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 | * | |
fd9a11d7 | 7 | * (c) Copyright 2003-2012 RisingTide Systems LLC. |
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 | ||
e3d6f909 | 50 | static struct se_hba *lun0_hba; |
e3d6f909 AG |
51 | /* not static, needed by tpg.c */ |
52 | struct se_device *g_lun0_dev; | |
53 | ||
de103c93 CH |
54 | sense_reason_t |
55 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) | |
c66ac9db | 56 | { |
c66ac9db | 57 | struct se_lun *se_lun = NULL; |
e3d6f909 | 58 | struct se_session *se_sess = se_cmd->se_sess; |
5951146d | 59 | struct se_device *dev; |
c66ac9db | 60 | unsigned long flags; |
c66ac9db | 61 | |
de103c93 CH |
62 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
63 | return TCM_NON_EXISTENT_LUN; | |
d8144955 | 64 | |
78faae37 | 65 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 66 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
67 | if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
68 | struct se_dev_entry *deve = se_cmd->se_deve; | |
69 | ||
70 | deve->total_cmds++; | |
5951146d AG |
71 | |
72 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
73 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
6708bb27 | 74 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
5951146d AG |
75 | " Access for 0x%08x\n", |
76 | se_cmd->se_tfo->get_fabric_name(), | |
77 | unpacked_lun); | |
78faae37 | 78 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
de103c93 | 79 | return TCM_WRITE_PROTECTED; |
c66ac9db | 80 | } |
5951146d AG |
81 | |
82 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
83 | deve->write_bytes += se_cmd->data_length; | |
84 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
85 | deve->read_bytes += se_cmd->data_length; | |
86 | ||
5951146d AG |
87 | se_lun = deve->se_lun; |
88 | se_cmd->se_lun = deve->se_lun; | |
c66ac9db NB |
89 | se_cmd->pr_res_key = deve->pr_res_key; |
90 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db NB |
91 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
92 | } | |
78faae37 | 93 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
94 | |
95 | if (!se_lun) { | |
5951146d AG |
96 | /* |
97 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
98 | * REPORT_LUNS, et al to be returned when no active | |
99 | * MappedLUN=0 exists for this Initiator Port. | |
100 | */ | |
101 | if (unpacked_lun != 0) { | |
6708bb27 | 102 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 103 | " Access for 0x%08x\n", |
e3d6f909 | 104 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 105 | unpacked_lun); |
de103c93 | 106 | return TCM_NON_EXISTENT_LUN; |
5951146d AG |
107 | } |
108 | /* | |
109 | * Force WRITE PROTECT for virtual LUN 0 | |
110 | */ | |
111 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
de103c93 CH |
112 | (se_cmd->data_direction != DMA_NONE)) |
113 | return TCM_WRITE_PROTECTED; | |
5951146d AG |
114 | |
115 | se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
116 | se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; | |
117 | se_cmd->orig_fe_lun = 0; | |
5951146d | 118 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
c66ac9db | 119 | } |
c66ac9db | 120 | |
5951146d AG |
121 | /* Directly associate cmd with se_dev */ |
122 | se_cmd->se_dev = se_lun->lun_se_dev; | |
123 | ||
124 | /* TODO: get rid of this and use atomics for stats */ | |
125 | dev = se_lun->lun_se_dev; | |
78faae37 | 126 | spin_lock_irqsave(&dev->stats_lock, flags); |
c66ac9db NB |
127 | dev->num_cmds++; |
128 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
129 | dev->write_bytes += se_cmd->data_length; | |
130 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) | |
131 | dev->read_bytes += se_cmd->data_length; | |
78faae37 | 132 | spin_unlock_irqrestore(&dev->stats_lock, flags); |
c66ac9db | 133 | |
c66ac9db | 134 | spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); |
5951146d | 135 | list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); |
c66ac9db NB |
136 | spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); |
137 | ||
138 | return 0; | |
139 | } | |
5951146d | 140 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 141 | |
5951146d | 142 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 143 | { |
c66ac9db NB |
144 | struct se_dev_entry *deve; |
145 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 146 | struct se_session *se_sess = se_cmd->se_sess; |
c66ac9db | 147 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 148 | unsigned long flags; |
c66ac9db | 149 | |
de103c93 | 150 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
e3d6f909 | 151 | return -ENODEV; |
d8144955 | 152 | |
5e1be919 | 153 | spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); |
f2083241 | 154 | se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; |
5951146d AG |
155 | deve = se_cmd->se_deve; |
156 | ||
c66ac9db | 157 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { |
5951146d AG |
158 | se_tmr->tmr_lun = deve->se_lun; |
159 | se_cmd->se_lun = deve->se_lun; | |
160 | se_lun = deve->se_lun; | |
c66ac9db NB |
161 | se_cmd->pr_res_key = deve->pr_res_key; |
162 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 163 | } |
5e1be919 | 164 | spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); |
c66ac9db NB |
165 | |
166 | if (!se_lun) { | |
6708bb27 | 167 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 168 | " Access for 0x%08x\n", |
e3d6f909 | 169 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 170 | unpacked_lun); |
e3d6f909 | 171 | return -ENODEV; |
c66ac9db | 172 | } |
c66ac9db | 173 | |
5951146d AG |
174 | /* Directly associate cmd with se_dev */ |
175 | se_cmd->se_dev = se_lun->lun_se_dev; | |
176 | se_tmr->tmr_dev = se_lun->lun_se_dev; | |
177 | ||
5e1be919 | 178 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 179 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 180 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
181 | |
182 | return 0; | |
183 | } | |
5951146d | 184 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db NB |
185 | |
186 | /* | |
187 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
188 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count | |
189 | * when a matching rtpi is found. | |
190 | */ | |
191 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
192 | struct se_node_acl *nacl, | |
193 | u16 rtpi) | |
194 | { | |
195 | struct se_dev_entry *deve; | |
196 | struct se_lun *lun; | |
197 | struct se_port *port; | |
198 | struct se_portal_group *tpg = nacl->se_tpg; | |
199 | u32 i; | |
200 | ||
201 | spin_lock_irq(&nacl->device_list_lock); | |
202 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 203 | deve = nacl->device_list[i]; |
c66ac9db NB |
204 | |
205 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
206 | continue; | |
207 | ||
208 | lun = deve->se_lun; | |
6708bb27 AG |
209 | if (!lun) { |
210 | pr_err("%s device entries device pointer is" | |
c66ac9db | 211 | " NULL, but Initiator has access.\n", |
e3d6f909 | 212 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
213 | continue; |
214 | } | |
215 | port = lun->lun_sep; | |
6708bb27 AG |
216 | if (!port) { |
217 | pr_err("%s device entries device pointer is" | |
c66ac9db | 218 | " NULL, but Initiator has access.\n", |
e3d6f909 | 219 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
220 | continue; |
221 | } | |
