | aligned_max_sectors = (tmp / block_size); | |
837 | if (max_sectors != aligned_max_sectors) { | |
838 | printk(KERN_INFO "Rounding down aligned max_sectors from %u" | |
839 | " to %u\n", max_sectors, aligned_max_sectors); | |
840 | return aligned_max_sectors; | |
841 | } | |
842 | ||
843 | return max_sectors; | |
844 | } | |
845 | ||
c66ac9db NB |
846 | void se_dev_set_default_attribs( |
847 | struct se_device *dev, | |
848 | struct se_dev_limits *dev_limits) | |
849 | { | |
850 | struct queue_limits *limits = &dev_limits->limits; | |
851 | ||
e3d6f909 AG |
852 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
853 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
854 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
855 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
856 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
857 | dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
858 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
859 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
860 | dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; | |
861 | dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; | |
862 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; | |
e22a7f07 | 863 | dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; |
5de619a3 | 864 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
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 | 884 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; |
525a48a2 NB |
885 | /* |
886 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
887 | */ | |
888 | limits->max_sectors = se_dev_align_max_sectors(limits->max_sectors, | |
889 | limits->logical_block_size); | |
e3d6f909 | 890 | dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; |
c66ac9db | 891 | /* |
015487b8 RD |
892 | * Set fabric_max_sectors, which is reported in block limits |
893 | * VPD page (B0h). | |
c66ac9db | 894 | */ |
015487b8 RD |
895 | dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; |
896 | /* | |
897 | * Set optimal_sectors from fabric_max_sectors, which can be | |
898 | * lowered via configfs. | |
899 | */ | |
900 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; | |
c66ac9db NB |
901 | /* |
902 | * queue_depth is based on subsystem plugin dependent requirements. | |
903 | */ | |
e3d6f909 AG |
904 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; |
905 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; | |
c66ac9db NB |
906 | } |
907 | ||
c66ac9db NB |
908 | int se_dev_set_max_unmap_lba_count( |
909 | struct se_device *dev, | |
910 | u32 max_unmap_lba_count) | |
911 | { | |
e3d6f909 | 912 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
6708bb27 | 913 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
e3d6f909 | 914 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
915 | return 0; |
916 | } | |
917 | ||
918 | int se_dev_set_max_unmap_block_desc_count( | |
919 | struct se_device *dev, | |
920 | u32 max_unmap_block_desc_count) | |
921 | { | |
e3d6f909 AG |
922 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
923 | max_unmap_block_desc_count; | |
6708bb27 | 924 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
e3d6f909 | 925 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
926 | return 0; |
927 | } | |
928 | ||
929 | int se_dev_set_unmap_granularity( | |
930 | struct se_device *dev, | |
931 | u32 unmap_granularity) | |
932 | { | |
e3d6f909 | 933 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; |
6708bb27 | 934 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
e3d6f909 | 935 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); |
c66ac9db NB |
936 | return 0; |
937 | } | |
938 | ||
939 | int se_dev_set_unmap_granularity_alignment( | |
940 | struct se_device *dev, | |
941 | u32 unmap_granularity_alignment) | |
942 | { | |
e3d6f909 | 943 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
6708bb27 | 944 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
e3d6f909 | 945 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
946 | return 0; |
947 | } | |
948 | ||
949 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) | |
950 | { | |
f55918fa | 951 | if (flag != 0 && flag != 1) { |
6708bb27 | 952 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 953 | return -EINVAL; |
c66ac9db | 954 | } |
f55918fa | 955 | |
c638830d AG |
956 | if (flag) { |
957 | pr_err("dpo_emulated not supported\n"); | |
958 | return -EINVAL; | |
959 | } | |
960 | ||
961 | return 0; | |
c66ac9db NB |
962 | } |
963 | ||
964 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
965 | { | |
f55918fa | 966 | if (flag != 0 && flag != 1) { |
