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> | |
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 | ||
5951146d | 62 | int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 63 | { |
c66ac9db | 64 | struct se_lun *se_lun = NULL; |
e3d6f909 | 65 | struct se_session *se_sess = se_cmd->se_sess; |
5951146d | 66 | struct se_device *dev; |
c66ac9db | 67 | unsigned long flags; |
c66ac9db | 68 | |
d8144955 FC |
69 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
70 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
71 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 72 | return -ENODEV; |
d8144955 FC |
73 | } |
74 | ||
78faae37 | 75 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d AG |
76 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
77 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
78 | struct se_dev_entry *deve = se_cmd->se_deve; | |
79 | ||
80 | deve->total_cmds++; | |
81 | deve->total_bytes += se_cmd->data_length; | |
82 | ||
83 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
84 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
85 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
86 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
6708bb27 | 87 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
5951146d AG |
88 | " Access for 0x%08x\n", |
89 | se_cmd->se_tfo->get_fabric_name(), | |
90 | unpacked_lun); | |
78faae37 | 91 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d | 92 | return -EACCES; |
c66ac9db | 93 | } |
5951146d AG |
94 | |
95 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
96 | deve->write_bytes += se_cmd->data_length; | |
97 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
98 | deve->read_bytes += se_cmd->data_length; | |
99 | ||
c66ac9db NB |
100 | deve->deve_cmds++; |
101 | ||
5951146d AG |
102 | se_lun = deve->se_lun; |
103 | se_cmd->se_lun = deve->se_lun; | |
c66ac9db NB |
104 | se_cmd->pr_res_key = deve->pr_res_key; |
105 | se_cmd->orig_fe_lun = unpacked_lun; | |
e3d6f909 | 106 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; |
c66ac9db NB |
107 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
108 | } | |
78faae37 | 109 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
110 | |
111 | if (!se_lun) { | |
5951146d AG |
112 | /* |
113 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
114 | * REPORT_LUNS, et al to be returned when no active | |
115 | * MappedLUN=0 exists for this Initiator Port. | |
116 | */ | |
117 | if (unpacked_lun != 0) { | |
118 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
c66ac9db | 119 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; |
6708bb27 | 120 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 121 | " Access for 0x%08x\n", |
e3d6f909 | 122 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 123 | unpacked_lun); |
5951146d AG |
124 | return -ENODEV; |
125 | } | |
126 | /* | |
127 | * Force WRITE PROTECT for virtual LUN 0 | |
128 | */ | |
129 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
130 | (se_cmd->data_direction != DMA_NONE)) { | |
131 | se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; | |
132 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 133 | return -EACCES; |
c66ac9db | 134 | } |
5951146d AG |
135 | |
136 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
137 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
138 | se_cmd->orig_fe_lun = 0; | |
139 | se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; | |
140 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; | |
c66ac9db NB |
141 | } |
142 | /* | |
143 | * Determine if the struct se_lun is online. | |
5951146d | 144 | * FIXME: Check for LUN_RESET + UNIT Attention |
c66ac9db | 145 | */ |
c66ac9db NB |
146 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
147 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
148 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 149 | return -ENODEV; |
c66ac9db NB |
150 | } |
151 | ||
5951146d AG |
152 | /* Directly associate cmd with se_dev */ |
153 | se_cmd->se_dev = se_lun->lun_se_dev; | |
154 | ||
155 | /* TODO: get rid of this and use atomics for stats */ | |
156 | dev = se_lun->lun_se_dev; | |
78faae37 | 157 | spin_lock_irqsave(&dev->stats_lock, flags); |
c66ac9db NB |
158 | dev->num_cmds++; |
159 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
160 | dev->write_bytes += se_cmd->data_length; | |
161 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
162 | dev->read_bytes += se_cmd->data_length; | |
78faae37 | 163 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
c66ac9db NB |
164 | |
165 | /* | |
166 | * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used | |
167 | * for tracking state of struct se_cmds during LUN shutdown events. | |
168 | */ | |
169 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); | |
5951146d | 170 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
a1d8b49a | 171 | atomic_set(&se_cmd->transport_lun_active, 1); |
c66ac9db NB |
172 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
173 | ||
174 | return 0; | |
175 | } | |
5951146d | 176 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 177 | |
5951146d | 178 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 179 | { |
c66ac9db NB |
180 | struct se_dev_entry *deve; |
181 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 182 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 183 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 184 | unsigned long flags; |
c66ac9db | 185 | |
d8144955 FC |
186 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { |
187 | se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; | |
188 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 189 | return -ENODEV; |
d8144955 FC |
190 | } |
191 | ||
5e1be919 | 192 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
5951146d AG |
193 | se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; |
194 | deve = se_cmd->se_deve; | |
195 | ||
c66ac9db | 196 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
5951146d AG |
197 | se_tmr->tmr_lun = deve->se_lun; |
198 | se_cmd->se_lun = deve->se_lun; | |
199 | se_lun = deve->se_lun; | |
c66ac9db NB |
200 | se_cmd->pr_res_key = deve->pr_res_key; |
201 | se_cmd->orig_fe_lun = unpacked_lun; | |
5951146d | 202 | se_cmd->se_orig_obj_ptr = se_cmd->se_dev; |
c66ac9db | 203 | } |
5e1be919 | 204 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
205 | |
206 | if (!se_lun) { | |
6708bb27 | 207 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 208 | " Access for 0x%08x\n", |
e3d6f909 | 209 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db NB |
210 | unpacked_lun); |
211 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 212 | return -ENODEV; |
c66ac9db NB |
213 | } |
214 | /* | |
215 | * Determine if the struct se_lun is online. | |
5951146d | 216 | * FIXME: Check for LUN_RESET + UNIT Attention |
c66ac9db | 217 | */ |
c66ac9db NB |
218 | if (se_dev_check_online(se_lun->lun_se_dev) != 0) { |
219 | se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
e3d6f909 | 220 | return -ENODEV; |
c66ac9db NB |
221 | } |
222 | ||
5951146d AG |
223 | /* Directly associate cmd with se_dev */ |
224 | se_cmd->se_dev = se_lun->lun_se_dev; | |
225 | se_tmr->tmr_dev = se_lun->lun_se_dev; | |
226 | ||
5e1be919 | 227 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 228 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 229 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
230 | |
231 | return 0; | |
232 | } | |
5951146d | 233 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db NB |
234 | |
235 | /* | |
236 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
