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Commit | Line | Data |
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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_device.c (based on iscsi_target_device.c) | |
3 | * | |
e3d6f909 | 4 | * This file contains the TCM Virtual Device and Disk Transport |
c66ac9db NB |
5 | * agnostic related functions. |
6 | * | |
4c76251e | 7 | * (c) Copyright 2003-2013 Datera, Inc. |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
24 | * | |
25 | ******************************************************************************/ | |
26 | ||
27 | #include <linux/net.h> | |
28 | #include <linux/string.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/timer.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/spinlock.h> | |
c66ac9db NB |
33 | #include <linux/kthread.h> |
34 | #include <linux/in.h> | |
c53181af | 35 | #include <linux/export.h> |
c66ac9db NB |
36 | #include <net/sock.h> |
37 | #include <net/tcp.h> | |
38 | #include <scsi/scsi.h> | |
1078da16 | 39 | #include <scsi/scsi_device.h> |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
c4795fb2 CH |
42 | #include <target/target_core_backend.h> |
43 | #include <target/target_core_fabric.h> | |
c66ac9db | 44 | |
e26d99ae | 45 | #include "target_core_internal.h" |
c66ac9db | 46 | #include "target_core_alua.h" |
c66ac9db NB |
47 | #include "target_core_pr.h" |
48 | #include "target_core_ua.h" | |
49 | ||
d9ea32bf NB |
50 | DEFINE_MUTEX(g_device_mutex); |
51 | LIST_HEAD(g_device_list); | |
52 | ||
e3d6f909 | 53 | static struct se_hba *lun0_hba; |
e3d6f909 AG |
54 | /* not static, needed by tpg.c */ |
55 | struct se_device *g_lun0_dev; | |
56 | ||
de103c93 CH |
57 | sense_reason_t |
58 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) | |
c66ac9db | 59 | { |
c66ac9db | 60 | struct se_lun *se_lun = NULL; |
e3d6f909 | 61 | struct se_session *se_sess = se_cmd->se_sess; |
5951146d | 62 | struct se_device *dev; |
c66ac9db | 63 | unsigned long flags; |
c66ac9db | 64 | |
de103c93 CH |
65 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
66 | return TCM_NON_EXISTENT_LUN; | |
d8144955 | 67 | |
78faae37 | 68 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 69 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
70 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
71 | struct se_dev_entry *deve = se_cmd->se_deve; | |
72 | ||
73 | deve->total_cmds++; | |
5951146d AG |
74 | |
75 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
76 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
6708bb27 | 77 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
5951146d AG |
78 | " Access for 0x%08x\n", |
79 | se_cmd->se_tfo->get_fabric_name(), | |
80 | unpacked_lun); | |
78faae37 | 81 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
de103c93 | 82 | return TCM_WRITE_PROTECTED; |
c66ac9db | 83 | } |
5951146d AG |
84 | |
85 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
86 | deve->write_bytes += se_cmd->data_length; | |
87 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
88 | deve->read_bytes += se_cmd->data_length; | |
89 | ||
5951146d AG |
90 | se_lun = deve->se_lun; |
91 | se_cmd->se_lun = deve->se_lun; | |
c66ac9db NB |
92 | se_cmd->pr_res_key = deve->pr_res_key; |
93 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db NB |
94 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
95 | } | |
78faae37 | 96 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
97 | |
98 | if (!se_lun) { | |
5951146d AG |
99 | /* |
100 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
101 | * REPORT_LUNS, et al to be returned when no active | |
102 | * MappedLUN=0 exists for this Initiator Port. | |
103 | */ | |
104 | if (unpacked_lun != 0) { | |
6708bb27 | 105 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 106 | " Access for 0x%08x\n", |
e3d6f909 | 107 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 108 | unpacked_lun); |
de103c93 | 109 | return TCM_NON_EXISTENT_LUN; |
5951146d AG |
110 | } |
111 | /* | |
112 | * Force WRITE PROTECT for virtual LUN 0 | |
113 | */ | |
114 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
de103c93 CH |
115 | (se_cmd->data_direction != DMA_NONE)) |
116 | return TCM_WRITE_PROTECTED; | |
5951146d AG |
117 | |
118 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
119 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
120 | se_cmd->orig_fe_lun = 0; | |
5951146d | 121 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
c66ac9db | 122 | } |
c66ac9db | 123 | |
5951146d AG |
124 | /* Directly associate cmd with se_dev */ |
125 | se_cmd->se_dev = se_lun->lun_se_dev; | |
126 | ||
127 | /* TODO: get rid of this and use atomics for stats */ | |
128 | dev = se_lun->lun_se_dev; | |
78faae37 | 129 | spin_lock_irqsave(&dev->stats_lock, flags); |
c66ac9db NB |
130 | dev->num_cmds++; |
131 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
132 | dev->write_bytes += se_cmd->data_length; | |
133 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
134 | dev->read_bytes += se_cmd->data_length; | |
78faae37 | 135 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
c66ac9db | 136 | |
c66ac9db | 137 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
5951146d | 138 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
c66ac9db NB |
139 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
140 | ||
141 | return 0; | |
142 | } | |
5951146d | 143 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 144 | |
5951146d | 145 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 146 | { |
c66ac9db NB |
147 | struct se_dev_entry *deve; |
148 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 149 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 150 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 151 | unsigned long flags; |
c66ac9db | 152 | |
de103c93 | 153 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
e3d6f909 | 154 | return -ENODEV; |
d8144955 | 155 | |
5e1be919 | 156 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 157 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
158 | deve = se_cmd->se_deve; |
159 | ||
c66ac9db | 160 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
5951146d AG |
161 | se_tmr->tmr_lun = deve->se_lun; |
162 | se_cmd->se_lun = deve->se_lun; | |
163 | se_lun = deve->se_lun; | |
c66ac9db NB |
164 | se_cmd->pr_res_key = deve->pr_res_key; |
165 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 166 | } |
5e1be919 | 167 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
168 | |
169 | if (!se_lun) { | |
6708bb27 | 170 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 171 | " Access for 0x%08x\n", |
e3d6f909 | 172 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 173 | unpacked_lun); |
e3d6f909 | 174 | return -ENODEV; |
c66ac9db | 175 | } |
c66ac9db | 176 | |
5951146d AG |
177 | /* Directly associate cmd with se_dev */ |
178 | se_cmd->se_dev = se_lun->lun_se_dev; | |
179 | se_tmr->tmr_dev = se_lun->lun_se_dev; | |
180 | ||
5e1be919 | 181 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 182 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 183 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
184 | |
185 | return 0; | |
186 | } | |
5951146d | 187 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db NB |
188 | |
189 | /* | |
190 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
191 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
192 | * when a matching rtpi is found. | |
193 | */ | |
194 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
195 | struct se_node_acl *nacl, | |
196 | u16 rtpi) | |