222 | if (port->sep_rtpi != rtpi) | |
223 | continue; | |
224 | ||
225 | atomic_inc(&deve->pr_ref_count); | |
226 | smp_mb__after_atomic_inc(); | |
227 | spin_unlock_irq(&nacl->device_list_lock); | |
228 | ||
229 | return deve; | |
230 | } | |
231 | spin_unlock_irq(&nacl->device_list_lock); | |
232 | ||
233 | return NULL; | |
234 | } | |
235 | ||
236 | int core_free_device_list_for_node( | |
237 | struct se_node_acl *nacl, | |
238 | struct se_portal_group *tpg) | |
239 | { | |
240 | struct se_dev_entry *deve; | |
241 | struct se_lun *lun; | |
242 | u32 i; | |
243 | ||
244 | if (!nacl->device_list) | |
245 | return 0; | |
246 | ||
247 | spin_lock_irq(&nacl->device_list_lock); | |
248 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 249 | deve = nacl->device_list[i]; |
c66ac9db NB |
250 | |
251 | if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) | |
252 | continue; | |
253 | ||
254 | if (!deve->se_lun) { | |
6708bb27 | 255 | pr_err("%s device entries device pointer is" |
c66ac9db | 256 | " NULL, but Initiator has access.\n", |
e3d6f909 | 257 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
258 | continue; |
259 | } | |
260 | lun = deve->se_lun; | |
261 | ||
262 | spin_unlock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
263 | core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, |
264 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
265 | spin_lock_irq(&nacl->device_list_lock); |
266 | } | |
267 | spin_unlock_irq(&nacl->device_list_lock); | |
268 | ||
f2083241 | 269 | array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); |
c66ac9db NB |
270 | nacl->device_list = NULL; |
271 | ||
272 | return 0; | |
273 | } | |
274 | ||
c66ac9db NB |
275 | void core_update_device_list_access( |
276 | u32 mapped_lun, | |
277 | u32 lun_access, | |
278 | struct se_node_acl *nacl) | |
279 | { | |
280 | struct se_dev_entry *deve; | |
281 | ||
282 | spin_lock_irq(&nacl->device_list_lock); | |
f2083241 | 283 | deve = nacl->device_list[mapped_lun]; |
c66ac9db NB |
284 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
285 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
286 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
287 | } else { | |
288 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
289 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
290 | } | |
291 | spin_unlock_irq(&nacl->device_list_lock); | |
c66ac9db NB |
292 | } |
293 | ||
e80ac6c4 | 294 | /* core_enable_device_list_for_node(): |
c66ac9db NB |
295 | * |
296 | * | |
297 | */ | |
e80ac6c4 | 298 | int core_enable_device_list_for_node( |
c66ac9db NB |
299 | struct se_lun *lun, |
300 | struct se_lun_acl *lun_acl, | |
301 | u32 mapped_lun, | |
302 | u32 lun_access, | |
303 | struct se_node_acl *nacl, | |
e80ac6c4 | 304 | struct se_portal_group *tpg) |
c66ac9db NB |
305 | { |
306 | struct se_port *port = lun->lun_sep; | |
e80ac6c4 | 307 | struct se_dev_entry *deve; |
c66ac9db NB |
308 | |
309 | spin_lock_irq(&nacl->device_list_lock); | |
e80ac6c4 AG |
310 | |
311 | deve = nacl->device_list[mapped_lun]; | |
312 | ||
313 | /* | |
314 | * Check if the call is handling demo mode -> explict LUN ACL | |
315 | * transition. This transition must be for the same struct se_lun | |
316 | * + mapped_lun that was setup in demo mode.. | |
317 | */ | |
318 | if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { | |
319 | if (deve->se_lun_acl != NULL) { | |
320 | pr_err("struct se_dev_entry->se_lun_acl" | |
321 | " already set for demo mode -> explict" | |
322 | " LUN ACL transition\n"); | |
323 | spin_unlock_irq(&nacl->device_list_lock); | |
324 | return -EINVAL; | |
325 | } | |
326 | if (deve->se_lun != lun) { | |
327 | pr_err("struct se_dev_entry->se_lun does" | |
328 | " match passed struct se_lun for demo mode" | |
329 | " -> explict LUN ACL transition\n"); | |
330 | spin_unlock_irq(&nacl->device_list_lock); | |
331 | return -EINVAL; | |
c66ac9db | 332 | } |
e80ac6c4 | 333 | deve->se_lun_acl = lun_acl; |
c66ac9db NB |
334 | |
335 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
336 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
337 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
338 | } else { | |
339 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
340 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
341 | } | |
342 | ||
c66ac9db | 343 | spin_unlock_irq(&nacl->device_list_lock); |
e80ac6c4 AG |
344 | return 0; |
345 | } | |
c66ac9db | 346 | |
e80ac6c4 AG |
347 | deve->se_lun = lun; |
348 | deve->se_lun_acl = lun_acl; | |
349 | deve->mapped_lun = mapped_lun; | |
350 | deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; | |
c66ac9db | 351 | |
e80ac6c4 AG |
352 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { |
353 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
354 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
355 | } else { | |
356 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
357 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
c66ac9db | 358 | } |
e80ac6c4 AG |
359 | |
360 | deve->creation_time = get_jiffies_64(); | |
361 | deve->attach_count++; | |
362 | spin_unlock_irq(&nacl->device_list_lock); | |
363 | ||
364 | spin_lock_bh(&port->sep_alua_lock); | |
365 | list_add_tail(&deve->alua_port_list, &port->sep_alua_list); | |
366 | spin_unlock_bh(&port->sep_alua_lock); | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
371 | /* core_disable_device_list_for_node(): | |
372 | * | |
373 | * | |
374 | */ | |
375 | int core_disable_device_list_for_node( | |
376 | struct se_lun *lun, | |
377 | struct se_lun_acl *lun_acl, | |
378 | u32 mapped_lun, | |
379 | u32 lun_access, | |
380 | struct se_node_acl *nacl, | |
381 | struct se_portal_group *tpg) | |
382 | { | |
383 | struct se_port *port = lun->lun_sep; | |
77d4c745 | 384 | struct se_dev_entry *deve = nacl->device_list[mapped_lun]; |
e80ac6c4 AG |
385 | |
386 | /* | |
387 | * If the MappedLUN entry is being disabled, the entry in | |
388 | * port->sep_alua_list must be removed now before clearing the | |
389 | * struct se_dev_entry pointers below as logic in | |
390 | * core_alua_do_transition_tg_pt() depends on these being present. | |
391 | * | |
392 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
393 | * that have not been explicitly converted to MappedLUNs -> | |
394 | * struct se_lun_acl, but we remove deve->alua_port_list from | |
395 | * port->sep_alua_list. This also means that active UAs and | |
396 | * NodeACL context specific PR metadata for demo-mode | |
397 | * MappedLUN *deve will be released below.. | |
398 | */ | |
399 | spin_lock_bh(&port->sep_alua_lock); | |
400 | list_del(&deve->alua_port_list); | |
401 | spin_unlock_bh(&port->sep_alua_lock); | |
c66ac9db NB |
402 | /* |
403 | * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE | |
404 | * PR operation to complete. | |
405 | */ | |
c66ac9db NB |
406 | while (atomic_read(&deve->pr_ref_count) != 0) |
407 | cpu_relax(); | |
77d4c745 | 408 | |
c66ac9db NB |
409 | spin_lock_irq(&nacl->device_list_lock); |
410 | /* | |
411 | * Disable struct se_dev_entry LUN ACL mapping | |
412 | */ | |
413 | core_scsi3_ua_release_all(deve); | |
414 | deve->se_lun = NULL; | |
415 | deve->se_lun_acl = NULL; | |
416 | deve->lun_flags = 0; | |
417 | deve->creation_time = 0; | |
418 | deve->attach_count--; | |
419 | spin_unlock_irq(&nacl->device_list_lock); | |
420 | ||