237 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
238 | * when a matching rtpi is found. | |
239 | */ | |
240 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
241 | struct se_node_acl *nacl, | |
242 | u16 rtpi) | |
243 | { | |
244 | struct se_dev_entry *deve; | |
245 | struct se_lun *lun; | |
246 | struct se_port *port; | |
247 | struct se_portal_group *tpg = nacl->se_tpg; | |
248 | u32 i; | |
249 | ||
250 | spin_lock_irq(&nacl->device_list_lock); | |
251 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
252 | deve = &nacl->device_list[i]; | |
253 | ||
254 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
255 | continue; | |
256 | ||
257 | lun = deve->se_lun; | |
6708bb27 AG |
258 | if (!lun) { |
259 | pr_err("%s device entries device pointer is" | |
c66ac9db | 260 | " NULL, but Initiator has access.\n", |
e3d6f909 | 261 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
262 | continue; |
263 | } | |
264 | port = lun->lun_sep; | |
6708bb27 AG |
265 | if (!port) { |
266 | pr_err("%s device entries device pointer is" | |
c66ac9db | 267 | " NULL, but Initiator has access.\n", |
e3d6f909 | 268 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
269 | continue; |
270 | } | |
271 | if (port->sep_rtpi != rtpi) | |
272 | continue; | |
273 | ||
274 | atomic_inc(&deve->pr_ref_count); | |
275 | smp_mb__after_atomic_inc(); | |
276 | spin_unlock_irq(&nacl->device_list_lock); | |
277 | ||
278 | return deve; | |
279 | } | |
280 | spin_unlock_irq(&nacl->device_list_lock); | |
281 | ||
282 | return NULL; | |
283 | } | |
284 | ||
285 | int core_free_device_list_for_node( | |
286 | struct se_node_acl *nacl, | |
287 | struct se_portal_group *tpg) | |
288 | { | |
289 | struct se_dev_entry *deve; | |
290 | struct se_lun *lun; | |
291 | u32 i; | |
292 | ||
293 | if (!nacl->device_list) | |
294 | return 0; | |
295 | ||
296 | spin_lock_irq(&nacl->device_list_lock); | |
297 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
298 | deve = &nacl->device_list[i]; | |
299 | ||
300 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
301 | continue; | |
302 | ||
303 | if (!deve->se_lun) { | |
6708bb27 | 304 | pr_err("%s device entries device pointer is" |
c66ac9db | 305 | " NULL, but Initiator has access.\n", |
e3d6f909 | 306 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
307 | continue; |
308 | } | |
309 | lun = deve->se_lun; | |
310 | ||
311 | spin_unlock_irq(&nacl->device_list_lock); | |
312 | core_update_device_list_for_node(lun, NULL, deve->mapped_lun, | |
313 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
314 | spin_lock_irq(&nacl->device_list_lock); | |
315 | } | |
316 | spin_unlock_irq(&nacl->device_list_lock); | |
317 | ||
318 | kfree(nacl->device_list); | |
319 | nacl->device_list = NULL; | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) | |
325 | { | |
326 | struct se_dev_entry *deve; | |
327 | ||
328 | spin_lock_irq(&se_nacl->device_list_lock); | |
329 | deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; | |
330 | deve->deve_cmds--; | |
331 | spin_unlock_irq(&se_nacl->device_list_lock); | |
c66ac9db NB |
332 | } |
333 | ||
334 | void core_update_device_list_access( | |
335 | u32 mapped_lun, | |
336 | u32 lun_access, | |
337 | struct se_node_acl *nacl) | |
338 | { | |
339 | struct se_dev_entry *deve; | |
340 | ||
341 | spin_lock_irq(&nacl->device_list_lock); | |
342 | deve = &nacl->device_list[mapped_lun]; | |
343 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
344 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
345 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
346 | } else { | |
347 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
348 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
349 | } | |
350 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
351 | } |
352 | ||
353 | /* core_update_device_list_for_node(): | |
354 | * | |
355 | * | |
356 | */ | |
357 | int core_update_device_list_for_node( | |
358 | struct se_lun *lun, | |
359 | struct se_lun_acl *lun_acl, | |
360 | u32 mapped_lun, | |
361 | u32 lun_access, | |
362 | struct se_node_acl *nacl, | |
363 | struct se_portal_group *tpg, | |
364 | int enable) | |
365 | { | |
366 | struct se_port *port = lun->lun_sep; | |
367 | struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; | |
368 | int trans = 0; | |
369 | /* | |
370 | * If the MappedLUN entry is being disabled, the entry in | |
371 | * port->sep_alua_list must be removed now before clearing the | |
372 | * struct se_dev_entry pointers below as logic in | |
373 | * core_alua_do_transition_tg_pt() depends on these being present. | |
374 | */ | |
6708bb27 | 375 | if (!enable) { |
c66ac9db NB |
376 | /* |
377 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
25985edc | 378 | * that have not been explicitly concerted to MappedLUNs -> |
29fe609d NB |
379 | * struct se_lun_acl, but we remove deve->alua_port_list from |
380 | * port->sep_alua_list. This also means that active UAs and | |
381 | * NodeACL context specific PR metadata for demo-mode | |
382 | * MappedLUN *deve will be released below.. | |
c66ac9db | 383 | */ |
c66ac9db NB |
384 | spin_lock_bh(&port->sep_alua_lock); |
385 | list_del(&deve->alua_port_list); | |
386 | spin_unlock_bh(&port->sep_alua_lock); | |
387 | } | |
388 | ||
389 | spin_lock_irq(&nacl->device_list_lock); | |
390 | if (enable) { | |
391 | /* | |
392 | * Check if the call is handling demo mode -> explict LUN ACL | |
393 | * transition. This transition must be for the same struct se_lun | |
394 | * + mapped_lun that was setup in demo mode.. | |
395 | */ | |
396 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
397 | if (deve->se_lun_acl != NULL) { | |
6708bb27 | 398 | pr_err("struct se_dev_entry->se_lun_acl" |
c66ac9db NB |
399 | " already set for demo mode -> explict" |
400 | " LUN ACL transition\n"); | |
85dc98d9 | 401 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 402 | return -EINVAL; |
c66ac9db NB |
403 | } |
404 | if (deve->se_lun != lun) { | |
6708bb27 | 405 | pr_err("struct se_dev_entry->se_lun does" |
c66ac9db NB |
406 | " match passed struct se_lun for demo mode" |
407 | " -> explict LUN ACL transition\n"); | |
85dc98d9 | 408 | spin_unlock_irq(&nacl->device_list_lock); |
e3d6f909 | 409 | return -EINVAL; |
c66ac9db NB |
410 | } |
411 | deve->se_lun_acl = lun_acl; | |
412 | trans = 1; | |
413 | } else { | |
414 | deve->se_lun = lun; | |
415 | deve->se_lun_acl = lun_acl; | |
416 | deve->mapped_lun = mapped_lun; | |
417 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
418 | } | |
419 | ||
420 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
421 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
422 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
423 | } else { | |
424 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
425 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
426 | } | |
427 | ||
428 | if (trans) { | |
429 | spin_unlock_irq(&nacl->device_list_lock); | |
430 | return 0; | |
431 | } | |
432 | deve->creation_time = get_jiffies_64(); | |
433 | deve->attach_count++; | |
434 | spin_unlock_irq(&nacl->device_list_lock); | |
435 | ||
436 | spin_lock_bh(&port->sep_alua_lock); | |
437 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
438 | spin_unlock_bh(&port->sep_alua_lock); | |
439 | ||
440 | return 0; | |
441 | } | |
442 | /* | |
443 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
444 | * PR operation to complete. | |
445 | */ | |
446 | spin_unlock_irq(&nacl->device_list_lock); | |
447 | while (atomic_read(&deve->pr_ref_count) != 0) | |
448 | cpu_relax(); | |
449 | spin_lock_irq(&nacl->device_list_lock); | |
450 | /* | |
451 | * Disable struct se_dev_entry LUN ACL mapping | |
452 | */ | |