197 | { | |
198 | struct se_dev_entry *deve; | |
199 | struct se_lun *lun; | |
200 | struct se_port *port; | |
201 | struct se_portal_group *tpg = nacl->se_tpg; | |
202 | u32 i; | |
203 | ||
204 | spin_lock_irq(&nacl->device_list_lock); | |
205 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 206 | deve = nacl->device_list[i]; |
c66ac9db NB |
207 | |
208 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
209 | continue; | |
210 | ||
211 | lun = deve->se_lun; | |
6708bb27 AG |
212 | if (!lun) { |
213 | pr_err("%s device entries device pointer is" | |
c66ac9db | 214 | " NULL, but Initiator has access.\n", |
e3d6f909 | 215 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
216 | continue; |
217 | } | |
218 | port = lun->lun_sep; | |
6708bb27 AG |
219 | if (!port) { |
220 | pr_err("%s device entries device pointer is" | |
c66ac9db | 221 | " NULL, but Initiator has access.\n", |
e3d6f909 | 222 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
223 | continue; |
224 | } | |
225 | if (port->sep_rtpi != rtpi) | |
226 | continue; | |
227 | ||
228 | atomic_inc(&deve->pr_ref_count); | |
229 | smp_mb__after_atomic_inc(); | |
230 | spin_unlock_irq(&nacl->device_list_lock); | |
231 | ||
232 | return deve; | |
233 | } | |
234 | spin_unlock_irq(&nacl->device_list_lock); | |
235 | ||
236 | return NULL; | |
237 | } | |
238 | ||
239 | int core_free_device_list_for_node( | |
240 | struct se_node_acl *nacl, | |
241 | struct se_portal_group *tpg) | |
242 | { | |
243 | struct se_dev_entry *deve; | |
244 | struct se_lun *lun; | |
245 | u32 i; | |
246 | ||
247 | if (!nacl->device_list) | |
248 | return 0; | |
249 | ||
250 | spin_lock_irq(&nacl->device_list_lock); | |
251 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 252 | deve = nacl->device_list[i]; |
c66ac9db NB |
253 | |
254 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
255 | continue; | |
256 | ||
257 | if (!deve->se_lun) { | |
6708bb27 | 258 | pr_err("%s device entries device pointer is" |
c66ac9db | 259 | " NULL, but Initiator has access.\n", |
e3d6f909 | 260 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
261 | continue; |
262 | } | |
263 | lun = deve->se_lun; | |
264 | ||
265 | spin_unlock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
266 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
267 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
268 | spin_lock_irq(&nacl->device_list_lock); |
269 | } | |
270 | spin_unlock_irq(&nacl->device_list_lock); | |
271 | ||
f2083241 | 272 | array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); |
c66ac9db NB |
273 | nacl->device_list = NULL; |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
c66ac9db NB |
278 | void core_update_device_list_access( |
279 | u32 mapped_lun, | |
280 | u32 lun_access, | |
281 | struct se_node_acl *nacl) | |
282 | { | |
283 | struct se_dev_entry *deve; | |
284 | ||
285 | spin_lock_irq(&nacl->device_list_lock); | |
f2083241 | 286 | deve = nacl->device_list[mapped_lun]; |
c66ac9db NB |
287 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
288 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
289 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
290 | } else { | |
291 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
292 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
293 | } | |
294 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
295 | } |
296 | ||
e80ac6c4 | 297 | /* core_enable_device_list_for_node(): |
c66ac9db NB |
298 | * |
299 | * | |
300 | */ | |
e80ac6c4 | 301 | int core_enable_device_list_for_node( |
c66ac9db NB |
302 | struct se_lun *lun, |
303 | struct se_lun_acl *lun_acl, | |
304 | u32 mapped_lun, | |
305 | u32 lun_access, | |
306 | struct se_node_acl *nacl, | |
e80ac6c4 | 307 | struct se_portal_group *tpg) |
c66ac9db NB |
308 | { |
309 | struct se_port *port = lun->lun_sep; | |
e80ac6c4 | 310 | struct se_dev_entry *deve; |
c66ac9db NB |
311 | |
312 | spin_lock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
313 | |
314 | deve = nacl->device_list[mapped_lun]; | |
315 | ||
316 | /* | |
317 | * Check if the call is handling demo mode -> explict LUN ACL | |
318 | * transition. This transition must be for the same struct se_lun | |
319 | * + mapped_lun that was setup in demo mode.. | |
320 | */ | |
321 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
322 | if (deve->se_lun_acl != NULL) { | |
323 | pr_err("struct se_dev_entry->se_lun_acl" | |
324 | " already set for demo mode -> explict" | |
325 | " LUN ACL transition\n"); | |
326 | spin_unlock_irq(&nacl->device_list_lock); | |
327 | return -EINVAL; | |
328 | } | |
329 | if (deve->se_lun != lun) { | |
330 | pr_err("struct se_dev_entry->se_lun does" | |
331 | " match passed struct se_lun for demo mode" | |
332 | " -> explict LUN ACL transition\n"); | |
333 | spin_unlock_irq(&nacl->device_list_lock); | |
334 | return -EINVAL; | |
c66ac9db | 335 | } |
e80ac6c4 | 336 | deve->se_lun_acl = lun_acl; |
c66ac9db NB |
337 | |
338 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
339 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
340 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
341 | } else { | |
342 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
343 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
344 | } | |
345 | ||
c66ac9db | 346 | spin_unlock_irq(&nacl->device_list_lock); |
e80ac6c4 AG |
347 | return 0; |
348 | } | |
c66ac9db | 349 | |
e80ac6c4 AG |
350 | deve->se_lun = lun; |
351 | deve->se_lun_acl = lun_acl; | |
352 | deve->mapped_lun = mapped_lun; | |
353 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
c66ac9db | 354 | |
e80ac6c4 AG |
355 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
356 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
357 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
358 | } else { | |
359 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
360 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
c66ac9db | 361 | } |
e80ac6c4 AG |
362 | |
363 | deve->creation_time = get_jiffies_64(); | |
364 | deve->attach_count++; | |
365 | spin_unlock_irq(&nacl->device_list_lock); | |
366 | ||
367 | spin_lock_bh(&port->sep_alua_lock); | |
368 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
369 | spin_unlock_bh(&port->sep_alua_lock); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | /* core_disable_device_list_for_node(): | |
375 | * | |
376 | * | |
377 | */ | |
378 | int core_disable_device_list_for_node( | |
379 | struct se_lun *lun, | |
380 | struct se_lun_acl *lun_acl, | |
381 | u32 mapped_lun, | |
382 | u32 lun_access, | |
383 | struct se_node_acl *nacl, | |
384 | struct se_portal_group *tpg) | |
385 | { | |
386 | struct se_port *port = lun->lun_sep; | |
77d4c745 | 387 | struct se_dev_entry *deve = nacl->device_list[mapped_lun]; |
e80ac6c4 AG |
388 | |
389 | /* | |
390 | * If the MappedLUN entry is being disabled, the entry in | |
391 | * port->sep_alua_list must be removed now before clearing the | |
392 | * struct se_dev_entry pointers below as logic in | |
393 | * core_alua_do_transition_tg_pt() depends on these being present. | |
394 | * | |
395 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
396 | * that have not been explicitly converted to MappedLUNs -> | |
397 | * struct se_lun_acl, but we remove deve->alua_port_list from | |
398 | * port->sep_alua_list. This also means that active UAs and | |
399 | * NodeACL context specific PR metadata for demo-mode | |
400 | * MappedLUN *deve will be released below.. | |
401 | */ | |
402 | spin_lock_bh(&port->sep_alua_lock); | |