6708bb27 | 967 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 968 | return -EINVAL; |
c66ac9db | 969 | } |
f55918fa | 970 | |
c638830d | 971 | if (flag && dev->transport->fua_write_emulated == 0) { |
f55918fa | 972 | pr_err("fua_write_emulated not supported\n"); |
e3d6f909 | 973 | return -EINVAL; |
c66ac9db | 974 | } |
e3d6f909 | 975 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; |
6708bb27 | 976 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
e3d6f909 | 977 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); |
c66ac9db NB |
978 | return 0; |
979 | } | |
980 | ||
981 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
982 | { | |
f55918fa | 983 | if (flag != 0 && flag != 1) { |
6708bb27 | 984 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 985 | return -EINVAL; |
c66ac9db | 986 | } |
f55918fa | 987 | |
c638830d AG |
988 | if (flag) { |
989 | pr_err("ua read emulated not supported\n"); | |
990 | return -EINVAL; | |
991 | } | |
992 | ||
993 | return 0; | |
c66ac9db NB |
994 | } |
995 | ||
996 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
997 | { | |
f55918fa | 998 | if (flag != 0 && flag != 1) { |
6708bb27 | 999 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1000 | return -EINVAL; |
c66ac9db | 1001 | } |
c638830d | 1002 | if (flag && dev->transport->write_cache_emulated == 0) { |
f55918fa | 1003 | pr_err("write_cache_emulated not supported\n"); |
e3d6f909 | 1004 | return -EINVAL; |
c66ac9db | 1005 | } |
e3d6f909 | 1006 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; |
6708bb27 | 1007 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
e3d6f909 | 1008 | dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); |
c66ac9db NB |
1009 | return 0; |
1010 | } | |
1011 | ||
1012 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
1013 | { | |
1014 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
6708bb27 | 1015 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1016 | return -EINVAL; |
c66ac9db NB |
1017 | } |
1018 | ||
1019 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1020 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1021 | " UA_INTRLCK_CTRL while dev_export_obj: %d count" |
1022 | " exists\n", dev, | |
1023 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1024 | return -EINVAL; |
c66ac9db | 1025 | } |
e3d6f909 | 1026 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; |
6708bb27 | 1027 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
e3d6f909 | 1028 | dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
1029 | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
1034 | { | |
1035 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1036 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1037 | return -EINVAL; |
c66ac9db NB |
1038 | } |
1039 | ||
1040 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1041 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
c66ac9db NB |
1042 | " dev_export_obj: %d count exists\n", dev, |
1043 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1044 | return -EINVAL; |
c66ac9db | 1045 | } |
e3d6f909 | 1046 | dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; |
6708bb27 | 1047 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
e3d6f909 | 1048 | dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1049 | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
1054 | { | |
1055 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1056 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1057 | return -EINVAL; |
c66ac9db NB |
1058 | } |
1059 | /* | |
1060 | * We expect this value to be non-zero when generic Block Layer | |
1061 | * Discard supported is detected iblock_create_virtdevice(). | |
1062 | */ | |
c638830d | 1063 | if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 1064 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
1065 | return -ENOSYS; |
1066 | } | |
1067 | ||
e3d6f909 | 1068 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; |
6708bb27 | 1069 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
c66ac9db NB |
1070 | dev, flag); |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
1075 | { | |
1076 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1077 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1078 | return -EINVAL; |
c66ac9db NB |
1079 | } |
1080 | /* | |
1081 | * We expect this value to be non-zero when generic Block Layer | |
1082 | * Discard supported is detected iblock_create_virtdevice(). | |
1083 | */ | |
c638830d | 1084 | if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 1085 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