453 | core_scsi3_ua_release_all(deve); | |
454 | deve->se_lun = NULL; | |
455 | deve->se_lun_acl = NULL; | |
456 | deve->lun_flags = 0; | |
457 | deve->creation_time = 0; | |
458 | deve->attach_count--; | |
459 | spin_unlock_irq(&nacl->device_list_lock); | |
460 | ||
461 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
462 | return 0; | |
463 | } | |
464 | ||
465 | /* core_clear_lun_from_tpg(): | |
466 | * | |
467 | * | |
468 | */ | |
469 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
470 | { | |
471 | struct se_node_acl *nacl; | |
472 | struct se_dev_entry *deve; | |
473 | u32 i; | |
474 | ||
28638887 | 475 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 476 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
28638887 | 477 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
478 | |
479 | spin_lock_irq(&nacl->device_list_lock); | |
480 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
481 | deve = &nacl->device_list[i]; | |
482 | if (lun != deve->se_lun) | |
483 | continue; | |
484 | spin_unlock_irq(&nacl->device_list_lock); | |
485 | ||
486 | core_update_device_list_for_node(lun, NULL, | |
487 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, | |
488 | nacl, tpg, 0); | |
489 | ||
490 | spin_lock_irq(&nacl->device_list_lock); | |
491 | } | |
492 | spin_unlock_irq(&nacl->device_list_lock); | |
493 | ||
28638887 | 494 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 495 | } |
28638887 | 496 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
497 | } |
498 | ||
499 | static struct se_port *core_alloc_port(struct se_device *dev) | |
500 | { | |
501 | struct se_port *port, *port_tmp; | |
502 | ||
503 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
6708bb27 AG |
504 | if (!port) { |
505 | pr_err("Unable to allocate struct se_port\n"); | |
e3d6f909 | 506 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
507 | } |
508 | INIT_LIST_HEAD(&port->sep_alua_list); | |
509 | INIT_LIST_HEAD(&port->sep_list); | |
510 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
511 | spin_lock_init(&port->sep_alua_lock); | |
512 | mutex_init(&port->sep_tg_pt_md_mutex); | |
513 | ||
514 | spin_lock(&dev->se_port_lock); | |
515 | if (dev->dev_port_count == 0x0000ffff) { | |
6708bb27 | 516 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
517 | " 0x0000ffff\n"); |
518 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 519 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
520 | } |
521 | again: | |
522 | /* | |
523 | * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device | |
524 | * Here is the table from spc4r17 section 7.7.3.8. | |
525 | * | |
526 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
527 | * | |
528 | * Code Description | |
529 | * 0h Reserved | |
530 | * 1h Relative port 1, historically known as port A | |
531 | * 2h Relative port 2, historically known as port B | |
532 | * 3h to FFFFh Relative port 3 through 65 535 | |
533 | */ | |
534 | port->sep_rtpi = dev->dev_rpti_counter++; | |
6708bb27 | 535 | if (!port->sep_rtpi) |
c66ac9db NB |
536 | goto again; |
537 | ||
538 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
539 | /* | |
540 | * Make sure RELATIVE TARGET PORT IDENTIFER is unique | |
541 | * for 16-bit wrap.. | |
542 | */ | |
543 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
544 | goto again; | |
545 | } | |
546 | spin_unlock(&dev->se_port_lock); | |
547 | ||
548 | return port; | |
549 | } | |
550 | ||
551 | static void core_export_port( | |
552 | struct se_device *dev, | |
553 | struct se_portal_group *tpg, | |
554 | struct se_port *port, | |
555 | struct se_lun *lun) | |
556 | { | |
e3d6f909 | 557 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; |
c66ac9db NB |
558 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
559 | ||
560 | spin_lock(&dev->se_port_lock); | |
561 | spin_lock(&lun->lun_sep_lock); | |
562 | port->sep_tpg = tpg; | |
563 | port->sep_lun = lun; | |
564 | lun->lun_sep = port; | |
565 | spin_unlock(&lun->lun_sep_lock); | |
566 | ||
567 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
568 | spin_unlock(&dev->se_port_lock); | |
569 | ||
e3d6f909 | 570 | if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { |
c66ac9db NB |
571 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
572 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
6708bb27 | 573 | pr_err("Unable to allocate t10_alua_tg_pt" |
c66ac9db NB |
574 | "_gp_member_t\n"); |
575 | return; | |
576 | } | |
577 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
578 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
e3d6f909 | 579 | su_dev->t10_alua.default_tg_pt_gp); |
c66ac9db | 580 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
6708bb27 | 581 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
c66ac9db | 582 | " Group: alua/default_tg_pt_gp\n", |
e3d6f909 | 583 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
584 | } |
585 | ||
586 | dev->dev_port_count++; | |
587 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ | |
588 | } | |
589 | ||
590 | /* | |
591 | * Called with struct se_device->se_port_lock spinlock held. | |
592 | */ | |
593 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 594 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
595 | { |
596 | /* | |
597 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
598 | * to complete in __core_scsi3_alloc_registration() | |
599 | */ | |
600 | spin_unlock(&dev->se_port_lock); | |
601 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
602 | cpu_relax(); | |
603 | spin_lock(&dev->se_port_lock); | |
604 | ||
605 | core_alua_free_tg_pt_gp_mem(port); | |
606 | ||
607 | list_del(&port->sep_list); | |
608 | dev->dev_port_count--; | |
609 | kfree(port); | |
c66ac9db NB |
610 | } |
611 | ||
612 | int core_dev_export( | |
613 | struct se_device *dev, | |
614 | struct se_portal_group *tpg, | |
615 | struct se_lun *lun) | |
616 | { | |
617 | struct se_port *port; | |
618 | ||
619 | port = core_alloc_port(dev); | |
e3d6f909 AG |
620 | if (IS_ERR(port)) |
621 | return PTR_ERR(port); | |
c66ac9db NB |
622 | |
623 | lun->lun_se_dev = dev; | |
624 | se_dev_start(dev); | |
625 | ||
626 | atomic_inc(&dev->dev_export_obj.obj_access_count); | |
627 | core_export_port(dev, tpg, port, lun); | |
628 | return 0; | |
629 | } | |
630 | ||
631 | void core_dev_unexport( | |
632 | struct se_device *dev, | |
633 | struct se_portal_group *tpg, | |
634 | struct se_lun *lun) | |
635 | { | |
636 | struct se_port *port = lun->lun_sep; | |
637 | ||
638 | spin_lock(&lun->lun_sep_lock); | |
639 | if (lun->lun_se_dev == NULL) { | |
640 | spin_unlock(&lun->lun_sep_lock); | |
641 | return; | |
642 | } | |
643 | spin_unlock(&lun->lun_sep_lock); | |
644 | ||
645 | spin_lock(&dev->se_port_lock); | |
646 | atomic_dec(&dev->dev_export_obj.obj_access_count); | |
647 | core_release_port(dev, port); | |
648 | spin_unlock(&dev->se_port_lock); | |
649 | ||
650 | se_dev_stop(dev); | |
651 | lun->lun_se_dev = NULL; | |
652 | } | |
653 | ||
654 | int transport_core_report_lun_response(struct se_cmd *se_cmd) | |
655 | { | |
656 | struct se_dev_entry *deve; | |
657 | struct se_lun *se_lun; | |
e3d6f909 | 658 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 659 | struct se_task *se_task; |
05d1c7c0 | 660 | unsigned char *buf; |
1078da16 | 661 | u32 cdb_offset = 0, lun_count = 0, offset = 8, i; |
c66ac9db | 662 | |
a1d8b49a | 663 | list_for_each_entry(se_task, &se_cmd->t_task_list, t_list) |
c66ac9db NB |
664 | break; |
665 | ||
6708bb27 AG |
666 | if (!se_task) { |
667 | pr_err("Unable to locate struct se_task for struct se_cmd\n"); | |
c66ac9db NB |
668 | return PYX_TRANSPORT_LU_COMM_FAILURE; |
669 | } | |
670 | ||