403 | list_del(&deve->alua_port_list); | |
404 | spin_unlock_bh(&port->sep_alua_lock); | |
c66ac9db NB |
405 | /* |
406 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
407 | * PR operation to complete. | |
408 | */ | |
c66ac9db NB |
409 | while (atomic_read(&deve->pr_ref_count) != 0) |
410 | cpu_relax(); | |
77d4c745 | 411 | |
c66ac9db NB |
412 | spin_lock_irq(&nacl->device_list_lock); |
413 | /* | |
414 | * Disable struct se_dev_entry LUN ACL mapping | |
415 | */ | |
416 | core_scsi3_ua_release_all(deve); | |
417 | deve->se_lun = NULL; | |
418 | deve->se_lun_acl = NULL; | |
419 | deve->lun_flags = 0; | |
420 | deve->creation_time = 0; | |
421 | deve->attach_count--; | |
422 | spin_unlock_irq(&nacl->device_list_lock); | |
423 | ||
424 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | /* core_clear_lun_from_tpg(): | |
429 | * | |
430 | * | |
431 | */ | |
432 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
433 | { | |
434 | struct se_node_acl *nacl; | |
435 | struct se_dev_entry *deve; | |
436 | u32 i; | |
437 | ||
28638887 | 438 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 439 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
28638887 | 440 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
441 | |
442 | spin_lock_irq(&nacl->device_list_lock); | |
443 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 444 | deve = nacl->device_list[i]; |
c66ac9db NB |
445 | if (lun != deve->se_lun) |
446 | continue; | |
447 | spin_unlock_irq(&nacl->device_list_lock); | |
448 | ||
e80ac6c4 | 449 | core_disable_device_list_for_node(lun, NULL, |
c66ac9db | 450 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
e80ac6c4 | 451 | nacl, tpg); |
c66ac9db NB |
452 | |
453 | spin_lock_irq(&nacl->device_list_lock); | |
454 | } | |
455 | spin_unlock_irq(&nacl->device_list_lock); | |
456 | ||
28638887 | 457 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 458 | } |
28638887 | 459 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
460 | } |
461 | ||
462 | static struct se_port *core_alloc_port(struct se_device *dev) | |
463 | { | |
464 | struct se_port *port, *port_tmp; | |
465 | ||
466 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
6708bb27 AG |
467 | if (!port) { |
468 | pr_err("Unable to allocate struct se_port\n"); | |
e3d6f909 | 469 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
470 | } |
471 | INIT_LIST_HEAD(&port->sep_alua_list); | |
472 | INIT_LIST_HEAD(&port->sep_list); | |
473 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
474 | spin_lock_init(&port->sep_alua_lock); | |
475 | mutex_init(&port->sep_tg_pt_md_mutex); | |
476 | ||
477 | spin_lock(&dev->se_port_lock); | |
478 | if (dev->dev_port_count == 0x0000ffff) { | |
6708bb27 | 479 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
480 | " 0x0000ffff\n"); |
481 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 482 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
483 | } |
484 | again: | |
485 | /* | |
35d1efe8 | 486 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db NB |
487 | * Here is the table from spc4r17 section 7.7.3.8. |
488 | * | |
489 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
490 | * | |
491 | * Code Description | |
492 | * 0h Reserved | |
493 | * 1h Relative port 1, historically known as port A | |
494 | * 2h Relative port 2, historically known as port B | |
495 | * 3h to FFFFh Relative port 3 through 65 535 | |
496 | */ | |
497 | port->sep_rtpi = dev->dev_rpti_counter++; | |
6708bb27 | 498 | if (!port->sep_rtpi) |
c66ac9db NB |
499 | goto again; |
500 | ||
501 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
502 | /* | |
35d1efe8 | 503 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db NB |
504 | * for 16-bit wrap.. |
505 | */ | |
506 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
507 | goto again; | |
508 | } | |
509 | spin_unlock(&dev->se_port_lock); | |
510 | ||
511 | return port; | |
512 | } | |
513 | ||
514 | static void core_export_port( | |
515 | struct se_device *dev, | |
516 | struct se_portal_group *tpg, | |
517 | struct se_port *port, | |
518 | struct se_lun *lun) | |
519 | { | |
c66ac9db NB |
520 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
521 | ||
522 | spin_lock(&dev->se_port_lock); | |
523 | spin_lock(&lun->lun_sep_lock); | |
524 | port->sep_tpg = tpg; | |
525 | port->sep_lun = lun; | |
526 | lun->lun_sep = port; | |
527 | spin_unlock(&lun->lun_sep_lock); | |
528 | ||
529 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
530 | spin_unlock(&dev->se_port_lock); | |
531 | ||
c87fbd56 CH |
532 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV && |
533 | !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { | |
c66ac9db NB |
534 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
535 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
6708bb27 | 536 | pr_err("Unable to allocate t10_alua_tg_pt" |
c66ac9db NB |
537 | "_gp_member_t\n"); |
538 | return; | |
539 | } | |
540 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
541 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
0fd97ccf | 542 | dev->t10_alua.default_tg_pt_gp); |
c66ac9db | 543 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
6708bb27 | 544 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
c66ac9db | 545 | " Group: alua/default_tg_pt_gp\n", |
e3d6f909 | 546 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
547 | } |
548 | ||
549 | dev->dev_port_count++; | |
35d1efe8 | 550 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ |
c66ac9db NB |
551 | } |
552 | ||
553 | /* | |
554 | * Called with struct se_device->se_port_lock spinlock held. | |
555 | */ | |
556 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 557 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
558 | { |
559 | /* | |
560 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
561 | * to complete in __core_scsi3_alloc_registration() | |
562 | */ | |
563 | spin_unlock(&dev->se_port_lock); | |
564 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
565 | cpu_relax(); | |
566 | spin_lock(&dev->se_port_lock); | |
567 | ||
568 | core_alua_free_tg_pt_gp_mem(port); | |
569 | ||
570 | list_del(&port->sep_list); | |
571 | dev->dev_port_count--; | |
572 | kfree(port); | |
c66ac9db NB |
573 | } |
574 | ||
575 | int core_dev_export( | |
576 | struct se_device *dev, | |
577 | struct se_portal_group *tpg, | |
578 | struct se_lun *lun) | |
579 | { | |
0fd97ccf | 580 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
581 | struct se_port *port; |
582 | ||
583 | port = core_alloc_port(dev); | |
e3d6f909 AG |
584 | if (IS_ERR(port)) |
585 | return PTR_ERR(port); | |
c66ac9db NB |
586 | |
587 | lun->lun_se_dev = dev; | |
c66ac9db | 588 | |
0fd97ccf CH |
589 | spin_lock(&hba->device_lock); |
590 | dev->export_count++; | |
591 | spin_unlock(&hba->device_lock); | |
592 | ||
c66ac9db NB |
593 | core_export_port(dev, tpg, port, lun); |
594 | return 0; | |
595 | } | |
596 | ||
597 | void core_dev_unexport( | |
598 | struct se_device *dev, | |
599 | struct se_portal_group *tpg, | |
600 | struct se_lun *lun) | |
601 | { | |
0fd97ccf | 602 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
603 | struct se_port *port = lun->lun_sep; |
604 | ||
605 | spin_lock(&lun->lun_sep_lock); | |
606 | if (lun->lun_se_dev == NULL) { | |
607 | spin_unlock(&lun->lun_sep_lock); | |
608 | return; | |
609 | } | |
610 | spin_unlock(&lun->lun_sep_lock); | |
611 | ||
612 | spin_lock(&dev->se_port_lock); | |
c66ac9db NB |
613 | core_release_port(dev, port); |
614 | spin_unlock(&dev->se_port_lock); | |
615 | ||
0fd97ccf CH |
616 | spin_lock(&hba->device_lock); |