421 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
422 | return 0; | |
423 | } | |
424 | ||
425 | /* core_clear_lun_from_tpg(): | |
426 | * | |
427 | * | |
428 | */ | |
429 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
430 | { | |
431 | struct se_node_acl *nacl; | |
432 | struct se_dev_entry *deve; | |
433 | u32 i; | |
434 | ||
28638887 | 435 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 436 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
28638887 | 437 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
438 | |
439 | spin_lock_irq(&nacl->device_list_lock); | |
440 | for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { | |
f2083241 | 441 | deve = nacl->device_list[i]; |
c66ac9db NB |
442 | if (lun != deve->se_lun) |
443 | continue; | |
444 | spin_unlock_irq(&nacl->device_list_lock); | |
445 | ||
e80ac6c4 | 446 | core_disable_device_list_for_node(lun, NULL, |
c66ac9db | 447 | deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, |
e80ac6c4 | 448 | nacl, tpg); |
c66ac9db NB |
449 | |
450 | spin_lock_irq(&nacl->device_list_lock); | |
451 | } | |
452 | spin_unlock_irq(&nacl->device_list_lock); | |
453 | ||
28638887 | 454 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 455 | } |
28638887 | 456 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
457 | } |
458 | ||
459 | static struct se_port *core_alloc_port(struct se_device *dev) | |
460 | { | |
461 | struct se_port *port, *port_tmp; | |
462 | ||
463 | port = kzalloc(sizeof(struct se_port), GFP_KERNEL); | |
6708bb27 AG |
464 | if (!port) { |
465 | pr_err("Unable to allocate struct se_port\n"); | |
e3d6f909 | 466 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
467 | } |
468 | INIT_LIST_HEAD(&port->sep_alua_list); | |
469 | INIT_LIST_HEAD(&port->sep_list); | |
470 | atomic_set(&port->sep_tg_pt_secondary_offline, 0); | |
471 | spin_lock_init(&port->sep_alua_lock); | |
472 | mutex_init(&port->sep_tg_pt_md_mutex); | |
473 | ||
474 | spin_lock(&dev->se_port_lock); | |
475 | if (dev->dev_port_count == 0x0000ffff) { | |
6708bb27 | 476 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
477 | " 0x0000ffff\n"); |
478 | spin_unlock(&dev->se_port_lock); | |
e3d6f909 | 479 | return ERR_PTR(-ENOSPC); |
c66ac9db NB |
480 | } |
481 | again: | |
482 | /* | |
35d1efe8 | 483 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db NB |
484 | * Here is the table from spc4r17 section 7.7.3.8. |
485 | * | |
486 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
487 | * | |
488 | * Code Description | |
489 | * 0h Reserved | |
490 | * 1h Relative port 1, historically known as port A | |
491 | * 2h Relative port 2, historically known as port B | |
492 | * 3h to FFFFh Relative port 3 through 65 535 | |
493 | */ | |
494 | port->sep_rtpi = dev->dev_rpti_counter++; | |
6708bb27 | 495 | if (!port->sep_rtpi) |
c66ac9db NB |
496 | goto again; |
497 | ||
498 | list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { | |
499 | /* | |
35d1efe8 | 500 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db NB |
501 | * for 16-bit wrap.. |
502 | */ | |
503 | if (port->sep_rtpi == port_tmp->sep_rtpi) | |
504 | goto again; | |
505 | } | |
506 | spin_unlock(&dev->se_port_lock); | |
507 | ||
508 | return port; | |
509 | } | |
510 | ||
511 | static void core_export_port( | |
512 | struct se_device *dev, | |
513 | struct se_portal_group *tpg, | |
514 | struct se_port *port, | |
515 | struct se_lun *lun) | |
516 | { | |
c66ac9db NB |
517 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; |
518 | ||
519 | spin_lock(&dev->se_port_lock); | |
520 | spin_lock(&lun->lun_sep_lock); | |
521 | port->sep_tpg = tpg; | |
522 | port->sep_lun = lun; | |
523 | lun->lun_sep = port; | |
524 | spin_unlock(&lun->lun_sep_lock); | |
525 | ||
526 | list_add_tail(&port->sep_list, &dev->dev_sep_list); | |
527 | spin_unlock(&dev->se_port_lock); | |
528 | ||
c87fbd56 CH |
529 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV && |
530 | !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { | |
c66ac9db NB |
531 | tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); |
532 | if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { | |
6708bb27 | 533 | pr_err("Unable to allocate t10_alua_tg_pt" |
c66ac9db NB |
534 | "_gp_member_t\n"); |
535 | return; | |
536 | } | |
537 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
538 | __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, | |
0fd97ccf | 539 | dev->t10_alua.default_tg_pt_gp); |
c66ac9db | 540 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); |
6708bb27 | 541 | pr_debug("%s/%s: Adding to default ALUA Target Port" |
c66ac9db | 542 | " Group: alua/default_tg_pt_gp\n", |
e3d6f909 | 543 | dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
544 | } |
545 | ||
546 | dev->dev_port_count++; | |
35d1efe8 | 547 | port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ |
c66ac9db NB |
548 | } |
549 | ||
550 | /* | |
551 | * Called with struct se_device->se_port_lock spinlock held. | |
552 | */ | |
553 | static void core_release_port(struct se_device *dev, struct se_port *port) | |
5dd7ed2e | 554 | __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) |
c66ac9db NB |
555 | { |
556 | /* | |
557 | * Wait for any port reference for PR ALL_TG_PT=1 operation | |
558 | * to complete in __core_scsi3_alloc_registration() | |
559 | */ | |
560 | spin_unlock(&dev->se_port_lock); | |
561 | if (atomic_read(&port->sep_tg_pt_ref_cnt)) | |
562 | cpu_relax(); | |
563 | spin_lock(&dev->se_port_lock); | |
564 | ||
565 | core_alua_free_tg_pt_gp_mem(port); | |
566 | ||
567 | list_del(&port->sep_list); | |
568 | dev->dev_port_count--; | |
569 | kfree(port); | |
c66ac9db NB |
570 | } |
571 | ||
572 | int core_dev_export( | |
573 | struct se_device *dev, | |
574 | struct se_portal_group *tpg, | |
575 | struct se_lun *lun) | |
576 | { | |
0fd97ccf | 577 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
578 | struct se_port *port; |
579 | ||
580 | port = core_alloc_port(dev); | |
e3d6f909 AG |
581 | if (IS_ERR(port)) |
582 | return PTR_ERR(port); | |
c66ac9db NB |
583 | |
584 | lun->lun_se_dev = dev; | |
c66ac9db | 585 | |
0fd97ccf CH |
586 | spin_lock(&hba->device_lock); |
587 | dev->export_count++; | |
588 | spin_unlock(&hba->device_lock); | |
589 | ||
c66ac9db NB |
590 | core_export_port(dev, tpg, port, lun); |
591 | return 0; | |
592 | } | |
593 | ||
594 | void core_dev_unexport( | |
595 | struct se_device *dev, | |
596 | struct se_portal_group *tpg, | |
597 | struct se_lun *lun) | |
598 | { | |
0fd97ccf | 599 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
600 | struct se_port *port = lun->lun_sep; |
601 | ||
602 | spin_lock(&lun->lun_sep_lock); | |
603 | if (lun->lun_se_dev == NULL) { | |
604 | spin_unlock(&lun->lun_sep_lock); | |
605 | return; | |
606 | } | |
607 | spin_unlock(&lun->lun_sep_lock); | |
608 | ||
609 | spin_lock(&dev->se_port_lock); | |
c66ac9db NB |
610 | core_release_port(dev, port); |
611 | spin_unlock(&dev->se_port_lock); | |
612 | ||
0fd97ccf CH |
613 | spin_lock(&hba->device_lock); |
614 | dev->export_count--; | |
615 | spin_unlock(&hba->device_lock); | |
616 | ||
c66ac9db NB |
617 | lun->lun_se_dev = NULL; |
618 | } | |
619 | ||
0fd97ccf | 620 | static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db NB |
621 | { |
622 | struct t10_vpd *vpd, *vpd_tmp; | |
623 | ||