05d1c7c0 AG |
671 | buf = transport_kmap_first_data_page(se_cmd); |
672 | ||
c66ac9db NB |
673 | /* |
674 | * If no struct se_session pointer is present, this struct se_cmd is | |
675 | * coming via a target_core_mod PASSTHROUGH op, and not through | |
676 | * a $FABRIC_MOD. In that case, report LUN=0 only. | |
677 | */ | |
6708bb27 | 678 | if (!se_sess) { |
1078da16 | 679 | int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); |
c66ac9db NB |
680 | lun_count = 1; |
681 | goto done; | |
682 | } | |
683 | ||
e3d6f909 | 684 | spin_lock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db | 685 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { |
e3d6f909 | 686 | deve = &se_sess->se_node_acl->device_list[i]; |
c66ac9db NB |
687 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) |
688 | continue; | |
689 | se_lun = deve->se_lun; | |
690 | /* | |
691 | * We determine the correct LUN LIST LENGTH even once we | |
692 | * have reached the initial allocation length. | |
693 | * See SPC2-R20 7.19. | |
694 | */ | |
695 | lun_count++; | |
696 | if ((cdb_offset + 8) >= se_cmd->data_length) | |
697 | continue; | |
698 | ||
1078da16 NB |
699 | int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); |
700 | offset += 8; | |
c66ac9db NB |
701 | cdb_offset += 8; |
702 | } | |
e3d6f909 | 703 | spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); |
c66ac9db NB |
704 | |
705 | /* | |
706 | * See SPC3 r07, page 159. | |
707 | */ | |
708 | done: | |
05d1c7c0 | 709 | transport_kunmap_first_data_page(se_cmd); |
c66ac9db NB |
710 | lun_count *= 8; |
711 | buf[0] = ((lun_count >> 24) & 0xff); | |
712 | buf[1] = ((lun_count >> 16) & 0xff); | |
713 | buf[2] = ((lun_count >> 8) & 0xff); | |
714 | buf[3] = (lun_count & 0xff); | |
715 | ||
716 | return PYX_TRANSPORT_SENT_TO_TRANSPORT; | |
717 | } | |
718 | ||
719 | /* se_release_device_for_hba(): | |
720 | * | |
721 | * | |
722 | */ | |
723 | void se_release_device_for_hba(struct se_device *dev) | |
724 | { | |
725 | struct se_hba *hba = dev->se_hba; | |
726 | ||
727 | if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || | |
728 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || | |
729 | (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || | |
730 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || | |
731 | (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) | |
732 | se_dev_stop(dev); | |
733 | ||
734 | if (dev->dev_ptr) { | |
735 | kthread_stop(dev->process_thread); | |
736 | if (dev->transport->free_device) | |
737 | dev->transport->free_device(dev->dev_ptr); | |
738 | } | |
739 | ||
740 | spin_lock(&hba->device_lock); | |
741 | list_del(&dev->dev_list); | |
742 | hba->dev_count--; | |
743 | spin_unlock(&hba->device_lock); | |
744 | ||
745 | core_scsi3_free_all_registrations(dev); | |
746 | se_release_vpd_for_dev(dev); | |
747 | ||
c66ac9db | 748 | kfree(dev); |
c66ac9db NB |
749 | } |
750 | ||
751 | void se_release_vpd_for_dev(struct se_device *dev) | |
752 | { | |
753 | struct t10_vpd *vpd, *vpd_tmp; | |
754 | ||
e3d6f909 | 755 | spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 756 | list_for_each_entry_safe(vpd, vpd_tmp, |
e3d6f909 | 757 | &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
758 | list_del(&vpd->vpd_list); |
759 | kfree(vpd); | |
760 | } | |
e3d6f909 | 761 | spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
762 | } |
763 | ||
c66ac9db NB |
764 | /* se_free_virtual_device(): |
765 | * | |
766 | * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. | |
767 | */ | |
768 | int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) | |
769 | { | |
05aea6e7 FC |
770 | if (!list_empty(&dev->dev_sep_list)) |
771 | dump_stack(); | |
c66ac9db NB |
772 | |
773 | core_alua_free_lu_gp_mem(dev); | |
774 | se_release_device_for_hba(dev); | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | static void se_dev_start(struct se_device *dev) | |
780 | { | |
781 | struct se_hba *hba = dev->se_hba; | |
782 | ||
783 | spin_lock(&hba->device_lock); | |
784 | atomic_inc(&dev->dev_obj.obj_access_count); | |
785 | if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { | |
786 | if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { | |
787 | dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; | |
788 | dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; | |
789 | } else if (dev->dev_status & | |
790 | TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { | |
791 | dev->dev_status &= | |
792 | ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
793 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
794 | } | |
795 | } | |
796 | spin_unlock(&hba->device_lock); | |
797 | } | |
798 | ||
799 | static void se_dev_stop(struct se_device *dev) | |
800 | { | |
801 | struct se_hba *hba = dev->se_hba; | |
802 | ||
803 | spin_lock(&hba->device_lock); | |
804 | atomic_dec(&dev->dev_obj.obj_access_count); | |
805 | if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { | |
806 | if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { | |
807 | dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; | |
808 | dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; | |
809 | } else if (dev->dev_status & | |
810 | TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { | |
811 | dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; | |
812 | dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; | |
813 | } | |
814 | } | |
815 | spin_unlock(&hba->device_lock); | |
c66ac9db NB |
816 | } |
817 | ||
818 | int se_dev_check_online(struct se_device *dev) | |
819 | { | |
56e34ee2 | 820 | unsigned long flags; |
c66ac9db NB |
821 | int ret; |
822 | ||
56e34ee2 | 823 | spin_lock_irqsave(&dev->dev_status_lock, flags); |
c66ac9db NB |
824 | ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || |
825 | (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; | |
56e34ee2 | 826 | spin_unlock_irqrestore(&dev->dev_status_lock, flags); |
c66ac9db NB |
827 | |
828 | return ret; | |
829 | } | |
830 | ||
831 | int se_dev_check_shutdown(struct se_device *dev) | |
832 | { | |
833 | int ret; | |
834 | ||
835 | spin_lock_irq(&dev->dev_status_lock); | |
836 | ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); | |
837 | spin_unlock_irq(&dev->dev_status_lock); | |
838 | ||
839 | return ret; | |
840 | } | |
841 | ||
525a48a2 NB |
842 | u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
843 | { | |
844 | u32 tmp, aligned_max_sectors; | |
845 | /* | |
846 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
847 | * transport_allocate_data_tasks() operation. | |
848 | */ | |
849 | tmp = rounddown((max_sectors * block_size), PAGE_SIZE); | |
850 | aligned_max_sectors = (tmp / block_size); | |
851 | if (max_sectors != aligned_max_sectors) { | |
852 | printk(KERN_INFO "Rounding down aligned max_sectors from %u" | |
853 | " to %u\n", max_sectors, aligned_max_sectors); | |
854 | return aligned_max_sectors; | |
855 | } | |
856 | ||
857 | return max_sectors; | |
858 | } | |
859 | ||
c66ac9db NB |
860 | void se_dev_set_default_attribs( |
861 | struct se_device *dev, | |
862 | struct se_dev_limits *dev_limits) | |
863 | { | |
864 | struct queue_limits *limits = &dev_limits->limits; | |
865 | ||
e3d6f909 AG |
866 | dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
867 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
868 | dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
869 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
870 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
871 | dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
872 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
873 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