617 | dev->export_count--; | |
618 | spin_unlock(&hba->device_lock); | |
619 | ||
c66ac9db NB |
620 | lun->lun_se_dev = NULL; |
621 | } | |
622 | ||
0fd97ccf | 623 | static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db NB |
624 | { |
625 | struct t10_vpd *vpd, *vpd_tmp; | |
626 | ||
0fd97ccf | 627 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 628 | list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf | 629 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
630 | list_del(&vpd->vpd_list); |
631 | kfree(vpd); | |
632 | } | |
0fd97ccf | 633 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
634 | } |
635 | ||
c8045372 | 636 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a2 | 637 | { |
3e03989b RD |
638 | u32 aligned_max_sectors; |
639 | u32 alignment; | |
525a48a2 NB |
640 | /* |
641 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
642 | * transport_allocate_data_tasks() operation. | |
643 | */ | |
3e03989b RD |
644 | alignment = max(1ul, PAGE_SIZE / block_size); |
645 | aligned_max_sectors = rounddown(max_sectors, alignment); | |
646 | ||
647 | if (max_sectors != aligned_max_sectors) | |
648 | pr_info("Rounding down aligned max_sectors from %u to %u\n", | |
649 | max_sectors, aligned_max_sectors); | |
525a48a2 | 650 | |
3e03989b | 651 | return aligned_max_sectors; |
525a48a2 NB |
652 | } |
653 | ||
c66ac9db NB |
654 | int se_dev_set_max_unmap_lba_count( |
655 | struct se_device *dev, | |
656 | u32 max_unmap_lba_count) | |
657 | { | |
0fd97ccf | 658 | dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
6708bb27 | 659 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
0fd97ccf | 660 | dev, dev->dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
661 | return 0; |
662 | } | |
663 | ||
664 | int se_dev_set_max_unmap_block_desc_count( | |
665 | struct se_device *dev, | |
666 | u32 max_unmap_block_desc_count) | |
667 | { | |
0fd97ccf | 668 | dev->dev_attrib.max_unmap_block_desc_count = |
e3d6f909 | 669 | max_unmap_block_desc_count; |
6708bb27 | 670 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
0fd97ccf | 671 | dev, dev->dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
672 | return 0; |
673 | } | |
674 | ||
675 | int se_dev_set_unmap_granularity( | |
676 | struct se_device *dev, | |
677 | u32 unmap_granularity) | |
678 | { | |
0fd97ccf | 679 | dev->dev_attrib.unmap_granularity = unmap_granularity; |
6708bb27 | 680 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
0fd97ccf | 681 | dev, dev->dev_attrib.unmap_granularity); |
c66ac9db NB |
682 | return 0; |
683 | } | |
684 | ||
685 | int se_dev_set_unmap_granularity_alignment( | |
686 | struct se_device *dev, | |
687 | u32 unmap_granularity_alignment) | |
688 | { | |
0fd97ccf | 689 | dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
6708bb27 | 690 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
0fd97ccf | 691 | dev, dev->dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
692 | return 0; |
693 | } | |
694 | ||
773cbaf7 NB |
695 | int se_dev_set_max_write_same_len( |
696 | struct se_device *dev, | |
697 | u32 max_write_same_len) | |
698 | { | |
699 | dev->dev_attrib.max_write_same_len = max_write_same_len; | |
700 | pr_debug("dev[%p]: Set max_write_same_len: %u\n", | |
701 | dev, dev->dev_attrib.max_write_same_len); | |
702 | return 0; | |
703 | } | |
704 | ||
adfa9570 TB |
705 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) |
706 | { | |
707 | const char *configname; | |
708 | ||
709 | configname = config_item_name(&dev->dev_group.cg_item); | |
710 | if (strlen(configname) >= 16) { | |
711 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
712 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
713 | configname); | |
714 | } | |
715 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
716 | } | |
717 | ||
718 | int se_dev_set_emulate_model_alias(struct se_device *dev, int flag) | |
719 | { | |
720 | if (dev->export_count) { | |
721 | pr_err("dev[%p]: Unable to change model alias" | |
722 | " while export_count is %d\n", | |
723 | dev, dev->export_count); | |
724 | return -EINVAL; | |
725 | } | |
726 | ||
727 | if (flag != 0 && flag != 1) { | |
728 | pr_err("Illegal value %d\n", flag); | |
729 | return -EINVAL; | |
730 | } | |
731 | ||
732 | if (flag) { | |
733 | dev_set_t10_wwn_model_alias(dev); | |
734 | } else { | |
735 | strncpy(&dev->t10_wwn.model[0], | |
736 | dev->transport->inquiry_prod, 16); | |
737 | } | |
738 | dev->dev_attrib.emulate_model_alias = flag; | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
c66ac9db NB |
743 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
744 | { | |
f55918fa | 745 | if (flag != 0 && flag != 1) { |
6708bb27 | 746 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 747 | return -EINVAL; |
c66ac9db | 748 | } |
f55918fa | 749 | |
c638830d AG |
750 | if (flag) { |
751 | pr_err("dpo_emulated not supported\n"); | |
752 | return -EINVAL; | |
753 | } | |
754 | ||
755 | return 0; | |
c66ac9db NB |
756 | } |
757 | ||
758 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
759 | { | |
f55918fa | 760 | if (flag != 0 && flag != 1) { |
6708bb27 | 761 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 762 | return -EINVAL; |
c66ac9db | 763 | } |
f55918fa | 764 | |
fd30e931 NB |
765 | if (flag && |
766 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
767 | pr_err("emulate_fua_write not supported for pSCSI\n"); | |
e3d6f909 | 768 | return -EINVAL; |
c66ac9db | 769 | } |
0fd97ccf | 770 | dev->dev_attrib.emulate_fua_write = flag; |
6708bb27 | 771 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
0fd97ccf | 772 | dev, dev->dev_attrib.emulate_fua_write); |
c66ac9db NB |
773 | return 0; |
774 | } | |
775 | ||
776 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
777 | { | |
f55918fa | 778 | if (flag != 0 && flag != 1) { |
6708bb27 | 779 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 780 | return -EINVAL; |
c66ac9db | 781 | } |
f55918fa | 782 | |
c638830d AG |
783 | if (flag) { |
784 | pr_err("ua read emulated not supported\n"); | |
785 | return -EINVAL; | |
786 | } | |
787 | ||
788 | return 0; | |
c66ac9db NB |
789 | } |
790 | ||
791 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
792 | { | |
f55918fa | 793 | if (flag != 0 && flag != 1) { |
6708bb27 | 794 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 795 | return -EINVAL; |
c66ac9db | 796 | } |
fd30e931 NB |
797 | if (flag && |
798 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
799 | pr_err("emulate_write_cache not supported for pSCSI\n"); | |
e3d6f909 | 800 | return -EINVAL; |
c66ac9db | 801 | } |
d0c8b259 NB |
802 | if (dev->transport->get_write_cache) { |
803 | pr_warn("emulate_write_cache cannot be changed when underlying" | |
804 | " HW reports WriteCacheEnabled, ignoring request\n"); | |
805 | return 0; | |
806 | } | |
807 | ||
0fd97ccf | 808 | dev->dev_attrib.emulate_write_cache = flag; |
6708bb27 | 809 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
0fd97ccf | 810 | dev, dev->dev_attrib.emulate_write_cache); |
c66ac9db NB |
811 | return 0; |
812 | } | |
813 | ||
814 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
815 | { | |
816 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
6708bb27 | 817 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 818 | return -EINVAL; |
c66ac9db NB |
819 | } |
820 | ||
0fd97ccf | 821 | if (dev->export_count) { |
6708bb27 | 822 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
823 | " UA_INTRLCK_CTRL while export_count is %d\n", |
824 | dev, dev->export_count); | |
e3d6f909 | 825 | return -EINVAL; |