0fd97ccf | 624 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 625 | list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf | 626 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
627 | list_del(&vpd->vpd_list); |
628 | kfree(vpd); | |
629 | } | |
0fd97ccf | 630 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
631 | } |
632 | ||
c8045372 | 633 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a2 | 634 | { |
3e03989b RD |
635 | u32 aligned_max_sectors; |
636 | u32 alignment; | |
525a48a2 NB |
637 | /* |
638 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
639 | * transport_allocate_data_tasks() operation. | |
640 | */ | |
3e03989b RD |
641 | alignment = max(1ul, PAGE_SIZE / block_size); |
642 | aligned_max_sectors = rounddown(max_sectors, alignment); | |
643 | ||
644 | if (max_sectors != aligned_max_sectors) | |
645 | pr_info("Rounding down aligned max_sectors from %u to %u\n", | |
646 | max_sectors, aligned_max_sectors); | |
525a48a2 | 647 | |
3e03989b | 648 | return aligned_max_sectors; |
525a48a2 NB |
649 | } |
650 | ||
c66ac9db NB |
651 | int se_dev_set_max_unmap_lba_count( |
652 | struct se_device *dev, | |
653 | u32 max_unmap_lba_count) | |
654 | { | |
0fd97ccf | 655 | dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count; |
6708bb27 | 656 | pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", |
0fd97ccf | 657 | dev, dev->dev_attrib.max_unmap_lba_count); |
c66ac9db NB |
658 | return 0; |
659 | } | |
660 | ||
661 | int se_dev_set_max_unmap_block_desc_count( | |
662 | struct se_device *dev, | |
663 | u32 max_unmap_block_desc_count) | |
664 | { | |
0fd97ccf | 665 | dev->dev_attrib.max_unmap_block_desc_count = |
e3d6f909 | 666 | max_unmap_block_desc_count; |
6708bb27 | 667 | pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", |
0fd97ccf | 668 | dev, dev->dev_attrib.max_unmap_block_desc_count); |
c66ac9db NB |
669 | return 0; |
670 | } | |
671 | ||
672 | int se_dev_set_unmap_granularity( | |
673 | struct se_device *dev, | |
674 | u32 unmap_granularity) | |
675 | { | |
0fd97ccf | 676 | dev->dev_attrib.unmap_granularity = unmap_granularity; |
6708bb27 | 677 | pr_debug("dev[%p]: Set unmap_granularity: %u\n", |
0fd97ccf | 678 | dev, dev->dev_attrib.unmap_granularity); |
c66ac9db NB |
679 | return 0; |
680 | } | |
681 | ||
682 | int se_dev_set_unmap_granularity_alignment( | |
683 | struct se_device *dev, | |
684 | u32 unmap_granularity_alignment) | |
685 | { | |
0fd97ccf | 686 | dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; |
6708bb27 | 687 | pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", |
0fd97ccf | 688 | dev, dev->dev_attrib.unmap_granularity_alignment); |
c66ac9db NB |
689 | return 0; |
690 | } | |
691 | ||
773cbaf7 NB |
692 | int se_dev_set_max_write_same_len( |
693 | struct se_device *dev, | |
694 | u32 max_write_same_len) | |
695 | { | |
696 | dev->dev_attrib.max_write_same_len = max_write_same_len; | |
697 | pr_debug("dev[%p]: Set max_write_same_len: %u\n", | |
698 | dev, dev->dev_attrib.max_write_same_len); | |
699 | return 0; | |
700 | } | |
701 | ||
adfa9570 TB |
702 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) |
703 | { | |
704 | const char *configname; | |
705 | ||
706 | configname = config_item_name(&dev->dev_group.cg_item); | |
707 | if (strlen(configname) >= 16) { | |
708 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
709 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
710 | configname); | |
711 | } | |
712 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
713 | } | |
714 | ||
715 | int se_dev_set_emulate_model_alias(struct se_device *dev, int flag) | |
716 | { | |
717 | if (dev->export_count) { | |
718 | pr_err("dev[%p]: Unable to change model alias" | |
719 | " while export_count is %d\n", | |
720 | dev, dev->export_count); | |
721 | return -EINVAL; | |
722 | } | |
723 | ||
724 | if (flag != 0 && flag != 1) { | |
725 | pr_err("Illegal value %d\n", flag); | |
726 | return -EINVAL; | |
727 | } | |
728 | ||
729 | if (flag) { | |
730 | dev_set_t10_wwn_model_alias(dev); | |
731 | } else { | |
732 | strncpy(&dev->t10_wwn.model[0], | |
733 | dev->transport->inquiry_prod, 16); | |
734 | } | |
735 | dev->dev_attrib.emulate_model_alias = flag; | |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
c66ac9db NB |
740 | int se_dev_set_emulate_dpo(struct se_device *dev, int flag) |
741 | { | |
f55918fa | 742 | if (flag != 0 && flag != 1) { |
6708bb27 | 743 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 744 | return -EINVAL; |
c66ac9db | 745 | } |
f55918fa | 746 | |
c638830d AG |
747 | if (flag) { |
748 | pr_err("dpo_emulated not supported\n"); | |
749 | return -EINVAL; | |
750 | } | |
751 | ||
752 | return 0; | |
c66ac9db NB |
753 | } |
754 | ||
755 | int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) | |
756 | { | |
f55918fa | 757 | if (flag != 0 && flag != 1) { |
6708bb27 | 758 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 759 | return -EINVAL; |
c66ac9db | 760 | } |
f55918fa | 761 | |
fd30e931 NB |
762 | if (flag && |
763 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
764 | pr_err("emulate_fua_write not supported for pSCSI\n"); | |
e3d6f909 | 765 | return -EINVAL; |
c66ac9db | 766 | } |
0fd97ccf | 767 | dev->dev_attrib.emulate_fua_write = flag; |
6708bb27 | 768 | pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", |
0fd97ccf | 769 | dev, dev->dev_attrib.emulate_fua_write); |
c66ac9db NB |
770 | return 0; |
771 | } | |
772 | ||
773 | int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) | |
774 | { | |
f55918fa | 775 | if (flag != 0 && flag != 1) { |
6708bb27 | 776 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 777 | return -EINVAL; |
c66ac9db | 778 | } |
f55918fa | 779 | |
c638830d AG |
780 | if (flag) { |
781 | pr_err("ua read emulated not supported\n"); | |
782 | return -EINVAL; | |
783 | } | |
784 | ||
785 | return 0; | |
c66ac9db NB |
786 | } |
787 | ||
788 | int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) | |
789 | { | |
f55918fa | 790 | if (flag != 0 && flag != 1) { |
6708bb27 | 791 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 792 | return -EINVAL; |
c66ac9db | 793 | } |
fd30e931 NB |
794 | if (flag && |
795 | dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
796 | pr_err("emulate_write_cache not supported for pSCSI\n"); | |
e3d6f909 | 797 | return -EINVAL; |
c66ac9db | 798 | } |
d0c8b259 NB |
799 | if (dev->transport->get_write_cache) { |
800 | pr_warn("emulate_write_cache cannot be changed when underlying" | |
801 | " HW reports WriteCacheEnabled, ignoring request\n"); | |
802 | return 0; | |
803 | } | |
804 | ||
0fd97ccf | 805 | dev->dev_attrib.emulate_write_cache = flag; |
6708bb27 | 806 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", |
0fd97ccf | 807 | dev, dev->dev_attrib.emulate_write_cache); |
c66ac9db NB |
808 | return 0; |
809 | } | |
810 | ||
811 | int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) | |
812 | { | |
813 | if ((flag != 0) && (flag != 1) && (flag != 2)) { | |
6708bb27 | 814 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 815 | return -EINVAL; |
c66ac9db NB |
816 | } |
817 | ||
0fd97ccf | 818 | if (dev->export_count) { |
6708bb27 | 819 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
820 | " UA_INTRLCK_CTRL while export_count is %d\n", |
821 | dev, dev->export_count); | |
e3d6f909 | 822 | return -EINVAL; |
c66ac9db | 823 | } |
0fd97ccf | 824 | dev->dev_attrib.emulate_ua_intlck_ctrl = flag; |