874 | dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; | |
875 | dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; | |
876 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; | |
e22a7f07 | 877 | dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; |
5de619a3 | 878 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; |
c66ac9db NB |
879 | /* |
880 | * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK | |
881 | * iblock_create_virtdevice() from struct queue_limits values | |
882 | * if blk_queue_discard()==1 | |
883 | */ | |
e3d6f909 AG |
884 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; |
885 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = | |
886 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
887 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
888 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = | |
c66ac9db NB |
889 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; |
890 | /* | |
891 | * block_size is based on subsystem plugin dependent requirements. | |
892 | */ | |
e3d6f909 AG |
893 | dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; |
894 | dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size; | |
c66ac9db NB |
895 | /* |
896 | * max_sectors is based on subsystem plugin dependent requirements. | |
897 | */ | |
e3d6f909 | 898 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; |
525a48a2 NB |
899 | /* |
900 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
901 | */ | |
902 | limits->max_sectors = se_dev_align_max_sectors(limits->max_sectors, | |
903 | limits->logical_block_size); | |
e3d6f909 | 904 | dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; |
c66ac9db NB |
905 | /* |
906 | * Set optimal_sectors from max_sectors, which can be lowered via | |
907 | * configfs. | |
908 | */ | |
e3d6f909 | 909 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors; |
c66ac9db NB |
910 | /* |
911 | * queue_depth is based on subsystem plugin dependent requirements. | |
912 | */ | |
e3d6f909 AG |
913 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; |
914 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; | |
c66ac9db NB |
915 | } |
916 | ||
c66ac9db NB |
917 | int se_dev_set_max_unmap_lba_count( |
918 | struct se_device *dev, | |
919 | u32 max_unmap_lba_count) | |
920 | { | |
e3d6f909 | 921 | dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
6708bb27 | 922 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
e3d6f909 | 923 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
924 | return 0; |
925 | } | |
926 | ||
927 | int se_dev_set_max_unmap_block_desc_count( | |
928 | struct se_device *dev, | |
929 | u32 max_unmap_block_desc_count) | |
930 | { | |
e3d6f909 AG |
931 | dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = |
932 | max_unmap_block_desc_count; | |
6708bb27 | 933 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
e3d6f909 | 934 | dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
935 | return 0; |
936 | } | |
937 | ||
938 | int se_dev_set_unmap_granularity( | |
939 | struct se_device *dev, | |
940 | u32 unmap_granularity) | |
941 | { | |
e3d6f909 | 942 | dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; |
6708bb27 | 943 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
e3d6f909 | 944 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); |
c66ac9db NB |
945 | return 0; |
946 | } | |
947 | ||
948 | int se_dev_set_unmap_granularity_alignment( | |
949 | struct se_device *dev, | |
950 | u32 unmap_granularity_alignment) | |
951 | { | |
e3d6f909 | 952 | dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
6708bb27 | 953 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
e3d6f909 | 954 | dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
955 | return 0; |
956 | } | |
957 | ||
958 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) | |
959 | { | |
f55918fa | 960 | if (flag != 0 && flag != 1) { |
6708bb27 | 961 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 962 | return -EINVAL; |
c66ac9db | 963 | } |
f55918fa CH |
964 | |
965 | pr_err("dpo_emulated not supported\n"); | |
966 | return -EINVAL; | |
c66ac9db NB |
967 | } |
968 | ||
969 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
970 | { | |
f55918fa | 971 | if (flag != 0 && flag != 1) { |
6708bb27 | 972 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 973 | return -EINVAL; |
c66ac9db | 974 | } |
f55918fa CH |
975 | |
976 | if (dev->transport->fua_write_emulated == 0) { | |
977 | pr_err("fua_write_emulated not supported\n"); | |
e3d6f909 | 978 | return -EINVAL; |
c66ac9db | 979 | } |
e3d6f909 | 980 | dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; |
6708bb27 | 981 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
e3d6f909 | 982 | dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); |
c66ac9db NB |
983 | return 0; |
984 | } | |
985 | ||
986 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
987 | { | |
f55918fa | 988 | if (flag != 0 && flag != 1) { |
6708bb27 | 989 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 990 | return -EINVAL; |
c66ac9db | 991 | } |
f55918fa CH |
992 | |
993 | pr_err("ua read emulated not supported\n"); | |
994 | return -EINVAL; | |
c66ac9db NB |
995 | } |
996 | ||
997 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
998 | { | |
f55918fa | 999 | if (flag != 0 && flag != 1) { |
6708bb27 | 1000 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1001 | return -EINVAL; |
c66ac9db | 1002 | } |
f55918fa CH |
1003 | if (dev->transport->write_cache_emulated == 0) { |
1004 | pr_err("write_cache_emulated not supported\n"); | |
e3d6f909 | 1005 | return -EINVAL; |
c66ac9db | 1006 | } |
e3d6f909 | 1007 | dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; |
6708bb27 | 1008 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
e3d6f909 | 1009 | dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); |
c66ac9db NB |
1010 | return 0; |
1011 | } | |
1012 | ||
1013 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
1014 | { | |
1015 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
6708bb27 | 1016 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1017 | return -EINVAL; |
c66ac9db NB |
1018 | } |
1019 | ||
1020 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1021 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1022 | " UA_INTRLCK_CTRL while dev_export_obj: %d count" |
1023 | " exists\n", dev, | |
1024 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1025 | return -EINVAL; |
c66ac9db | 1026 | } |
e3d6f909 | 1027 | dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; |
6708bb27 | 1028 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
e3d6f909 | 1029 | dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
1030 | |
1031 | return 0; | |
1032 | } | |
1033 | ||
1034 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
1035 | { | |
1036 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1037 | pr_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)) { | |
6708bb27 | 1042 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
c66ac9db NB |
1043 | " dev_export_obj: %d count exists\n", dev, |
1044 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1045 | return -EINVAL; |
c66ac9db | 1046 | } |
e3d6f909 | 1047 | dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; |
6708bb27 | 1048 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
e3d6f909 | 1049 | dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1050 | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
1055 | { | |
1056 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1057 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1058 | return -EINVAL; |
c66ac9db NB |
1059 | } |
1060 | /* | |