c66ac9db | 826 | } |
0fd97ccf | 827 | dev->dev_attrib.emulate_ua_intlck_ctrl = flag; |
6708bb27 | 828 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
0fd97ccf | 829 | dev, dev->dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
830 | |
831 | return 0; | |
832 | } | |
833 | ||
834 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
835 | { | |
836 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 837 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 838 | return -EINVAL; |
c66ac9db NB |
839 | } |
840 | ||
0fd97ccf | 841 | if (dev->export_count) { |
6708bb27 | 842 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
0fd97ccf CH |
843 | " export_count is %d\n", |
844 | dev, dev->export_count); | |
e3d6f909 | 845 | return -EINVAL; |
c66ac9db | 846 | } |
0fd97ccf | 847 | dev->dev_attrib.emulate_tas = flag; |
6708bb27 | 848 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
0fd97ccf | 849 | dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
850 | |
851 | return 0; | |
852 | } | |
853 | ||
854 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
855 | { | |
856 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 857 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 858 | return -EINVAL; |
c66ac9db NB |
859 | } |
860 | /* | |
861 | * We expect this value to be non-zero when generic Block Layer | |
862 | * Discard supported is detected iblock_create_virtdevice(). | |
863 | */ | |
0fd97ccf | 864 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 865 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
866 | return -ENOSYS; |
867 | } | |
868 | ||
0fd97ccf | 869 | dev->dev_attrib.emulate_tpu = flag; |
6708bb27 | 870 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
c66ac9db NB |
871 | dev, flag); |
872 | return 0; | |
873 | } | |
874 | ||
875 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
876 | { | |
877 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 878 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 879 | return -EINVAL; |
c66ac9db NB |
880 | } |
881 | /* | |
882 | * We expect this value to be non-zero when generic Block Layer | |
883 | * Discard supported is detected iblock_create_virtdevice(). | |
884 | */ | |
0fd97ccf | 885 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 886 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
887 | return -ENOSYS; |
888 | } | |
889 | ||
0fd97ccf | 890 | dev->dev_attrib.emulate_tpws = flag; |
6708bb27 | 891 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
c66ac9db NB |
892 | dev, flag); |
893 | return 0; | |
894 | } | |
895 | ||
0123a9ec NB |
896 | int se_dev_set_emulate_caw(struct se_device *dev, int flag) |
897 | { | |
898 | if (flag != 0 && flag != 1) { | |
899 | pr_err("Illegal value %d\n", flag); | |
900 | return -EINVAL; | |
901 | } | |
902 | dev->dev_attrib.emulate_caw = flag; | |
903 | pr_debug("dev[%p]: SE Device CompareAndWrite (AtomicTestandSet): %d\n", | |
904 | dev, flag); | |
905 | ||
906 | return 0; | |
907 | } | |
908 | ||
d397a445 NB |
909 | int se_dev_set_emulate_3pc(struct se_device *dev, int flag) |
910 | { | |
911 | if (flag != 0 && flag != 1) { | |
912 | pr_err("Illegal value %d\n", flag); | |
913 | return -EINVAL; | |
914 | } | |
915 | dev->dev_attrib.emulate_3pc = flag; | |
916 | pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n", | |
917 | dev, flag); | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
c66ac9db NB |
922 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) |
923 | { | |
924 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 925 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 926 | return -EINVAL; |
c66ac9db | 927 | } |
0fd97ccf | 928 | dev->dev_attrib.enforce_pr_isids = flag; |
6708bb27 | 929 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
0fd97ccf | 930 | (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
931 | return 0; |
932 | } | |
933 | ||
e22a7f07 RD |
934 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
935 | { | |
936 | if ((flag != 0) && (flag != 1)) { | |
937 | printk(KERN_ERR "Illegal value %d\n", flag); | |
938 | return -EINVAL; | |
939 | } | |
0fd97ccf | 940 | dev->dev_attrib.is_nonrot = flag; |
5de619a3 | 941 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
e22a7f07 RD |
942 | dev, flag); |
943 | return 0; | |
944 | } | |
945 | ||
5de619a3 NB |
946 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
947 | { | |
948 | if (flag != 0) { | |
949 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" | |
950 | " reordering not implemented\n", dev); | |
951 | return -ENOSYS; | |
952 | } | |
0fd97ccf | 953 | dev->dev_attrib.emulate_rest_reord = flag; |
5de619a3 NB |
954 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
955 | return 0; | |
956 | } | |
957 | ||
c66ac9db NB |
958 | /* |
959 | * Note, this can only be called on unexported SE Device Object. | |
960 | */ | |
961 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
962 | { | |
0fd97ccf | 963 | if (dev->export_count) { |
6708bb27 | 964 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
0fd97ccf CH |
965 | " export_count is %d\n", |
966 | dev, dev->export_count); | |
e3d6f909 | 967 | return -EINVAL; |
c66ac9db | 968 | } |
6708bb27 AG |
969 | if (!queue_depth) { |
970 | pr_err("dev[%p]: Illegal ZERO value for queue" | |
c66ac9db | 971 | "_depth\n", dev); |
e3d6f909 | 972 | return -EINVAL; |
c66ac9db NB |
973 | } |
974 | ||
e3d6f909 | 975 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
0fd97ccf | 976 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { |
6708bb27 | 977 | pr_err("dev[%p]: Passed queue_depth: %u" |
c66ac9db NB |
978 | " exceeds TCM/SE_Device TCQ: %u\n", |
979 | dev, queue_depth, | |
0fd97ccf | 980 | dev->dev_attrib.hw_queue_depth); |
e3d6f909 | 981 | return -EINVAL; |
c66ac9db NB |
982 | } |
983 | } else { | |
0fd97ccf CH |
984 | if (queue_depth > dev->dev_attrib.queue_depth) { |
985 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { | |
6708bb27 | 986 | pr_err("dev[%p]: Passed queue_depth:" |
c66ac9db NB |
987 | " %u exceeds TCM/SE_Device MAX" |
988 | " TCQ: %u\n", dev, queue_depth, | |
0fd97ccf | 989 | dev->dev_attrib.hw_queue_depth); |
e3d6f909 | 990 | return -EINVAL; |
c66ac9db NB |
991 | } |
992 | } | |
993 | } | |
994 | ||
0fd97ccf | 995 | dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
6708bb27 | 996 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
c66ac9db NB |
997 | dev, queue_depth); |
998 | return 0; | |
999 | } | |
1000 | ||
015487b8 RD |
1001 | int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) |
1002 | { | |
7a3cf6ca NB |
1003 | int block_size = dev->dev_attrib.block_size; |
1004 | ||
0fd97ccf | 1005 | if (dev->export_count) { |
015487b8 | 1006 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
1007 | " fabric_max_sectors while export_count is %d\n", |
1008 | dev, dev->export_count); | |
015487b8 RD |
1009 | return -EINVAL; |
1010 | } | |
1011 | if (!fabric_max_sectors) { | |
1012 | pr_err("dev[%p]: Illegal ZERO value for" | |
1013 | " fabric_max_sectors\n", dev); | |
1014 | return -EINVAL; | |
1015 | } | |
1016 | if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
1017 | pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" | |
1018 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, | |
1019 | DA_STATUS_MAX_SECTORS_MIN); | |
1020 | return -EINVAL; | |
1021 | } | |
1022 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
0fd97ccf | 1023 | if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) { |
015487b8 RD |
1024 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
1025 | " greater than TCM/SE_Device max_sectors:" | |