1086 | return -ENOSYS; |
1087 | } | |
1088 | ||
e3d6f909 | 1089 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; |
6708bb27 | 1090 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
c66ac9db NB |
1091 | dev, flag); |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) | |
1096 | { | |
1097 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1098 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1099 | return -EINVAL; |
c66ac9db | 1100 | } |
e3d6f909 | 1101 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; |
6708bb27 | 1102 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
e3d6f909 | 1103 | (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1104 | return 0; |
1105 | } | |
1106 | ||
e22a7f07 RD |
1107 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
1108 | { | |
1109 | if ((flag != 0) && (flag != 1)) { | |
1110 | printk(KERN_ERR "Illegal value %d\n", flag); | |
1111 | return -EINVAL; | |
1112 | } | |
1113 | dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; | |
5de619a3 | 1114 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
e22a7f07 RD |
1115 | dev, flag); |
1116 | return 0; | |
1117 | } | |
1118 | ||
5de619a3 NB |
1119 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
1120 | { | |
1121 | if (flag != 0) { | |
1122 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" | |
1123 | " reordering not implemented\n", dev); | |
1124 | return -ENOSYS; | |
1125 | } | |
1126 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; | |
1127 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); | |
1128 | return 0; | |
1129 | } | |
1130 | ||
c66ac9db NB |
1131 | /* |
1132 | * Note, this can only be called on unexported SE Device Object. | |
1133 | */ | |
1134 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
1135 | { | |
c66ac9db | 1136 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
6708bb27 | 1137 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
c66ac9db NB |
1138 | " dev_export_obj: %d count exists\n", dev, |
1139 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1140 | return -EINVAL; |
c66ac9db | 1141 | } |
6708bb27 AG |
1142 | if (!queue_depth) { |
1143 | pr_err("dev[%p]: Illegal ZERO value for queue" | |
c66ac9db | 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) { | |
6708bb27 | 1150 | pr_err("dev[%p]: Passed queue_depth: %u" |
c66ac9db NB |
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) { | |
6708bb27 | 1159 | pr_err("dev[%p]: Passed queue_depth:" |
c66ac9db NB |
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; |
6708bb27 | 1169 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
c66ac9db NB |
1170 | dev, queue_depth); |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) | |
1175 | { | |
1176 | int force = 0; /* Force setting for VDEVS */ | |
1177 | ||
1178 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1179 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1180 | " max_sectors while dev_export_obj: %d count exists\n", |
1181 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1182 | return -EINVAL; |
c66ac9db | 1183 | } |
6708bb27 AG |
1184 | if (!max_sectors) { |
1185 | pr_err("dev[%p]: Illegal ZERO value for" | |
c66ac9db | 1186 | " max_sectors\n", dev); |
e3d6f909 | 1187 | return -EINVAL; |
c66ac9db NB |
1188 | } |
1189 | if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
6708bb27 | 1190 | pr_err("dev[%p]: Passed max_sectors: %u less than" |
c66ac9db NB |
1191 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, |
1192 | DA_STATUS_MAX_SECTORS_MIN); | |
e3d6f909 | 1193 | return -EINVAL; |
c66ac9db | 1194 | } |
e3d6f909 AG |
1195 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
1196 | if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { | |
6708bb27 | 1197 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1198 | " greater than TCM/SE_Device max_sectors:" |
1199 | " %u\n", dev, max_sectors, | |
e3d6f909 AG |
1200 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1201 | return -EINVAL; | |
c66ac9db NB |
1202 | } |
1203 | } else { | |
6708bb27 | 1204 | if (!force && (max_sectors > |
e3d6f909 | 1205 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { |
6708bb27 | 1206 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1207 | " greater than TCM/SE_Device max_sectors" |
1208 | ": %u, use force=1 to override.\n", dev, | |
e3d6f909 AG |
1209 | max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1210 | return -EINVAL; | |
c66ac9db NB |
1211 | } |
1212 | if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
6708bb27 | 1213 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1214 | " greater than DA_STATUS_MAX_SECTORS_MAX:" |