1061 | * We expect this value to be non-zero when generic Block Layer | |
1062 | * Discard supported is detected iblock_create_virtdevice(). | |
1063 | */ | |
6708bb27 AG |
1064 | if (!dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
1065 | pr_err("Generic Block Discard not supported\n"); | |
c66ac9db NB |
1066 | return -ENOSYS; |
1067 | } | |
1068 | ||
e3d6f909 | 1069 | dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; |
6708bb27 | 1070 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
c66ac9db NB |
1071 | dev, flag); |
1072 | return 0; | |
1073 | } | |
1074 | ||
1075 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
1076 | { | |
1077 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1078 | pr_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 | */ | |
6708bb27 AG |
1085 | if (!dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { |
1086 | pr_err("Generic Block Discard not supported\n"); | |
c66ac9db NB |
1087 | return -ENOSYS; |
1088 | } | |
1089 | ||
e3d6f909 | 1090 | dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; |
6708bb27 | 1091 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
c66ac9db NB |
1092 | dev, flag); |
1093 | return 0; | |
1094 | } | |
1095 | ||
1096 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) | |
1097 | { | |
1098 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 1099 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 1100 | return -EINVAL; |
c66ac9db | 1101 | } |
e3d6f909 | 1102 | dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; |
6708bb27 | 1103 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
e3d6f909 | 1104 | (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
1105 | return 0; |
1106 | } | |
1107 | ||
e22a7f07 RD |
1108 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
1109 | { | |
1110 | if ((flag != 0) && (flag != 1)) { | |
1111 | printk(KERN_ERR "Illegal value %d\n", flag); | |
1112 | return -EINVAL; | |
1113 | } | |
1114 | dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; | |
5de619a3 | 1115 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
e22a7f07 RD |
1116 | dev, flag); |
1117 | return 0; | |
1118 | } | |
1119 | ||
5de619a3 NB |
1120 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
1121 | { | |
1122 | if (flag != 0) { | |
1123 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" | |
1124 | " reordering not implemented\n", dev); | |
1125 | return -ENOSYS; | |
1126 | } | |
1127 | dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; | |
1128 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); | |
1129 | return 0; | |
1130 | } | |
1131 | ||
c66ac9db NB |
1132 | /* |
1133 | * Note, this can only be called on unexported SE Device Object. | |
1134 | */ | |
1135 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
1136 | { | |
1137 | u32 orig_queue_depth = dev->queue_depth; | |
1138 | ||
1139 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1140 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
c66ac9db NB |
1141 | " dev_export_obj: %d count exists\n", dev, |
1142 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1143 | return -EINVAL; |
c66ac9db | 1144 | } |
6708bb27 AG |
1145 | if (!queue_depth) { |
1146 | pr_err("dev[%p]: Illegal ZERO value for queue" | |
c66ac9db | 1147 | "_depth\n", dev); |
e3d6f909 | 1148 | return -EINVAL; |
c66ac9db NB |
1149 | } |
1150 | ||
e3d6f909 AG |
1151 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
1152 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { | |
6708bb27 | 1153 | pr_err("dev[%p]: Passed queue_depth: %u" |
c66ac9db NB |
1154 | " exceeds TCM/SE_Device TCQ: %u\n", |
1155 | dev, queue_depth, | |
e3d6f909 AG |
1156 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
1157 | return -EINVAL; | |
c66ac9db NB |
1158 | } |
1159 | } else { | |
e3d6f909 AG |
1160 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { |
1161 | if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { | |
6708bb27 | 1162 | pr_err("dev[%p]: Passed queue_depth:" |
c66ac9db NB |
1163 | " %u exceeds TCM/SE_Device MAX" |
1164 | " TCQ: %u\n", dev, queue_depth, | |
e3d6f909 AG |
1165 | dev->se_sub_dev->se_dev_attrib.hw_queue_depth); |
1166 | return -EINVAL; | |
c66ac9db NB |
1167 | } |
1168 | } | |
1169 | } | |
1170 | ||
e3d6f909 | 1171 | dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
c66ac9db NB |
1172 | if (queue_depth > orig_queue_depth) |
1173 | atomic_add(queue_depth - orig_queue_depth, &dev->depth_left); | |
1174 | else if (queue_depth < orig_queue_depth) | |
1175 | atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left); | |
1176 | ||
6708bb27 | 1177 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
c66ac9db NB |
1178 | dev, queue_depth); |
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) | |
1183 | { | |
1184 | int force = 0; /* Force setting for VDEVS */ | |
1185 | ||
1186 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1187 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1188 | " max_sectors while dev_export_obj: %d count exists\n", |
1189 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1190 | return -EINVAL; |
c66ac9db | 1191 | } |
6708bb27 AG |
1192 | if (!max_sectors) { |
1193 | pr_err("dev[%p]: Illegal ZERO value for" | |
c66ac9db | 1194 | " max_sectors\n", dev); |
e3d6f909 | 1195 | return -EINVAL; |
c66ac9db NB |
1196 | } |
1197 | if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
6708bb27 | 1198 | pr_err("dev[%p]: Passed max_sectors: %u less than" |
c66ac9db NB |
1199 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, |
1200 | DA_STATUS_MAX_SECTORS_MIN); | |
e3d6f909 | 1201 | return -EINVAL; |
c66ac9db | 1202 | } |
e3d6f909 AG |
1203 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
1204 | if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { | |
6708bb27 | 1205 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1206 | " greater than TCM/SE_Device max_sectors:" |
1207 | " %u\n", dev, max_sectors, | |
e3d6f909 AG |
1208 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1209 | return -EINVAL; | |
c66ac9db NB |
1210 | } |
1211 | } else { | |
6708bb27 | 1212 | if (!force && (max_sectors > |
e3d6f909 | 1213 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { |
6708bb27 | 1214 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1215 | " greater than TCM/SE_Device max_sectors" |
1216 | ": %u, use force=1 to override.\n", dev, | |
e3d6f909 AG |
1217 | max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); |
1218 | return -EINVAL; | |
c66ac9db NB |
1219 | } |
1220 | if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
6708bb27 | 1221 | pr_err("dev[%p]: Passed max_sectors: %u" |
c66ac9db NB |
1222 | " greater than DA_STATUS_MAX_SECTORS_MAX:" |
1223 | " %u\n", dev, max_sectors, | |
1224 | DA_STATUS_MAX_SECTORS_MAX); | |
e3d6f909 | 1225 | return -EINVAL; |
c66ac9db NB |
1226 | } |
1227 | } | |
525a48a2 NB |
1228 | /* |
1229 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
1230 | */ | |
1231 | max_sectors = se_dev_align_max_sectors(max_sectors, | |
1232 | dev->se_sub_dev->se_dev_attrib.block_size); | |
c66ac9db | 1233 | |
e3d6f909 | 1234 | dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; |
6708bb27 | 1235 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
c66ac9db NB |
1236 | dev, max_sectors); |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) | |
1241 | { | |
1242 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1243 | pr_err("dev[%p]: Unable to change SE Device" |
c66ac9db NB |
1244 | " optimal_sectors while dev_export_obj: %d count exists\n", |
1245 | dev, atomic_read(&dev->dev_export_obj.obj_access_count)); | |
1246 | return -EINVAL; | |
1247 | } | |