1026 | " %u\n", dev, fabric_max_sectors, | |
0fd97ccf | 1027 | dev->dev_attrib.hw_max_sectors); |
015487b8 RD |
1028 | return -EINVAL; |
1029 | } | |
1030 | } else { | |
1031 | if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
1032 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" | |
1033 | " greater than DA_STATUS_MAX_SECTORS_MAX:" | |
1034 | " %u\n", dev, fabric_max_sectors, | |
1035 | DA_STATUS_MAX_SECTORS_MAX); | |
1036 | return -EINVAL; | |
1037 | } | |
1038 | } | |
1039 | /* | |
1040 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
1041 | */ | |
7a3cf6ca NB |
1042 | if (!block_size) { |
1043 | block_size = 512; | |
1044 | pr_warn("Defaulting to 512 for zero block_size\n"); | |
1045 | } | |
015487b8 | 1046 | fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, |
7a3cf6ca | 1047 | block_size); |
015487b8 | 1048 | |
0fd97ccf | 1049 | dev->dev_attrib.fabric_max_sectors = fabric_max_sectors; |
015487b8 RD |
1050 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
1051 | dev, fabric_max_sectors); | |
1052 | return 0; | |
1053 | } | |
1054 | ||
c66ac9db NB |
1055 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
1056 | { | |
0fd97ccf | 1057 | if (dev->export_count) { |
6708bb27 | 1058 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
1059 | " optimal_sectors while export_count is %d\n", |
1060 | dev, dev->export_count); | |
c66ac9db NB |
1061 | return -EINVAL; |
1062 | } | |
e3d6f909 | 1063 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1064 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
c66ac9db NB |
1065 | " changed for TCM/pSCSI\n", dev); |
1066 | return -EINVAL; | |
1067 | } | |
0fd97ccf | 1068 | if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { |
6708bb27 | 1069 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
015487b8 | 1070 | " greater than fabric_max_sectors: %u\n", dev, |
0fd97ccf | 1071 | optimal_sectors, dev->dev_attrib.fabric_max_sectors); |
c66ac9db NB |
1072 | return -EINVAL; |
1073 | } | |
1074 | ||
0fd97ccf | 1075 | dev->dev_attrib.optimal_sectors = optimal_sectors; |
6708bb27 | 1076 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
c66ac9db NB |
1077 | dev, optimal_sectors); |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1082 | { | |
0fd97ccf | 1083 | if (dev->export_count) { |
6708bb27 | 1084 | pr_err("dev[%p]: Unable to change SE Device block_size" |
0fd97ccf CH |
1085 | " while export_count is %d\n", |
1086 | dev, dev->export_count); | |
e3d6f909 | 1087 | return -EINVAL; |
c66ac9db NB |
1088 | } |
1089 | ||
1090 | if ((block_size != 512) && | |
1091 | (block_size != 1024) && | |
1092 | (block_size != 2048) && | |
1093 | (block_size != 4096)) { | |
6708bb27 | 1094 | pr_err("dev[%p]: Illegal value for block_device: %u" |
c66ac9db NB |
1095 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
1096 | dev, block_size); | |
e3d6f909 | 1097 | return -EINVAL; |
c66ac9db NB |
1098 | } |
1099 | ||
e3d6f909 | 1100 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1101 | pr_err("dev[%p]: Not allowed to change block_size for" |
c66ac9db NB |
1102 | " Physical Device, use for Linux/SCSI to change" |
1103 | " block_size for underlying hardware\n", dev); | |
e3d6f909 | 1104 | return -EINVAL; |
c66ac9db NB |
1105 | } |
1106 | ||
0fd97ccf | 1107 | dev->dev_attrib.block_size = block_size; |
6708bb27 | 1108 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
c66ac9db NB |
1109 | dev, block_size); |
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | struct se_lun *core_dev_add_lun( | |
1114 | struct se_portal_group *tpg, | |
c66ac9db NB |
1115 | struct se_device *dev, |
1116 | u32 lun) | |
1117 | { | |
1118 | struct se_lun *lun_p; | |
8d9efe53 | 1119 | int rc; |
c66ac9db | 1120 | |
c66ac9db | 1121 | lun_p = core_tpg_pre_addlun(tpg, lun); |
8d9efe53 SAS |
1122 | if (IS_ERR(lun_p)) |
1123 | return lun_p; | |
c66ac9db | 1124 | |
58d92618 NB |
1125 | rc = core_tpg_post_addlun(tpg, lun_p, |
1126 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); | |
8d9efe53 SAS |
1127 | if (rc < 0) |
1128 | return ERR_PTR(rc); | |
c66ac9db | 1129 | |
6708bb27 | 1130 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 AG |
1131 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1132 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, | |
2dca673b | 1133 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db NB |
1134 | /* |
1135 | * Update LUN maps for dynamically added initiators when | |
1136 | * generate_node_acl is enabled. | |
1137 | */ | |
e3d6f909 | 1138 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 1139 | struct se_node_acl *acl; |
28638887 | 1140 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 1141 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
1142 | if (acl->dynamic_node_acl && |
1143 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
1144 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
28638887 | 1145 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db | 1146 | core_tpg_add_node_to_devs(acl, tpg); |
28638887 | 1147 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1148 | } |
1149 | } | |
28638887 | 1150 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1151 | } |
1152 | ||
1153 | return lun_p; | |
1154 | } | |
1155 | ||
1156 | /* core_dev_del_lun(): | |
1157 | * | |
1158 | * | |
1159 | */ | |
1160 | int core_dev_del_lun( | |
1161 | struct se_portal_group *tpg, | |
1162 | u32 unpacked_lun) | |
1163 | { | |
1164 | struct se_lun *lun; | |
c66ac9db | 1165 | |
8d9efe53 SAS |
1166 | lun = core_tpg_pre_dellun(tpg, unpacked_lun); |
1167 | if (IS_ERR(lun)) | |
1168 | return PTR_ERR(lun); | |
c66ac9db NB |
1169 | |
1170 | core_tpg_post_dellun(tpg, lun); | |
1171 | ||
6708bb27 | 1172 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
e3d6f909 AG |
1173 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
1174 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, | |
1175 | tpg->se_tpg_tfo->get_fabric_name()); | |
c66ac9db NB |
1176 | |
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1181 | { | |
1182 | struct se_lun *lun; | |
1183 | ||
1184 | spin_lock(&tpg->tpg_lun_lock); | |
1185 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1186 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
c66ac9db | 1187 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1188 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1189 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1190 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1191 | spin_unlock(&tpg->tpg_lun_lock); |
1192 | return NULL; | |
1193 | } | |
4a5a75f3 | 1194 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1195 | |
1196 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
6708bb27 | 1197 | pr_err("%s Logical Unit Number: %u is not free on" |
c66ac9db | 1198 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1199 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1200 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1201 | spin_unlock(&tpg->tpg_lun_lock); |
1202 | return NULL; | |
1203 | } | |
1204 | spin_unlock(&tpg->tpg_lun_lock); | |
1205 | ||
1206 | return lun; | |
1207 | } | |
1208 | ||
1209 | /* core_dev_get_lun(): | |
1210 | * | |
1211 | * | |
1212 | */ | |
1213 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1214 | { | |
1215 | struct se_lun *lun; | |
1216 | ||
1217 | spin_lock(&tpg->tpg_lun_lock); | |
1218 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1219 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