6708bb27 | 825 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", |
0fd97ccf | 826 | dev, dev->dev_attrib.emulate_ua_intlck_ctrl); |
c66ac9db NB |
827 | |
828 | return 0; | |
829 | } | |
830 | ||
831 | int se_dev_set_emulate_tas(struct se_device *dev, int flag) | |
832 | { | |
833 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 834 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 835 | return -EINVAL; |
c66ac9db NB |
836 | } |
837 | ||
0fd97ccf | 838 | if (dev->export_count) { |
6708bb27 | 839 | pr_err("dev[%p]: Unable to change SE Device TAS while" |
0fd97ccf CH |
840 | " export_count is %d\n", |
841 | dev, dev->export_count); | |
e3d6f909 | 842 | return -EINVAL; |
c66ac9db | 843 | } |
0fd97ccf | 844 | dev->dev_attrib.emulate_tas = flag; |
6708bb27 | 845 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", |
0fd97ccf | 846 | dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); |
c66ac9db NB |
847 | |
848 | return 0; | |
849 | } | |
850 | ||
851 | int se_dev_set_emulate_tpu(struct se_device *dev, int flag) | |
852 | { | |
853 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 854 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 855 | return -EINVAL; |
c66ac9db NB |
856 | } |
857 | /* | |
858 | * We expect this value to be non-zero when generic Block Layer | |
859 | * Discard supported is detected iblock_create_virtdevice(). | |
860 | */ | |
0fd97ccf | 861 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 862 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
863 | return -ENOSYS; |
864 | } | |
865 | ||
0fd97ccf | 866 | dev->dev_attrib.emulate_tpu = flag; |
6708bb27 | 867 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", |
c66ac9db NB |
868 | dev, flag); |
869 | return 0; | |
870 | } | |
871 | ||
872 | int se_dev_set_emulate_tpws(struct se_device *dev, int flag) | |
873 | { | |
874 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 875 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 876 | return -EINVAL; |
c66ac9db NB |
877 | } |
878 | /* | |
879 | * We expect this value to be non-zero when generic Block Layer | |
880 | * Discard supported is detected iblock_create_virtdevice(). | |
881 | */ | |
0fd97ccf | 882 | if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { |
6708bb27 | 883 | pr_err("Generic Block Discard not supported\n"); |
c66ac9db NB |
884 | return -ENOSYS; |
885 | } | |
886 | ||
0fd97ccf | 887 | dev->dev_attrib.emulate_tpws = flag; |
6708bb27 | 888 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", |
c66ac9db NB |
889 | dev, flag); |
890 | return 0; | |
891 | } | |
892 | ||
893 | int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) | |
894 | { | |
895 | if ((flag != 0) && (flag != 1)) { | |
6708bb27 | 896 | pr_err("Illegal value %d\n", flag); |
e3d6f909 | 897 | return -EINVAL; |
c66ac9db | 898 | } |
0fd97ccf | 899 | dev->dev_attrib.enforce_pr_isids = flag; |
6708bb27 | 900 | pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, |
0fd97ccf | 901 | (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); |
c66ac9db NB |
902 | return 0; |
903 | } | |
904 | ||
e22a7f07 RD |
905 | int se_dev_set_is_nonrot(struct se_device *dev, int flag) |
906 | { | |
907 | if ((flag != 0) && (flag != 1)) { | |
908 | printk(KERN_ERR "Illegal value %d\n", flag); | |
909 | return -EINVAL; | |
910 | } | |
0fd97ccf | 911 | dev->dev_attrib.is_nonrot = flag; |
5de619a3 | 912 | pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", |
e22a7f07 RD |
913 | dev, flag); |
914 | return 0; | |
915 | } | |
916 | ||
5de619a3 NB |
917 | int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) |
918 | { | |
919 | if (flag != 0) { | |
920 | printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted" | |
921 | " reordering not implemented\n", dev); | |
922 | return -ENOSYS; | |
923 | } | |
0fd97ccf | 924 | dev->dev_attrib.emulate_rest_reord = flag; |
5de619a3 NB |
925 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); |
926 | return 0; | |
927 | } | |
928 | ||
c66ac9db NB |
929 | /* |
930 | * Note, this can only be called on unexported SE Device Object. | |
931 | */ | |
932 | int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) | |
933 | { | |
0fd97ccf | 934 | if (dev->export_count) { |
6708bb27 | 935 | pr_err("dev[%p]: Unable to change SE Device TCQ while" |
0fd97ccf CH |
936 | " export_count is %d\n", |
937 | dev, dev->export_count); | |
e3d6f909 | 938 | return -EINVAL; |
c66ac9db | 939 | } |
6708bb27 AG |
940 | if (!queue_depth) { |
941 | pr_err("dev[%p]: Illegal ZERO value for queue" | |
c66ac9db | 942 | "_depth\n", dev); |
e3d6f909 | 943 | return -EINVAL; |
c66ac9db NB |
944 | } |
945 | ||
e3d6f909 | 946 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
0fd97ccf | 947 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { |
6708bb27 | 948 | pr_err("dev[%p]: Passed queue_depth: %u" |
c66ac9db NB |
949 | " exceeds TCM/SE_Device TCQ: %u\n", |
950 | dev, queue_depth, | |
0fd97ccf | 951 | dev->dev_attrib.hw_queue_depth); |
e3d6f909 | 952 | return -EINVAL; |
c66ac9db NB |
953 | } |
954 | } else { | |
0fd97ccf CH |
955 | if (queue_depth > dev->dev_attrib.queue_depth) { |
956 | if (queue_depth > dev->dev_attrib.hw_queue_depth) { | |
6708bb27 | 957 | pr_err("dev[%p]: Passed queue_depth:" |
c66ac9db NB |
958 | " %u exceeds TCM/SE_Device MAX" |
959 | " TCQ: %u\n", dev, queue_depth, | |
0fd97ccf | 960 | dev->dev_attrib.hw_queue_depth); |
e3d6f909 | 961 | return -EINVAL; |
c66ac9db NB |
962 | } |
963 | } | |
964 | } | |
965 | ||
0fd97ccf | 966 | dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; |
6708bb27 | 967 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", |
c66ac9db NB |
968 | dev, queue_depth); |
969 | return 0; | |
970 | } | |
971 | ||
015487b8 RD |
972 | int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) |
973 | { | |
7a3cf6ca NB |
974 | int block_size = dev->dev_attrib.block_size; |
975 | ||
0fd97ccf | 976 | if (dev->export_count) { |
015487b8 | 977 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
978 | " fabric_max_sectors while export_count is %d\n", |
979 | dev, dev->export_count); | |
015487b8 RD |
980 | return -EINVAL; |
981 | } | |
982 | if (!fabric_max_sectors) { | |
983 | pr_err("dev[%p]: Illegal ZERO value for" | |
984 | " fabric_max_sectors\n", dev); | |
985 | return -EINVAL; | |
986 | } | |
987 | if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { | |
988 | pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" | |
989 | " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, | |
990 | DA_STATUS_MAX_SECTORS_MIN); | |
991 | return -EINVAL; | |
992 | } | |
993 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { | |
0fd97ccf | 994 | if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) { |
015487b8 RD |
995 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" |
996 | " greater than TCM/SE_Device max_sectors:" | |
997 | " %u\n", dev, fabric_max_sectors, | |
0fd97ccf | 998 | dev->dev_attrib.hw_max_sectors); |
015487b8 RD |
999 | return -EINVAL; |
1000 | } | |
1001 | } else { | |
1002 | if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { | |
1003 | pr_err("dev[%p]: Passed fabric_max_sectors: %u" | |
1004 | " greater than DA_STATUS_MAX_SECTORS_MAX:" | |
1005 | " %u\n", dev, fabric_max_sectors, | |
1006 | DA_STATUS_MAX_SECTORS_MAX); | |
1007 | return -EINVAL; | |
1008 | } | |
1009 | } | |
1010 | /* | |