e3d6f909 | 1248 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1249 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
c66ac9db NB |
1250 | " changed for TCM/pSCSI\n", dev); |
1251 | return -EINVAL; | |
1252 | } | |
e3d6f909 | 1253 | if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) { |
6708bb27 | 1254 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
c66ac9db | 1255 | " greater than max_sectors: %u\n", dev, |
e3d6f909 | 1256 | optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors); |
c66ac9db NB |
1257 | return -EINVAL; |
1258 | } | |
1259 | ||
e3d6f909 | 1260 | dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; |
6708bb27 | 1261 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
c66ac9db NB |
1262 | dev, optimal_sectors); |
1263 | return 0; | |
1264 | } | |
1265 | ||
1266 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1267 | { | |
1268 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1269 | pr_err("dev[%p]: Unable to change SE Device block_size" |
c66ac9db NB |
1270 | " while dev_export_obj: %d count exists\n", dev, |
1271 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
e3d6f909 | 1272 | return -EINVAL; |
c66ac9db NB |
1273 | } |
1274 | ||
1275 | if ((block_size != 512) && | |
1276 | (block_size != 1024) && | |
1277 | (block_size != 2048) && | |
1278 | (block_size != 4096)) { | |
6708bb27 | 1279 | pr_err("dev[%p]: Illegal value for block_device: %u" |
c66ac9db NB |
1280 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
1281 | dev, block_size); | |
e3d6f909 | 1282 | return -EINVAL; |
c66ac9db NB |
1283 | } |
1284 | ||
e3d6f909 | 1285 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1286 | pr_err("dev[%p]: Not allowed to change block_size for" |
c66ac9db NB |
1287 | " Physical Device, use for Linux/SCSI to change" |
1288 | " block_size for underlying hardware\n", dev); | |
e3d6f909 | 1289 | return -EINVAL; |
c66ac9db NB |
1290 | } |
1291 | ||
e3d6f909 | 1292 | dev->se_sub_dev->se_dev_attrib.block_size = block_size; |
6708bb27 | 1293 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
c66ac9db NB |
1294 | dev, block_size); |
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | struct se_lun *core_dev_add_lun( | |
1299 | struct se_portal_group *tpg, | |
1300 | struct se_hba *hba, | |
1301 | struct se_device *dev, | |
1302 | u32 lun) | |
1303 | { | |
1304 | struct se_lun *lun_p; | |
1305 | u32 lun_access = 0; | |
1306 | ||
1307 | if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { | |
6708bb27 | 1308 | pr_err("Unable to export struct se_device while dev_access_obj: %d\n", |
c66ac9db NB |
1309 | atomic_read(&dev->dev_access_obj.obj_access_count)); |
1310 | return NULL; | |
1311 | } | |
1312 | ||
1313 | lun_p = core_tpg_pre_addlun(tpg, lun); | |
6708bb27 | 1314 | if ((IS_ERR(lun_p)) || !lun_p) |
c66ac9db NB |
1315 | return NULL; |
1316 | ||
1317 | if (dev->dev_flags & DF_READ_ONLY) | |
1318 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1319 | else | |
1320 | lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; | |
1321 | ||
1322 | if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0) | |
1323 | return NULL; | |
1324 | ||
6708bb27 | 1325 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 AG |
1326 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1327 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, | |
1328 | tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); | |
c66ac9db NB |
1329 | /* |
1330 | * Update LUN maps for dynamically added initiators when | |
1331 | * generate_node_acl is enabled. | |
1332 | */ | |
e3d6f909 | 1333 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 1334 | struct se_node_acl *acl; |
28638887 | 1335 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 1336 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
1337 | if (acl->dynamic_node_acl && |
1338 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
1339 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
28638887 | 1340 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db | 1341 | core_tpg_add_node_to_devs(acl, tpg); |
28638887 | 1342 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1343 | } |
1344 | } | |
28638887 | 1345 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1346 | } |
1347 | ||
1348 | return lun_p; | |
1349 | } | |
1350 | ||
1351 | /* core_dev_del_lun(): | |
1352 | * | |
1353 | * | |
1354 | */ | |
1355 | int core_dev_del_lun( | |
1356 | struct se_portal_group *tpg, | |
1357 | u32 unpacked_lun) | |
1358 | { | |
1359 | struct se_lun *lun; | |
1360 | int ret = 0; | |
1361 | ||
1362 | lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret); | |
6708bb27 | 1363 | if (!lun) |
c66ac9db NB |
1364 | return ret; |
1365 | ||
1366 | core_tpg_post_dellun(tpg, lun); | |
1367 | ||
6708bb27 | 1368 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
e3d6f909 AG |
1369 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
1370 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, | |
1371 | tpg->se_tpg_tfo->get_fabric_name()); | |
c66ac9db NB |
1372 | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1377 | { | |
1378 | struct se_lun *lun; | |
1379 | ||
1380 | spin_lock(&tpg->tpg_lun_lock); | |
1381 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1382 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
c66ac9db | 1383 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1384 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1385 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1386 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1387 | spin_unlock(&tpg->tpg_lun_lock); |
1388 | return NULL; | |
1389 | } | |
1390 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1391 | ||
1392 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
6708bb27 | 1393 | pr_err("%s Logical Unit Number: %u is not free on" |
c66ac9db | 1394 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1395 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1396 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1397 | spin_unlock(&tpg->tpg_lun_lock); |
1398 | return NULL; | |
1399 | } | |
1400 | spin_unlock(&tpg->tpg_lun_lock); | |
1401 | ||
1402 | return lun; | |
1403 | } | |
1404 | ||
1405 | /* core_dev_get_lun(): | |
1406 | * | |
1407 | * | |
1408 | */ | |
1409 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1410 | { | |
1411 | struct se_lun *lun; | |
1412 | ||
1413 | spin_lock(&tpg->tpg_lun_lock); | |
1414 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1415 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
c66ac9db | 1416 | "_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1417 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1418 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1419 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1420 | spin_unlock(&tpg->tpg_lun_lock); |
1421 | return NULL; | |
1422 | } | |
1423 | lun = &tpg->tpg_lun_list[unpacked_lun]; | |
1424 | ||
1425 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
6708bb27 | 1426 | pr_err("%s Logical Unit Number: %u is not active on" |
c66ac9db | 1427 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1428 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1429 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1430 | spin_unlock(&tpg->tpg_lun_lock); |
1431 | return NULL; | |
1432 | } | |
1433 | spin_unlock(&tpg->tpg_lun_lock); | |
1434 | ||
1435 | return lun; | |
1436 | } | |
1437 | ||
1438 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1439 | struct se_portal_group *tpg, | |
1440 | u32 mapped_lun, | |
1441 | char *initiatorname, | |
1442 | int *ret) | |
1443 | { | |
1444 | struct se_lun_acl *lacl; | |
1445 | struct se_node_acl *nacl; | |
1446 | ||