1215 | " %u\n", dev, max_sectors, | |
1216 | DA_STATUS_MAX_SECTORS_MAX); | |
e3d6f909 | 1217 | return -EINVAL; |
c66ac9db NB |
1218 | } |
1219 | } | |
525a48a2 NB |
1220 | /* |
1221 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
1222 | */ | |
1223 | max_sectors = se_dev_align_max_sectors(max_sectors, | |
1224 | dev->se_sub_dev->se_dev_attrib.block_size); | |
c66ac9db | 1225 | |
e3d6f909 | 1226 | dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; |
6708bb27 | 1227 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
c66ac9db NB |
1228 | dev, max_sectors); |
1229 | return 0; | |
1230 | } | |
1231 | ||
015487b8 RD |
1232 | int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) |
1233 | { | |
1234 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1235 | pr_err("dev[%p]: Unable to change SE Device" | |
1236 | " fabric_max_sectors while dev_export_obj: %d count exists\n", | |
1237 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
1238 | return -EINVAL; | |
1239 | } | |
1240 | if (!fabric_max_sectors) { | |
1241 | pr_err("dev[%p]: Illegal ZERO value for" | |
1242 | " fabric_max_sectors\n", dev); | |
1243 | return -EINVAL; | |
1244 | } | |
1245 | if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
1246 | pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" | |
1247 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, | |
1248 | DA_STATUS_MAX_SECTORS_MIN); | |
1249 | return -EINVAL; | |
1250 | } | |
1251 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
1252 | if (fabric_max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { | |
1253 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" | |
1254 | " greater than TCM/SE_Device max_sectors:" | |
1255 | " %u\n", dev, fabric_max_sectors, | |
1256 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); | |
1257 | return -EINVAL; | |
1258 | } | |
1259 | } else { | |
1260 | if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
1261 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" | |
1262 | " greater than DA_STATUS_MAX_SECTORS_MAX:" | |
1263 | " %u\n", dev, fabric_max_sectors, | |
1264 | DA_STATUS_MAX_SECTORS_MAX); | |
1265 | return -EINVAL; | |
1266 | } | |
1267 | } | |
1268 | /* | |
1269 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
1270 | */ | |
1271 | fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, | |
1272 | dev->se_sub_dev->se_dev_attrib.block_size); | |
1273 | ||
1274 | dev->se_sub_dev->se_dev_attrib.fabric_max_sectors = fabric_max_sectors; | |
1275 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", | |
1276 | dev, fabric_max_sectors); | |
1277 | return 0; | |
1278 | } | |
1279 | ||
c66ac9db NB |
1280 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
1281 | { | |
1282 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1283 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1284 | " optimal_sectors while dev_export_obj: %d count exists\n", |
1285 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
1286 | return -EINVAL; | |
1287 | } | |
e3d6f909 | 1288 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1289 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
c66ac9db NB |
1290 | " changed for TCM/pSCSI\n", dev); |
1291 | return -EINVAL; | |
1292 | } | |
015487b8 | 1293 | if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.fabric_max_sectors) { |
6708bb27 | 1294 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
015487b8 RD |
1295 | " greater than fabric_max_sectors: %u\n", dev, |
1296 | optimal_sectors, dev->se_sub_dev->se_dev_attrib.fabric_max_sectors); | |
c66ac9db NB |
1297 | return -EINVAL; |
1298 | } | |
1299 | ||
e3d6f909 | 1300 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; |
6708bb27 | 1301 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
c66ac9db NB |
1302 | dev, optimal_sectors); |
1303 | return 0; | |
1304 | } | |
1305 | ||
1306 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1307 | { | |
1308 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1309 | pr_err("dev[%p]: Unable to change SE Device block_size" |
c66ac9db NB |
1310 | " while dev_export_obj: %d count exists\n", dev, |
1311 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1312 | return -EINVAL; |
c66ac9db NB |
1313 | } |
1314 | ||
1315 | if ((block_size != 512) && | |
1316 | (block_size != 1024) && | |
1317 | (block_size != 2048) && | |
1318 | (block_size != 4096)) { | |
6708bb27 | 1319 | pr_err("dev[%p]: Illegal value for block_device: %u" |
c66ac9db NB |
1320 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
1321 | dev, block_size); | |
e3d6f909 | 1322 | return -EINVAL; |
c66ac9db NB |
1323 | } |
1324 | ||