c66ac9db | 1220 | "_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1221 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1222 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1223 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1224 | spin_unlock(&tpg->tpg_lun_lock); |
1225 | return NULL; | |
1226 | } | |
4a5a75f3 | 1227 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1228 | |
1229 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
6708bb27 | 1230 | pr_err("%s Logical Unit Number: %u is not active on" |
c66ac9db | 1231 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1232 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1233 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1234 | spin_unlock(&tpg->tpg_lun_lock); |
1235 | return NULL; | |
1236 | } | |
1237 | spin_unlock(&tpg->tpg_lun_lock); | |
1238 | ||
1239 | return lun; | |
1240 | } | |
1241 | ||
1242 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1243 | struct se_portal_group *tpg, | |
fcf29481 | 1244 | struct se_node_acl *nacl, |
c66ac9db | 1245 | u32 mapped_lun, |
c66ac9db NB |
1246 | int *ret) |
1247 | { | |
1248 | struct se_lun_acl *lacl; | |
c66ac9db | 1249 | |
fcf29481 | 1250 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 1251 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1252 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1253 | *ret = -EOVERFLOW; |
1254 | return NULL; | |
1255 | } | |
c66ac9db | 1256 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27 AG |
1257 | if (!lacl) { |
1258 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
1259 | *ret = -ENOMEM; |
1260 | return NULL; | |
1261 | } | |
1262 | ||
1263 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1264 | lacl->mapped_lun = mapped_lun; | |
1265 | lacl->se_lun_nacl = nacl; | |
fcf29481 NB |
1266 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
1267 | nacl->initiatorname); | |
c66ac9db NB |
1268 | |
1269 | return lacl; | |
1270 | } | |
1271 | ||
1272 | int core_dev_add_initiator_node_lun_acl( | |
1273 | struct se_portal_group *tpg, | |
1274 | struct se_lun_acl *lacl, | |
1275 | u32 unpacked_lun, | |
1276 | u32 lun_access) | |
1277 | { | |
1278 | struct se_lun *lun; | |
1279 | struct se_node_acl *nacl; | |
1280 | ||
1281 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
6708bb27 AG |
1282 | if (!lun) { |
1283 | pr_err("%s Logical Unit Number: %u is not active on" | |
c66ac9db | 1284 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1285 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1286 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1287 | return -EINVAL; |
1288 | } | |
1289 | ||
1290 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1291 | if (!nacl) |
c66ac9db NB |
1292 | return -EINVAL; |
1293 | ||
1294 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1295 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1296 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1297 | ||
1298 | lacl->se_lun = lun; | |
1299 | ||
e80ac6c4 AG |
1300 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
1301 | lun_access, nacl, tpg) < 0) | |
c66ac9db NB |
1302 | return -EINVAL; |
1303 | ||
1304 | spin_lock(&lun->lun_acl_lock); | |
1305 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
1306 | atomic_inc(&lun->lun_acl_count); | |
1307 | smp_mb__after_atomic_inc(); | |
1308 | spin_unlock(&lun->lun_acl_lock); | |
1309 | ||
6708bb27 | 1310 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 AG |
1311 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1312 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1313 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1314 | lacl->initiatorname); | |
1315 | /* | |
1316 | * Check to see if there are any existing persistent reservation APTPL | |
1317 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1318 | */ | |
1319 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | /* core_dev_del_initiator_node_lun_acl(): | |
1324 | * | |
1325 | * | |
1326 | */ | |
1327 | int core_dev_del_initiator_node_lun_acl( | |
1328 | struct se_portal_group *tpg, | |
1329 | struct se_lun *lun, | |
1330 | struct se_lun_acl *lacl) | |
1331 | { | |
1332 | struct se_node_acl *nacl; | |
1333 | ||
1334 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1335 | if (!nacl) |
c66ac9db NB |
1336 | return -EINVAL; |
1337 | ||
1338 | spin_lock(&lun->lun_acl_lock); | |
1339 | list_del(&lacl->lacl_list); | |
1340 | atomic_dec(&lun->lun_acl_count); | |
1341 | smp_mb__after_atomic_dec(); | |
1342 | spin_unlock(&lun->lun_acl_lock); | |
1343 | ||
e80ac6c4 AG |
1344 | core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, |
1345 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
1346 | |
1347 | lacl->se_lun = NULL; | |
1348 | ||
6708bb27 | 1349 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 1350 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
1351 | tpg->se_tpg_tfo->get_fabric_name(), |
1352 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1353 | lacl->initiatorname, lacl->mapped_lun); |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | void core_dev_free_initiator_node_lun_acl( | |
1359 | struct se_portal_group *tpg, | |
1360 | struct se_lun_acl *lacl) | |
1361 | { | |
6708bb27 | 1362 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
1363 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1364 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1365 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1366 | lacl->initiatorname, lacl->mapped_lun); |
1367 | ||
1368 | kfree(lacl); | |
1369 | } | |
1370 | ||
0fd97ccf CH |
1371 | static void scsi_dump_inquiry(struct se_device *dev) |
1372 | { | |
1373 | struct t10_wwn *wwn = &dev->t10_wwn; | |
1374 | char buf[17]; | |
1375 | int i, device_type; | |
1376 | /* | |
1377 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer | |
1378 | */ | |
1379 | for (i = 0; i < 8; i++) | |
1380 | if (wwn->vendor[i] >= 0x20) | |
1381 | buf[i] = wwn->vendor[i]; | |
1382 | else | |
1383 | buf[i] = ' '; | |
1384 | buf[i] = '\0'; | |
1385 | pr_debug(" Vendor: %s\n", buf); | |
1386 | ||
1387 | for (i = 0; i < 16; i++) | |
1388 | if (wwn->model[i] >= 0x20) | |
1389 | buf[i] = wwn->model[i]; | |
1390 | else | |
1391 | buf[i] = ' '; | |
1392 | buf[i] = '\0'; | |
1393 | pr_debug(" Model: %s\n", buf); | |
1394 | ||
1395 | for (i = 0; i < 4; i++) | |
1396 | if (wwn->revision[i] >= 0x20) | |
1397 | buf[i] = wwn->revision[i]; | |
1398 | else | |
1399 | buf[i] = ' '; | |
1400 | buf[i] = '\0'; | |
1401 | pr_debug(" Revision: %s\n", buf); | |
1402 | ||
1403 | device_type = dev->transport->get_device_type(dev); | |
1404 | pr_debug(" Type: %s ", scsi_device_type(device_type)); | |
0fd97ccf CH |
1405 | } |
1406 | ||
1407 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |
1408 | { | |
1409 | struct se_device *dev; | |
1410 | ||
1411 | dev = hba->transport->alloc_device(hba, name); | |
1412 | if (!dev) | |
1413 | return NULL; | |
1414 | ||
0ff87549 | 1415 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf CH |
1416 | dev->se_hba = hba; |
1417 | dev->transport = hba->transport; | |
1418 | ||
1419 | INIT_LIST_HEAD(&dev->dev_list); | |
1420 | INIT_LIST_HEAD(&dev->dev_sep_list); | |
1421 | INIT_LIST_HEAD(&dev->dev_tmr_list); | |
1422 | INIT_LIST_HEAD(&dev->delayed_cmd_list); | |
1423 | INIT_LIST_HEAD(&dev->state_list); | |
1424 | INIT_LIST_HEAD(&dev->qf_cmd_list); | |
d9ea32bf | 1425 | INIT_LIST_HEAD(&dev->g_dev_node); |
0fd97ccf CH |
1426 | spin_lock_init(&dev->stats_lock); |
1427 | spin_lock_init(&dev->execute_task_lock); | |
1428 | spin_lock_init(&dev->delayed_cmd_lock); | |
1429 | spin_lock_init(&dev->dev_reservation_lock); | |