1011 | * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() | |
1012 | */ | |
7a3cf6ca NB |
1013 | if (!block_size) { |
1014 | block_size = 512; | |
1015 | pr_warn("Defaulting to 512 for zero block_size\n"); | |
1016 | } | |
015487b8 | 1017 | fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, |
7a3cf6ca | 1018 | block_size); |
015487b8 | 1019 | |
0fd97ccf | 1020 | dev->dev_attrib.fabric_max_sectors = fabric_max_sectors; |
015487b8 RD |
1021 | pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", |
1022 | dev, fabric_max_sectors); | |
1023 | return 0; | |
1024 | } | |
1025 | ||
c66ac9db NB |
1026 | int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) |
1027 | { | |
0fd97ccf | 1028 | if (dev->export_count) { |
6708bb27 | 1029 | pr_err("dev[%p]: Unable to change SE Device" |
0fd97ccf CH |
1030 | " optimal_sectors while export_count is %d\n", |
1031 | dev, dev->export_count); | |
c66ac9db NB |
1032 | return -EINVAL; |
1033 | } | |
e3d6f909 | 1034 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1035 | pr_err("dev[%p]: Passed optimal_sectors cannot be" |
c66ac9db NB |
1036 | " changed for TCM/pSCSI\n", dev); |
1037 | return -EINVAL; | |
1038 | } | |
0fd97ccf | 1039 | if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { |
6708bb27 | 1040 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" |
015487b8 | 1041 | " greater than fabric_max_sectors: %u\n", dev, |
0fd97ccf | 1042 | optimal_sectors, dev->dev_attrib.fabric_max_sectors); |
c66ac9db NB |
1043 | return -EINVAL; |
1044 | } | |
1045 | ||
0fd97ccf | 1046 | dev->dev_attrib.optimal_sectors = optimal_sectors; |
6708bb27 | 1047 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", |
c66ac9db NB |
1048 | dev, optimal_sectors); |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | int se_dev_set_block_size(struct se_device *dev, u32 block_size) | |
1053 | { | |
0fd97ccf | 1054 | if (dev->export_count) { |
6708bb27 | 1055 | pr_err("dev[%p]: Unable to change SE Device block_size" |
0fd97ccf CH |
1056 | " while export_count is %d\n", |
1057 | dev, dev->export_count); | |
e3d6f909 | 1058 | return -EINVAL; |
c66ac9db NB |
1059 | } |
1060 | ||
1061 | if ((block_size != 512) && | |
1062 | (block_size != 1024) && | |
1063 | (block_size != 2048) && | |
1064 | (block_size != 4096)) { | |
6708bb27 | 1065 | pr_err("dev[%p]: Illegal value for block_device: %u" |
c66ac9db NB |
1066 | " for SE device, must be 512, 1024, 2048 or 4096\n", |
1067 | dev, block_size); | |
e3d6f909 | 1068 | return -EINVAL; |
c66ac9db NB |
1069 | } |
1070 | ||
e3d6f909 | 1071 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { |
6708bb27 | 1072 | pr_err("dev[%p]: Not allowed to change block_size for" |
c66ac9db NB |
1073 | " Physical Device, use for Linux/SCSI to change" |
1074 | " block_size for underlying hardware\n", dev); | |
e3d6f909 | 1075 | return -EINVAL; |
c66ac9db NB |
1076 | } |
1077 | ||
0fd97ccf | 1078 | dev->dev_attrib.block_size = block_size; |
6708bb27 | 1079 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", |
c66ac9db NB |
1080 | dev, block_size); |
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | struct se_lun *core_dev_add_lun( | |
1085 | struct se_portal_group *tpg, | |
c66ac9db NB |
1086 | struct se_device *dev, |
1087 | u32 lun) | |
1088 | { | |
1089 | struct se_lun *lun_p; | |
8d9efe53 | 1090 | int rc; |
c66ac9db | 1091 | |
c66ac9db | 1092 | lun_p = core_tpg_pre_addlun(tpg, lun); |
8d9efe53 SAS |
1093 | if (IS_ERR(lun_p)) |
1094 | return lun_p; | |
c66ac9db | 1095 | |
58d92618 NB |
1096 | rc = core_tpg_post_addlun(tpg, lun_p, |
1097 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); | |
8d9efe53 SAS |
1098 | if (rc < 0) |
1099 | return ERR_PTR(rc); | |
c66ac9db | 1100 | |
6708bb27 | 1101 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 AG |
1102 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1103 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, | |
2dca673b | 1104 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db NB |
1105 | /* |
1106 | * Update LUN maps for dynamically added initiators when | |
1107 | * generate_node_acl is enabled. | |
1108 | */ | |
e3d6f909 | 1109 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 1110 | struct se_node_acl *acl; |
28638887 | 1111 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db | 1112 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
1113 | if (acl->dynamic_node_acl && |
1114 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
1115 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
28638887 | 1116 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db | 1117 | core_tpg_add_node_to_devs(acl, tpg); |
28638887 | 1118 | spin_lock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1119 | } |
1120 | } | |
28638887 | 1121 | spin_unlock_irq(&tpg->acl_node_lock); |
c66ac9db NB |
1122 | } |
1123 | ||
1124 | return lun_p; | |
1125 | } | |
1126 | ||
1127 | /* core_dev_del_lun(): | |
1128 | * | |
1129 | * | |
1130 | */ | |
1131 | int core_dev_del_lun( | |
1132 | struct se_portal_group *tpg, | |
1133 | u32 unpacked_lun) | |
1134 | { | |
1135 | struct se_lun *lun; | |
c66ac9db | 1136 | |
8d9efe53 SAS |
1137 | lun = core_tpg_pre_dellun(tpg, unpacked_lun); |
1138 | if (IS_ERR(lun)) | |
1139 | return PTR_ERR(lun); | |
c66ac9db NB |
1140 | |
1141 | core_tpg_post_dellun(tpg, lun); | |
1142 | ||
6708bb27 | 1143 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" |
e3d6f909 AG |
1144 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
1145 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, | |
1146 | tpg->se_tpg_tfo->get_fabric_name()); | |
c66ac9db NB |
1147 | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) | |
1152 | { | |
1153 | struct se_lun *lun; | |
1154 | ||
1155 | spin_lock(&tpg->tpg_lun_lock); | |
1156 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1157 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" |
c66ac9db | 1158 | "_PER_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1159 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1160 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1161 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1162 | spin_unlock(&tpg->tpg_lun_lock); |
1163 | return NULL; | |
1164 | } | |
4a5a75f3 | 1165 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1166 | |
1167 | if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { | |
6708bb27 | 1168 | pr_err("%s Logical Unit Number: %u is not free on" |
c66ac9db | 1169 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1170 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1171 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1172 | spin_unlock(&tpg->tpg_lun_lock); |
1173 | return NULL; | |
1174 | } | |
1175 | spin_unlock(&tpg->tpg_lun_lock); | |
1176 | ||
1177 | return lun; | |
1178 | } | |
1179 | ||
1180 | /* core_dev_get_lun(): | |
1181 | * | |
1182 | * | |
1183 | */ | |
1184 | static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) | |
1185 | { | |
1186 | struct se_lun *lun; | |
1187 | ||
1188 | spin_lock(&tpg->tpg_lun_lock); | |
1189 | if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { | |
6708bb27 | 1190 | pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" |
c66ac9db | 1191 | "_TPG-1: %u for Target Portal Group: %hu\n", |
e3d6f909 | 1192 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
c66ac9db | 1193 | TRANSPORT_MAX_LUNS_PER_TPG-1, |