e3d6f909 | 1325 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1326 | pr_err("dev[%p]: Not allowed to change block_size for" |
c66ac9db NB |
1327 | " Physical Device, use for Linux/SCSI to change" |
1328 | " block_size for underlying hardware\n", dev); | |
e3d6f909 | 1329 | return -EINVAL; |
c66ac9db NB |
1330 | } |
1331 | ||
e3d6f909 | 1332 | dev->se_sub_dev->se_dev_attrib.block_size = block_size; |
6708bb27 | 1333 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
c66ac9db NB |
1334 | dev, block_size); |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | struct se_lun *core_dev_add_lun( | |
1339 | struct se_portal_group *tpg, | |
1340 | struct se_hba *hba, | |
1341 | struct se_device *dev, | |
1342 | u32 lun) | |
1343 | { | |
1344 | struct se_lun *lun_p; | |
1345 | u32 lun_access = 0; | |
8d9efe53 | 1346 | int rc; |
c66ac9db NB |
1347 | |
1348 | if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { | |
6708bb27 | 1349 | pr_err("Unable to export struct se_device while dev_access_obj: %d\n", |
c66ac9db | 1350 | atomic_read(&dev->dev_access_obj.obj_access_count)); |
8d9efe53 | 1351 | return ERR_PTR(-EACCES); |
c66ac9db NB |
1352 | } |
1353 | ||
1354 | lun_p = core_tpg_pre_addlun(tpg, lun); | |
8d9efe53 SAS |
1355 | if (IS_ERR(lun_p)) |
1356 | return lun_p; | |
c66ac9db NB |
1357 | |
1358 | if (dev->dev_flags & DF_READ_ONLY) | |
1359 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1360 | else | |
1361 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; | |
1362 | ||
8d9efe53 SAS |
1363 | rc = core_tpg_post_addlun(tpg, lun_p, lun_access, dev); |
1364 | if (rc < 0) | |
1365 | return ERR_PTR(rc); | |
c66ac9db | 1366 | |
6708bb27 | 1367 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 AG |
1368 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1369 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, | |
1370 | tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); | |
c66ac9db NB |
1371 | /* |
1372 | * Update LUN maps for dynamically added initiators when | |
1373 | * generate_node_acl is enabled. | |
1374 | */ | |
e3d6f909 | 1375 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 1376 | struct se_node_acl *acl; |
28638887 | 1377 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 1378 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
1379 | if (acl->dynamic_node_acl && |
1380 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
1381 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
28638887 | 1382 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db | 1383 | core_tpg_add_node_to_devs(acl, tpg); |
28638887 | 1384 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1385 | } |
1386 | } | |
28638887 | 1387 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1388 | } |
1389 | ||
1390 | return lun_p; | |
1391 | } | |
1392 | ||
1393 | /* core_dev_del_lun(): | |
1394 | * | |
1395 | * | |
1396 | */ | |
1397 | int core_dev_del_lun( | |
1398 | struct se_portal_group *tpg, | |
1399 | u32 unpacked_lun) | |
1400 | { | |
1401 | struct se_lun *lun; | |
c66ac9db | 1402 | |
8d9efe53 SAS |
1403 | lun = core_tpg_pre_dellun(tpg, unpacked_lun); |
1404 | if (IS_ERR(lun)) | |
1405 | return PTR_ERR(lun); | |
c66ac9db NB |
1406 | |
1407 | core_tpg_post_dellun(tpg, lun); | |
1408 | ||
6708bb27 | 1409 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
e3d6f909 AG |
1410 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
1411 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, | |
1412 | tpg->se_tpg_tfo->get_fabric_name()); | |
c66ac9db NB |
1413 | |
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1418 | { | |
1419 | struct se_lun *lun; | |
1420 | ||
1421 | spin_lock(&tpg->tpg_lun_lock); | |
1422 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1423 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
c66ac9db | 1424 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1425 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1426 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1427 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1428 | spin_unlock(&tpg->tpg_lun_lock); |
1429 | return NULL; | |
1430 | } | |
1431 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1432 | ||
1433 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
6708bb27 | 1434 | pr_err("%s Logical Unit Number: %u is not free on" |
c66ac9db | 1435 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1436 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1437 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1438 | spin_unlock(&tpg->tpg_lun_lock); |
1439 | return NULL; | |
1440 | } | |
1441 | spin_unlock(&tpg->tpg_lun_lock); | |