1430 | spin_lock_init(&dev->se_port_lock); | |
1431 | spin_lock_init(&dev->se_tmr_lock); | |
1432 | spin_lock_init(&dev->qf_cmd_lock); | |
68ff9b9b | 1433 | sema_init(&dev->caw_sem, 1); |
0fd97ccf CH |
1434 | atomic_set(&dev->dev_ordered_id, 0); |
1435 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); | |
1436 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); | |
1437 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); | |
1438 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); | |
1439 | spin_lock_init(&dev->t10_pr.registration_lock); | |
1440 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); | |
1441 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); | |
1442 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); | |
1443 | ||
0fd97ccf CH |
1444 | dev->t10_wwn.t10_dev = dev; |
1445 | dev->t10_alua.t10_dev = dev; | |
1446 | ||
1447 | dev->dev_attrib.da_dev = dev; | |
adfa9570 | 1448 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
0fd97ccf CH |
1449 | dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
1450 | dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
1451 | dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
1452 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
1453 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
1454 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
1455 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
1456 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
0123a9ec | 1457 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
d397a445 | 1458 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
0fd97ccf CH |
1459 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
1460 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; | |
1461 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | |
1462 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; | |
1463 | dev->dev_attrib.max_unmap_block_desc_count = | |
1464 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
1465 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
1466 | dev->dev_attrib.unmap_granularity_alignment = | |
1467 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; | |
773cbaf7 | 1468 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf CH |
1469 | dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; |
1470 | dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; | |
1471 | ||
0fd97ccf CH |
1472 | return dev; |
1473 | } | |
1474 | ||
1475 | int target_configure_device(struct se_device *dev) | |
1476 | { | |
1477 | struct se_hba *hba = dev->se_hba; | |
1478 | int ret; | |
1479 | ||
1480 | if (dev->dev_flags & DF_CONFIGURED) { | |
1481 | pr_err("se_dev->se_dev_ptr already set for storage" | |
1482 | " object\n"); | |
1483 | return -EEXIST; | |
1484 | } | |
1485 | ||
1486 | ret = dev->transport->configure_device(dev); | |
1487 | if (ret) | |
1488 | goto out; | |
1489 | dev->dev_flags |= DF_CONFIGURED; | |
1490 | ||
1491 | /* | |
1492 | * XXX: there is not much point to have two different values here.. | |
1493 | */ | |
1494 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; | |
1495 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; | |
1496 | ||
1497 | /* | |
1498 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers | |
1499 | */ | |
1500 | dev->dev_attrib.hw_max_sectors = | |
1501 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, | |
1502 | dev->dev_attrib.hw_block_size); | |
1503 | ||
1504 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); | |
1505 | dev->creation_time = get_jiffies_64(); | |
1506 | ||
0fd97ccf CH |
1507 | ret = core_setup_alua(dev); |
1508 | if (ret) | |
1509 | goto out; | |
1510 | ||
1511 | /* | |
1512 | * Startup the struct se_device processing thread | |
1513 | */ | |
1514 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, | |
1515 | dev->transport->name); | |
1516 | if (!dev->tmr_wq) { | |
1517 | pr_err("Unable to create tmr workqueue for %s\n", | |
1518 | dev->transport->name); | |
1519 | ret = -ENOMEM; | |
1520 | goto out_free_alua; | |
1521 | } | |
1522 | ||
1523 | /* | |
1524 | * Setup work_queue for QUEUE_FULL | |
1525 | */ | |
1526 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); | |
1527 | ||
1528 | /* | |
1529 | * Preload the initial INQUIRY const values if we are doing | |
1530 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI | |
1531 | * passthrough because this is being provided by the backend LLD. | |
1532 | */ | |
1533 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { | |
1534 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); | |
1535 | strncpy(&dev->t10_wwn.model[0], | |
1536 | dev->transport->inquiry_prod, 16); | |
1537 | strncpy(&dev->t10_wwn.revision[0], | |
1538 | dev->transport->inquiry_rev, 4); | |
1539 | } | |
1540 | ||
1541 | scsi_dump_inquiry(dev); | |
1542 | ||
1543 | spin_lock(&hba->device_lock); | |
1544 | hba->dev_count++; | |
1545 | spin_unlock(&hba->device_lock); | |
d9ea32bf NB |
1546 | |
1547 | mutex_lock(&g_device_mutex); | |
1548 | list_add_tail(&dev->g_dev_node, &g_device_list); | |
1549 | mutex_unlock(&g_device_mutex); | |
1550 | ||
0fd97ccf CH |
1551 | return 0; |
1552 | ||
1553 | out_free_alua: | |
1554 | core_alua_free_lu_gp_mem(dev); | |
1555 | out: | |
1556 | se_release_vpd_for_dev(dev); | |
1557 | return ret; | |
1558 | } | |
1559 | ||
1560 | void target_free_device(struct se_device *dev) | |
1561 | { | |
1562 | struct se_hba *hba = dev->se_hba; | |
1563 | ||
1564 | WARN_ON(!list_empty(&dev->dev_sep_list)); | |
1565 | ||
1566 | if (dev->dev_flags & DF_CONFIGURED) { | |
1567 | destroy_workqueue(dev->tmr_wq); | |
1568 | ||
d9ea32bf NB |
1569 | mutex_lock(&g_device_mutex); |
1570 | list_del(&dev->g_dev_node); | |
1571 | mutex_unlock(&g_device_mutex); | |
1572 | ||
0fd97ccf CH |
1573 | spin_lock(&hba->device_lock); |
1574 | hba->dev_count--; | |
1575 | spin_unlock(&hba->device_lock); | |
1576 | } | |
1577 | ||
1578 | core_alua_free_lu_gp_mem(dev); | |
1579 | core_scsi3_free_all_registrations(dev); | |
1580 | se_release_vpd_for_dev(dev); | |
1581 | ||
1582 | dev->transport->free_device(dev); | |
1583 | } | |
1584 | ||
c66ac9db NB |
1585 | int core_dev_setup_virtual_lun0(void) |
1586 | { | |
1587 | struct se_hba *hba; | |
1588 | struct se_device *dev; | |
db5d1c3c | 1589 | char buf[] = "rd_pages=8,rd_nullio=1"; |
c66ac9db NB |
1590 | int ret; |
1591 | ||
6708bb27 | 1592 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
1593 | if (IS_ERR(hba)) |
1594 | return PTR_ERR(hba); | |
1595 | ||
0fd97ccf CH |
1596 | dev = target_alloc_device(hba, "virt_lun0"); |
1597 | if (!dev) { | |
c66ac9db | 1598 | ret = -ENOMEM; |
0fd97ccf | 1599 | goto out_free_hba; |
c66ac9db | 1600 | } |
c66ac9db | 1601 | |
0fd97ccf | 1602 | hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db | 1603 | |
0fd97ccf CH |
1604 | ret = target_configure_device(dev); |
1605 | if (ret) | |
1606 | goto out_free_se_dev; | |
c66ac9db | 1607 | |
0fd97ccf CH |
1608 | lun0_hba = hba; |
1609 | g_lun0_dev = dev; | |
c66ac9db | 1610 | return 0; |
0fd97ccf CH |
1611 | |
1612 | out_free_se_dev: | |
1613 | target_free_device(dev); | |
1614 | out_free_hba: | |
1615 | core_delete_hba(hba); | |
c66ac9db NB |
1616 | return ret; |
1617 | } | |
1618 | ||
1619 | ||
1620 | void core_dev_release_virtual_lun0(void) | |
1621 | { | |
e3d6f909 | 1622 | struct se_hba *hba = lun0_hba; |
c66ac9db | 1623 | |
6708bb27 | 1624 | if (!hba) |
c66ac9db NB |
1625 | return; |
1626 | ||
e3d6f909 | 1627 | if (g_lun0_dev) |
0fd97ccf | 1628 | target_free_device(g_lun0_dev); |
c66ac9db NB |
1629 | core_delete_hba(hba); |
1630 | } |