e3d6f909 | 1194 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); |
c66ac9db NB |
1195 | spin_unlock(&tpg->tpg_lun_lock); |
1196 | return NULL; | |
1197 | } | |
4a5a75f3 | 1198 | lun = tpg->tpg_lun_list[unpacked_lun]; |
c66ac9db NB |
1199 | |
1200 | if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { | |
6708bb27 | 1201 | pr_err("%s Logical Unit Number: %u is not active on" |
c66ac9db | 1202 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1203 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1204 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1205 | spin_unlock(&tpg->tpg_lun_lock); |
1206 | return NULL; | |
1207 | } | |
1208 | spin_unlock(&tpg->tpg_lun_lock); | |
1209 | ||
1210 | return lun; | |
1211 | } | |
1212 | ||
1213 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( | |
1214 | struct se_portal_group *tpg, | |
fcf29481 | 1215 | struct se_node_acl *nacl, |
c66ac9db | 1216 | u32 mapped_lun, |
c66ac9db NB |
1217 | int *ret) |
1218 | { | |
1219 | struct se_lun_acl *lacl; | |
c66ac9db | 1220 | |
fcf29481 | 1221 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 1222 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 1223 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
1224 | *ret = -EOVERFLOW; |
1225 | return NULL; | |
1226 | } | |
c66ac9db | 1227 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27 AG |
1228 | if (!lacl) { |
1229 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
1230 | *ret = -ENOMEM; |
1231 | return NULL; | |
1232 | } | |
1233 | ||
1234 | INIT_LIST_HEAD(&lacl->lacl_list); | |
1235 | lacl->mapped_lun = mapped_lun; | |
1236 | lacl->se_lun_nacl = nacl; | |
fcf29481 NB |
1237 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
1238 | nacl->initiatorname); | |
c66ac9db NB |
1239 | |
1240 | return lacl; | |
1241 | } | |
1242 | ||
1243 | int core_dev_add_initiator_node_lun_acl( | |
1244 | struct se_portal_group *tpg, | |
1245 | struct se_lun_acl *lacl, | |
1246 | u32 unpacked_lun, | |
1247 | u32 lun_access) | |
1248 | { | |
1249 | struct se_lun *lun; | |
1250 | struct se_node_acl *nacl; | |
1251 | ||
1252 | lun = core_dev_get_lun(tpg, unpacked_lun); | |
6708bb27 AG |
1253 | if (!lun) { |
1254 | pr_err("%s Logical Unit Number: %u is not active on" | |
c66ac9db | 1255 | " Target Portal Group: %hu, ignoring request.\n", |
e3d6f909 AG |
1256 | tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, |
1257 | tpg->se_tpg_tfo->tpg_get_tag(tpg)); | |
c66ac9db NB |
1258 | return -EINVAL; |
1259 | } | |
1260 | ||
1261 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1262 | if (!nacl) |
c66ac9db NB |
1263 | return -EINVAL; |
1264 | ||
1265 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
1266 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
1267 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
1268 | ||
1269 | lacl->se_lun = lun; | |
1270 | ||
e80ac6c4 AG |
1271 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
1272 | lun_access, nacl, tpg) < 0) | |
c66ac9db NB |
1273 | return -EINVAL; |
1274 | ||
1275 | spin_lock(&lun->lun_acl_lock); | |
1276 | list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); | |
1277 | atomic_inc(&lun->lun_acl_count); | |
1278 | smp_mb__after_atomic_inc(); | |
1279 | spin_unlock(&lun->lun_acl_lock); | |
1280 | ||
6708bb27 | 1281 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 AG |
1282 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
1283 | tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, | |
c66ac9db NB |
1284 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
1285 | lacl->initiatorname); | |
1286 | /* | |
1287 | * Check to see if there are any existing persistent reservation APTPL | |
1288 | * pre-registrations that need to be enabled for this LUN ACL.. | |
1289 | */ | |
1290 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); | |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | /* core_dev_del_initiator_node_lun_acl(): | |
1295 | * | |
1296 | * | |
1297 | */ | |
1298 | int core_dev_del_initiator_node_lun_acl( | |
1299 | struct se_portal_group *tpg, | |
1300 | struct se_lun *lun, | |
1301 | struct se_lun_acl *lacl) | |
1302 | { | |
1303 | struct se_node_acl *nacl; | |
1304 | ||
1305 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 1306 | if (!nacl) |
c66ac9db NB |
1307 | return -EINVAL; |
1308 | ||
1309 | spin_lock(&lun->lun_acl_lock); | |
1310 | list_del(&lacl->lacl_list); | |
1311 | atomic_dec(&lun->lun_acl_count); | |
1312 | smp_mb__after_atomic_dec(); | |
1313 | spin_unlock(&lun->lun_acl_lock); | |
1314 | ||
e80ac6c4 AG |
1315 | core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, |
1316 | TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); | |
c66ac9db NB |
1317 | |
1318 | lacl->se_lun = NULL; | |
1319 | ||
6708bb27 | 1320 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 1321 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
1322 | tpg->se_tpg_tfo->get_fabric_name(), |
1323 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
1324 | lacl->initiatorname, lacl->mapped_lun); |
1325 | ||
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | void core_dev_free_initiator_node_lun_acl( | |
1330 | struct se_portal_group *tpg, | |
1331 | struct se_lun_acl *lacl) | |
1332 | { | |
6708bb27 | 1333 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
1334 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
1335 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
1336 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
1337 | lacl->initiatorname, lacl->mapped_lun); |
1338 | ||
1339 | kfree(lacl); | |
1340 | } | |
1341 | ||
0fd97ccf CH |
1342 | static void scsi_dump_inquiry(struct se_device *dev) |
1343 | { | |
1344 | struct t10_wwn *wwn = &dev->t10_wwn; | |
1345 | char buf[17]; | |
1346 | int i, device_type; | |
1347 | /* | |
1348 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer | |
1349 | */ | |
1350 | for (i = 0; i < 8; i++) | |
1351 | if (wwn->vendor[i] >= 0x20) | |
1352 | buf[i] = wwn->vendor[i]; | |
1353 | else | |
1354 | buf[i] = ' '; | |
1355 | buf[i] = '\0'; | |
1356 | pr_debug(" Vendor: %s\n", buf); | |
1357 | ||
1358 | for (i = 0; i < 16; i++) | |
1359 | if (wwn->model[i] >= 0x20) | |
1360 | buf[i] = wwn->model[i]; | |
1361 | else | |
1362 | buf[i] = ' '; | |
1363 | buf[i] = '\0'; | |
1364 | pr_debug(" Model: %s\n", buf); | |
1365 | ||
1366 | for (i = 0; i < 4; i++) | |
1367 | if (wwn->revision[i] >= 0x20) | |
1368 | buf[i] = wwn->revision[i]; | |
1369 | else | |
1370 | buf[i] = ' '; | |
1371 | buf[i] = '\0'; | |
1372 | pr_debug(" Revision: %s\n", buf); | |
1373 | ||
1374 | device_type = dev->transport->get_device_type(dev); | |
1375 | pr_debug(" Type: %s ", scsi_device_type(device_type)); | |
0fd97ccf CH |
1376 | } |
1377 | ||
1378 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |
1379 | { | |
1380 | struct se_device *dev; | |
1381 | ||
1382 | dev = hba->transport->alloc_device(hba, name); | |
1383 | if (!dev) | |
1384 | return NULL; | |
1385 | ||
0ff87549 | 1386 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf CH |
1387 | dev->se_hba = hba; |
1388 | dev->transport = hba->transport; | |
1389 | ||
1390 | INIT_LIST_HEAD(&dev->dev_list); | |
1391 | INIT_LIST_HEAD(&dev->dev_sep_list); | |
1392 | INIT_LIST_HEAD(&dev->dev_tmr_list); | |
1393 | INIT_LIST_HEAD(&dev->delayed_cmd_list); | |
1394 | INIT_LIST_HEAD(&dev->state_list); | |
1395 | INIT_LIST_HEAD(&dev->qf_cmd_list); | |