1442 | ||
1443 | return lun; | |
1444 | } | |
1445 | ||
1446 | /* core_dev_get_lun(): | |
1447 | * | |
1448 | * | |
1449 | */ | |
1450 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1451 | { | |
1452 | struct se_lun *lun; | |
1453 | ||
1454 | spin_lock(&tpg->tpg_lun_lock); | |
1455 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1456 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
c66ac9db | 1457 | "_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1458 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1459 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1460 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1461 | spin_unlock(&tpg->tpg_lun_lock); |
1462 | return NULL; | |
1463 | } | |
1464 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1465 | ||
1466 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
6708bb27 | 1467 | pr_err("%s Logical Unit Number: %u is not active on" |
c66ac9db | 1468 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1469 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1470 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1471 | spin_unlock(&tpg->tpg_lun_lock); |
1472 | return NULL; | |
1473 | } | |
1474 | spin_unlock(&tpg->tpg_lun_lock); | |
1475 | ||
1476 | return lun; | |
1477 | } | |
1478 | ||
1479 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1480 | struct se_portal_group *tpg, | |
1481 | u32 mapped_lun, | |
1482 | char *initiatorname, | |
1483 | int *ret) | |
1484 | { | |
1485 | struct se_lun_acl *lacl; | |
1486 | struct se_node_acl *nacl; | |
1487 | ||
60d645a4 | 1488 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 1489 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1490 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1491 | *ret = -EOVERFLOW; |
1492 | return NULL; | |
1493 | } | |
1494 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); | |
6708bb27 | 1495 | if (!nacl) { |
c66ac9db NB |
1496 | *ret = -EINVAL; |
1497 | return NULL; | |
1498 | } | |
1499 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); | |
6708bb27 AG |
1500 | if (!lacl) { |
1501 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
1502 | *ret = -ENOMEM; |
1503 | return NULL; | |
1504 | } | |
1505 | ||
1506 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1507 | lacl->mapped_lun = mapped_lun; | |
1508 | lacl->se_lun_nacl = nacl; | |
1509 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); | |
1510 | ||
1511 | return lacl; | |
1512 | } | |
1513 | ||
1514 | int core_dev_add_initiator_node_lun_acl( | |
1515 | struct se_portal_group *tpg, | |
1516 | struct se_lun_acl *lacl, | |
1517 | u32 unpacked_lun, | |
1518 | u32 lun_access) | |
1519 | { | |
1520 | struct se_lun *lun; | |
1521 | struct se_node_acl *nacl; | |
1522 | ||
1523 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
6708bb27 AG |
1524 | if (!lun) { |
1525 | pr_err("%s Logical Unit Number: %u is not active on" | |
c66ac9db | 1526 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1527 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1528 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1529 | return -EINVAL; |
1530 | } | |
1531 | ||
1532 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1533 | if (!nacl) |
c66ac9db NB |
1534 | return -EINVAL; |
1535 | ||
1536 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1537 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1538 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1539 | ||
1540 | lacl->se_lun = lun; | |
1541 | ||
1542 | if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, | |
1543 | lun_access, nacl, tpg, 1) < 0) | |
1544 | return -EINVAL; | |
1545 | ||
1546 | spin_lock(&lun->lun_acl_lock); | |
1547 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
1548 | atomic_inc(&lun->lun_acl_count); | |
1549 | smp_mb__after_atomic_inc(); | |
1550 | spin_unlock(&lun->lun_acl_lock); | |
1551 | ||
6708bb27 | 1552 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 AG |
1553 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1554 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1555 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1556 | lacl->initiatorname); | |
1557 | /* | |
1558 | * Check to see if there are any existing persistent reservation APTPL | |
1559 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1560 | */ | |
1561 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); | |
1562 | return 0; | |
1563 | } | |
1564 | ||
1565 | /* core_dev_del_initiator_node_lun_acl(): | |
1566 | * | |
1567 | * | |
1568 | */ | |
1569 | int core_dev_del_initiator_node_lun_acl( | |
1570 | struct se_portal_group *tpg, | |