60d645a4 | 1447 | if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 1448 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1449 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1450 | *ret = -EOVERFLOW; |
1451 | return NULL; | |
1452 | } | |
1453 | nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); | |
6708bb27 | 1454 | if (!nacl) { |
c66ac9db NB |
1455 | *ret = -EINVAL; |
1456 | return NULL; | |
1457 | } | |
1458 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); | |
6708bb27 AG |
1459 | if (!lacl) { |
1460 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
1461 | *ret = -ENOMEM; |
1462 | return NULL; | |
1463 | } | |
1464 | ||
1465 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1466 | lacl->mapped_lun = mapped_lun; | |
1467 | lacl->se_lun_nacl = nacl; | |
1468 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); | |
1469 | ||
1470 | return lacl; | |
1471 | } | |
1472 | ||
1473 | int core_dev_add_initiator_node_lun_acl( | |
1474 | struct se_portal_group *tpg, | |
1475 | struct se_lun_acl *lacl, | |
1476 | u32 unpacked_lun, | |
1477 | u32 lun_access) | |
1478 | { | |
1479 | struct se_lun *lun; | |
1480 | struct se_node_acl *nacl; | |
1481 | ||
1482 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
6708bb27 AG |
1483 | if (!lun) { |
1484 | pr_err("%s Logical Unit Number: %u is not active on" | |
c66ac9db | 1485 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1486 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1487 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1488 | return -EINVAL; |
1489 | } | |
1490 | ||
1491 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1492 | if (!nacl) |
c66ac9db NB |
1493 | return -EINVAL; |
1494 | ||
1495 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1496 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1497 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1498 | ||
1499 | lacl->se_lun = lun; | |
1500 | ||
1501 | if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, | |
1502 | lun_access, nacl, tpg, 1) < 0) | |
1503 | return -EINVAL; | |
1504 | ||
1505 | spin_lock(&lun->lun_acl_lock); | |
1506 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
1507 | atomic_inc(&lun->lun_acl_count); | |
1508 | smp_mb__after_atomic_inc(); | |
1509 | spin_unlock(&lun->lun_acl_lock); | |
1510 | ||
6708bb27 | 1511 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 AG |
1512 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1513 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1514 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1515 | lacl->initiatorname); | |
1516 | /* | |
1517 | * Check to see if there are any existing persistent reservation APTPL | |
1518 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1519 | */ | |
1520 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | /* core_dev_del_initiator_node_lun_acl(): | |
1525 | * | |
1526 | * | |
1527 | */ | |
1528 | int core_dev_del_initiator_node_lun_acl( | |
1529 | struct se_portal_group *tpg, | |
1530 | struct se_lun *lun, | |
1531 | struct se_lun_acl *lacl) | |
1532 | { | |
1533 | struct se_node_acl *nacl; | |
1534 | ||
1535 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1536 | if (!nacl) |
c66ac9db NB |
1537 | return -EINVAL; |
1538 | ||
1539 | spin_lock(&lun->lun_acl_lock); | |
1540 | list_del(&lacl->lacl_list); | |
1541 | atomic_dec(&lun->lun_acl_count); | |
1542 | smp_mb__after_atomic_dec(); | |
1543 | spin_unlock(&lun->lun_acl_lock); | |
1544 | ||
1545 | core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, | |
1546 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); | |
1547 | ||
1548 | lacl->se_lun = NULL; | |
1549 | ||
6708bb27 | 1550 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 1551 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
1552 | tpg->se_tpg_tfo->get_fabric_name(), |
1553 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1554 | lacl->initiatorname, lacl->mapped_lun); |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | void core_dev_free_initiator_node_lun_acl( | |
1560 | struct se_portal_group *tpg, | |
1561 | struct se_lun_acl *lacl) | |
1562 | { | |
6708bb27 | 1563 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
1564 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1565 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1566 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1567 | lacl->initiatorname, lacl->mapped_lun); |
1568 | ||
1569 | kfree(lacl); | |
1570 | } | |
1571 | ||
1572 | int core_dev_setup_virtual_lun0(void) | |
1573 | { | |
1574 | struct se_hba *hba; | |
1575 | struct se_device *dev; | |
1576 | struct se_subsystem_dev *se_dev = NULL; | |
1577 | struct se_subsystem_api *t; | |
1578 | char buf[16]; | |
1579 | int ret; | |
1580 | ||
6708bb27 | 1581 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
1582 | if (IS_ERR(hba)) |
1583 | return PTR_ERR(hba); | |
1584 | ||
e3d6f909 | 1585 | lun0_hba = hba; |
c66ac9db NB |
1586 | t = hba->transport; |
1587 | ||
1588 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
6708bb27 AG |
1589 | if (!se_dev) { |
1590 | pr_err("Unable to allocate memory for" | |
c66ac9db NB |
1591 | " struct se_subsystem_dev\n"); |
1592 | ret = -ENOMEM; | |
1593 | goto out; | |
1594 | } | |
e3d6f909 | 1595 | INIT_LIST_HEAD(&se_dev->se_dev_node); |
c66ac9db NB |
1596 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
1597 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
1598 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
1599 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
1600 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
1601 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
1602 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
1603 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
1604 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 1605 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
1606 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
1607 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
1608 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
1609 | se_dev->se_dev_hba = hba; | |
1610 | ||
1611 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); | |
6708bb27 AG |
1612 | if (!se_dev->se_dev_su_ptr) { |
1613 | pr_err("Unable to locate subsystem dependent pointer" | |
c66ac9db NB |
1614 | " from allocate_virtdevice()\n"); |
1615 | ret = -ENOMEM; | |
1616 | goto out; | |
1617 | } | |
e3d6f909 | 1618 | lun0_su_dev = se_dev; |
c66ac9db NB |
1619 | |
1620 | memset(buf, 0, 16); | |
1621 | sprintf(buf, "rd_pages=8"); | |
1622 | t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); | |
1623 | ||
1624 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
e3d6f909 AG |
1625 | if (IS_ERR(dev)) { |
1626 | ret = PTR_ERR(dev); | |
c66ac9db NB |
1627 | goto out; |
1628 | } | |
1629 | se_dev->se_dev_ptr = dev; | |
e3d6f909 | 1630 | g_lun0_dev = dev; |
c66ac9db NB |
1631 | |
1632 | return 0; | |
1633 | out: | |
e3d6f909 | 1634 | lun0_su_dev = NULL; |
c66ac9db | 1635 | kfree(se_dev); |
e3d6f909 AG |
1636 | if (lun0_hba) { |
1637 | core_delete_hba(lun0_hba); | |
1638 | lun0_hba = NULL; | |
c66ac9db NB |
1639 | } |
1640 | return ret; | |
1641 | } | |
1642 | ||
1643 | ||
1644 | void core_dev_release_virtual_lun0(void) | |
1645 | { | |
e3d6f909 AG |
1646 | struct se_hba *hba = lun0_hba; |
1647 | struct se_subsystem_dev *su_dev = lun0_su_dev; | |
c66ac9db | 1648 | |
6708bb27 | 1649 | if (!hba) |
c66ac9db NB |
1650 | return; |
1651 | ||
e3d6f909 AG |
1652 | if (g_lun0_dev) |
1653 | se_free_virtual_device(g_lun0_dev, hba); | |
c66ac9db NB |
1654 | |
1655 | kfree(su_dev); | |
1656 | core_delete_hba(hba); | |
1657 | } |