1396 | spin_lock_init(&dev->stats_lock); | |
1397 | spin_lock_init(&dev->execute_task_lock); | |
1398 | spin_lock_init(&dev->delayed_cmd_lock); | |
1399 | spin_lock_init(&dev->dev_reservation_lock); | |
1400 | spin_lock_init(&dev->se_port_lock); | |
1401 | spin_lock_init(&dev->se_tmr_lock); | |
1402 | spin_lock_init(&dev->qf_cmd_lock); | |
1403 | atomic_set(&dev->dev_ordered_id, 0); | |
1404 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); | |
1405 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); | |
1406 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); | |
1407 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); | |
1408 | spin_lock_init(&dev->t10_pr.registration_lock); | |
1409 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); | |
1410 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); | |
1411 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); | |
1412 | ||
1413 | dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; | |
1414 | dev->t10_wwn.t10_dev = dev; | |
1415 | dev->t10_alua.t10_dev = dev; | |
1416 | ||
1417 | dev->dev_attrib.da_dev = dev; | |
adfa9570 | 1418 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
0fd97ccf CH |
1419 | dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO; |
1420 | dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; | |
1421 | dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; | |
1422 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; | |
1423 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
1424 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
1425 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
1426 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
0fd97ccf CH |
1427 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
1428 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; | |
1429 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | |
1430 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; | |
1431 | dev->dev_attrib.max_unmap_block_desc_count = | |
1432 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
1433 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
1434 | dev->dev_attrib.unmap_granularity_alignment = | |
1435 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; | |
773cbaf7 | 1436 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf CH |
1437 | dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; |
1438 | dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; | |
1439 | ||
0fd97ccf CH |
1440 | return dev; |
1441 | } | |
1442 | ||
1443 | int target_configure_device(struct se_device *dev) | |
1444 | { | |
1445 | struct se_hba *hba = dev->se_hba; | |
1446 | int ret; | |
1447 | ||
1448 | if (dev->dev_flags & DF_CONFIGURED) { | |
1449 | pr_err("se_dev->se_dev_ptr already set for storage" | |
1450 | " object\n"); | |
1451 | return -EEXIST; | |
1452 | } | |
1453 | ||
1454 | ret = dev->transport->configure_device(dev); | |
1455 | if (ret) | |
1456 | goto out; | |
1457 | dev->dev_flags |= DF_CONFIGURED; | |
1458 | ||
1459 | /* | |
1460 | * XXX: there is not much point to have two different values here.. | |
1461 | */ | |
1462 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; | |
1463 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; | |
1464 | ||
1465 | /* | |
1466 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers | |
1467 | */ | |
1468 | dev->dev_attrib.hw_max_sectors = | |
1469 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, | |
1470 | dev->dev_attrib.hw_block_size); | |
1471 | ||
1472 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); | |
1473 | dev->creation_time = get_jiffies_64(); | |
1474 | ||
0fd97ccf CH |
1475 | ret = core_setup_alua(dev); |
1476 | if (ret) | |
1477 | goto out; | |
1478 | ||
1479 | /* | |
1480 | * Startup the struct se_device processing thread | |
1481 | */ | |
1482 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, | |
1483 | dev->transport->name); | |
1484 | if (!dev->tmr_wq) { | |
1485 | pr_err("Unable to create tmr workqueue for %s\n", | |
1486 | dev->transport->name); | |
1487 | ret = -ENOMEM; | |
1488 | goto out_free_alua; | |
1489 | } | |
1490 | ||
1491 | /* | |
1492 | * Setup work_queue for QUEUE_FULL | |
1493 | */ | |
1494 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); | |
1495 | ||
1496 | /* | |
1497 | * Preload the initial INQUIRY const values if we are doing | |
1498 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI | |
1499 | * passthrough because this is being provided by the backend LLD. | |
1500 | */ | |
1501 | if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { | |
1502 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); | |
1503 | strncpy(&dev->t10_wwn.model[0], | |
1504 | dev->transport->inquiry_prod, 16); | |
1505 | strncpy(&dev->t10_wwn.revision[0], | |
1506 | dev->transport->inquiry_rev, 4); | |
1507 | } | |
1508 | ||
1509 | scsi_dump_inquiry(dev); | |
1510 | ||
1511 | spin_lock(&hba->device_lock); | |
1512 | hba->dev_count++; | |
1513 | spin_unlock(&hba->device_lock); | |
1514 | return 0; | |
1515 | ||
1516 | out_free_alua: | |
1517 | core_alua_free_lu_gp_mem(dev); | |
1518 | out: | |
1519 | se_release_vpd_for_dev(dev); | |
1520 | return ret; | |
1521 | } | |
1522 | ||
1523 | void target_free_device(struct se_device *dev) | |
1524 | { | |
1525 | struct se_hba *hba = dev->se_hba; | |
1526 | ||
1527 | WARN_ON(!list_empty(&dev->dev_sep_list)); | |
1528 | ||
1529 | if (dev->dev_flags & DF_CONFIGURED) { | |
1530 | destroy_workqueue(dev->tmr_wq); | |
1531 | ||
1532 | spin_lock(&hba->device_lock); | |
1533 | hba->dev_count--; | |
1534 | spin_unlock(&hba->device_lock); | |
1535 | } | |
1536 | ||
1537 | core_alua_free_lu_gp_mem(dev); | |
1538 | core_scsi3_free_all_registrations(dev); | |
1539 | se_release_vpd_for_dev(dev); | |
1540 | ||
1541 | dev->transport->free_device(dev); | |
1542 | } | |
1543 | ||
c66ac9db NB |
1544 | int core_dev_setup_virtual_lun0(void) |
1545 | { | |
1546 | struct se_hba *hba; | |
1547 | struct se_device *dev; | |
c66ac9db NB |
1548 | char buf[16]; |
1549 | int ret; | |
1550 | ||
6708bb27 | 1551 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
1552 | if (IS_ERR(hba)) |
1553 | return PTR_ERR(hba); | |
1554 | ||
0fd97ccf CH |
1555 | dev = target_alloc_device(hba, "virt_lun0"); |
1556 | if (!dev) { | |
c66ac9db | 1557 | ret = -ENOMEM; |
0fd97ccf | 1558 | goto out_free_hba; |
c66ac9db | 1559 | } |
c66ac9db NB |
1560 | |
1561 | memset(buf, 0, 16); | |
1562 | sprintf(buf, "rd_pages=8"); | |
0fd97ccf | 1563 | hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db | 1564 | |
0fd97ccf CH |
1565 | ret = target_configure_device(dev); |
1566 | if (ret) | |
1567 | goto out_free_se_dev; | |
c66ac9db | 1568 | |
0fd97ccf CH |
1569 | lun0_hba = hba; |
1570 | g_lun0_dev = dev; | |
c66ac9db | 1571 | return 0; |
0fd97ccf CH |
1572 | |
1573 | out_free_se_dev: | |
1574 | target_free_device(dev); | |
1575 | out_free_hba: | |
1576 | core_delete_hba(hba); | |
c66ac9db NB |
1577 | return ret; |
1578 | } | |
1579 | ||
1580 | ||
1581 | void core_dev_release_virtual_lun0(void) | |
1582 | { | |
e3d6f909 | 1583 | struct se_hba *hba = lun0_hba; |
c66ac9db | 1584 | |
6708bb27 | 1585 | if (!hba) |
c66ac9db NB |
1586 | return; |
1587 | ||
e3d6f909 | 1588 | if (g_lun0_dev) |
0fd97ccf | 1589 | target_free_device(g_lun0_dev); |
c66ac9db NB |
1590 | core_delete_hba(hba); |
1591 | } |