1571 | struct se_lun *lun, | |
1572 | struct se_lun_acl *lacl) | |
1573 | { | |
1574 | struct se_node_acl *nacl; | |
1575 | ||
1576 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1577 | if (!nacl) |
c66ac9db NB |
1578 | return -EINVAL; |
1579 | ||
1580 | spin_lock(&lun->lun_acl_lock); | |
1581 | list_del(&lacl->lacl_list); | |
1582 | atomic_dec(&lun->lun_acl_count); | |
1583 | smp_mb__after_atomic_dec(); | |
1584 | spin_unlock(&lun->lun_acl_lock); | |
1585 | ||
1586 | core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, | |
1587 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
1588 | ||
1589 | lacl->se_lun = NULL; | |
1590 | ||
6708bb27 | 1591 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 1592 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
1593 | tpg->se_tpg_tfo->get_fabric_name(), |
1594 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1595 | lacl->initiatorname, lacl->mapped_lun); |
1596 | ||
1597 | return 0; | |
1598 | } | |
1599 | ||
1600 | void core_dev_free_initiator_node_lun_acl( | |
1601 | struct se_portal_group *tpg, | |
1602 | struct se_lun_acl *lacl) | |
1603 | { | |
6708bb27 | 1604 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
1605 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1606 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1607 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1608 | lacl->initiatorname, lacl->mapped_lun); |
1609 | ||
1610 | kfree(lacl); | |
1611 | } | |
1612 | ||
1613 | int core_dev_setup_virtual_lun0(void) | |
1614 | { | |
1615 | struct se_hba *hba; | |
1616 | struct se_device *dev; | |
1617 | struct se_subsystem_dev *se_dev = NULL; | |
1618 | struct se_subsystem_api *t; | |
1619 | char buf[16]; | |
1620 | int ret; | |
1621 | ||
6708bb27 | 1622 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
1623 | if (IS_ERR(hba)) |
1624 | return PTR_ERR(hba); | |
1625 | ||
e3d6f909 | 1626 | lun0_hba = hba; |
c66ac9db NB |
1627 | t = hba->transport; |
1628 | ||
1629 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
6708bb27 AG |
1630 | if (!se_dev) { |
1631 | pr_err("Unable to allocate memory for" | |
c66ac9db NB |
1632 | " struct se_subsystem_dev\n"); |
1633 | ret = -ENOMEM; | |
1634 | goto out; | |
1635 | } | |
c66ac9db NB |
1636 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
1637 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
1638 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
1639 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
1640 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
1641 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
1642 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
1643 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
1644 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 1645 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
1646 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
1647 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
1648 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
1649 | se_dev->se_dev_hba = hba; | |
1650 | ||
1651 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); | |
6708bb27 AG |
1652 | if (!se_dev->se_dev_su_ptr) { |
1653 | pr_err("Unable to locate subsystem dependent pointer" | |
c66ac9db NB |
1654 | " from allocate_virtdevice()\n"); |
1655 | ret = -ENOMEM; | |
1656 | goto out; | |
1657 | } | |
e3d6f909 | 1658 | lun0_su_dev = se_dev; |
c66ac9db NB |
1659 | |
1660 | memset(buf, 0, 16); | |
1661 | sprintf(buf, "rd_pages=8"); | |
1662 | t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); | |
1663 | ||
1664 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
e3d6f909 AG |
1665 | if (IS_ERR(dev)) { |
1666 | ret = PTR_ERR(dev); | |
c66ac9db NB |
1667 | goto out; |
1668 | } | |
1669 | se_dev->se_dev_ptr = dev; | |
e3d6f909 | 1670 | g_lun0_dev = dev; |
c66ac9db NB |
1671 | |
1672 | return 0; | |
1673 | out: | |
e3d6f909 | 1674 | lun0_su_dev = NULL; |
c66ac9db | 1675 | kfree(se_dev); |
e3d6f909 AG |
1676 | if (lun0_hba) { |
1677 | core_delete_hba(lun0_hba); | |
1678 | lun0_hba = NULL; | |
c66ac9db NB |
1679 | } |
1680 | return ret; | |
1681 | } | |
1682 | ||
1683 | ||
1684 | void core_dev_release_virtual_lun0(void) | |
1685 | { | |
e3d6f909 AG |
1686 | struct se_hba *hba = lun0_hba; |
1687 | struct se_subsystem_dev *su_dev = lun0_su_dev; | |
c66ac9db | 1688 | |
6708bb27 | 1689 | if (!hba) |
c66ac9db NB |
1690 | return; |
1691 | ||
e3d6f909 AG |
1692 | if (g_lun0_dev) |
1693 | se_free_virtual_device(g_lun0_dev, hba); | |
c66ac9db NB |
1694 | |
1695 | kfree(su_dev); | |
1696 | core_delete_hba(hba); | |
1697 | } |