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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_tmr.c | |
3 | * | |
4 | * This file contains SPC-3 task management infrastructure | |
5 | * | |
6 | * Copyright (c) 2009,2010 Rising Tide Systems | |
7 | * Copyright (c) 2009,2010 Linux-iSCSI.org | |
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 | ||
c66ac9db NB |
27 | #include <linux/slab.h> |
28 | #include <linux/spinlock.h> | |
29 | #include <linux/list.h> | |
c53181af | 30 | #include <linux/export.h> |
c66ac9db NB |
31 | #include <scsi/scsi.h> |
32 | #include <scsi/scsi_cmnd.h> | |
33 | ||
34 | #include <target/target_core_base.h> | |
c4795fb2 CH |
35 | #include <target/target_core_backend.h> |
36 | #include <target/target_core_fabric.h> | |
c66ac9db NB |
37 | #include <target/target_core_configfs.h> |
38 | ||
e26d99ae | 39 | #include "target_core_internal.h" |
c66ac9db NB |
40 | #include "target_core_alua.h" |
41 | #include "target_core_pr.h" | |
42 | ||
c8e31f26 | 43 | int core_tmr_alloc_req( |
c66ac9db NB |
44 | struct se_cmd *se_cmd, |
45 | void *fabric_tmr_ptr, | |
dd503a5f RD |
46 | u8 function, |
47 | gfp_t gfp_flags) | |
c66ac9db NB |
48 | { |
49 | struct se_tmr_req *tmr; | |
50 | ||
c8e31f26 | 51 | tmr = kzalloc(sizeof(struct se_tmr_req), gfp_flags); |
6708bb27 AG |
52 | if (!tmr) { |
53 | pr_err("Unable to allocate struct se_tmr_req\n"); | |
c8e31f26 | 54 | return -ENOMEM; |
c66ac9db | 55 | } |
c8e31f26 AG |
56 | |
57 | se_cmd->se_cmd_flags |= SCF_SCSI_TMR_CDB; | |
58 | se_cmd->se_tmr_req = tmr; | |
c66ac9db NB |
59 | tmr->task_cmd = se_cmd; |
60 | tmr->fabric_tmr_ptr = fabric_tmr_ptr; | |
61 | tmr->function = function; | |
62 | INIT_LIST_HEAD(&tmr->tmr_list); | |
63 | ||
c8e31f26 | 64 | return 0; |
c66ac9db NB |
65 | } |
66 | EXPORT_SYMBOL(core_tmr_alloc_req); | |
67 | ||
68 | void core_tmr_release_req( | |
69 | struct se_tmr_req *tmr) | |
70 | { | |
71 | struct se_device *dev = tmr->tmr_dev; | |
d050ffb9 | 72 | unsigned long flags; |
c66ac9db | 73 | |
7fd29aa9 | 74 | if (!dev) { |
c8e31f26 | 75 | kfree(tmr); |
7fd29aa9 NB |
76 | return; |
77 | } | |
78 | ||
d050ffb9 | 79 | spin_lock_irqsave(&dev->se_tmr_lock, flags); |
c66ac9db | 80 | list_del(&tmr->tmr_list); |
d050ffb9 | 81 | spin_unlock_irqrestore(&dev->se_tmr_lock, flags); |
7fd29aa9 | 82 | |
c8e31f26 | 83 | kfree(tmr); |
c66ac9db NB |
84 | } |
85 | ||
86 | static void core_tmr_handle_tas_abort( | |
87 | struct se_node_acl *tmr_nacl, | |
88 | struct se_cmd *cmd, | |
89 | int tas, | |
90 | int fe_count) | |
91 | { | |
6708bb27 | 92 | if (!fe_count) { |
c66ac9db NB |
93 | transport_cmd_finish_abort(cmd, 1); |
94 | return; | |
95 | } | |
96 | /* | |
97 | * TASK ABORTED status (TAS) bit support | |
98 | */ | |
6708bb27 | 99 | if ((tmr_nacl && |
c66ac9db NB |
100 | (tmr_nacl == cmd->se_sess->se_node_acl)) || tas) |
101 | transport_send_task_abort(cmd); | |
102 | ||
103 | transport_cmd_finish_abort(cmd, 0); | |
104 | } | |
105 | ||
feae8564 JE |
106 | static int target_check_cdb_and_preempt(struct list_head *list, |
107 | struct se_cmd *cmd) | |
c165f69c | 108 | { |
feae8564 | 109 | struct t10_pr_registration *reg; |
c165f69c | 110 | |
feae8564 JE |
111 | if (!list) |
112 | return 0; | |
113 | list_for_each_entry(reg, list, pr_reg_abort_list) { | |
114 | if (reg->pr_res_key == cmd->pr_res_key) | |
c165f69c JE |
115 | return 0; |
116 | } | |
117 | ||
118 | return 1; | |
119 | } | |
120 | ||
3d28934a NB |
121 | void core_tmr_abort_task( |
122 | struct se_device *dev, | |
123 | struct se_tmr_req *tmr, | |
124 | struct se_session *se_sess) | |
125 | { | |
126 | struct se_cmd *se_cmd, *tmp_cmd; | |
127 | unsigned long flags; | |
128 | int ref_tag; | |
129 | ||
130 | spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); | |
131 | list_for_each_entry_safe(se_cmd, tmp_cmd, | |
132 | &se_sess->sess_cmd_list, se_cmd_list) { | |
133 | ||
134 | if (dev != se_cmd->se_dev) | |
135 | continue; | |
136 | ref_tag = se_cmd->se_tfo->get_task_tag(se_cmd); | |
137 | if (tmr->ref_task_tag != ref_tag) | |
138 | continue; | |
139 | ||
140 | printk("ABORT_TASK: Found referenced %s task_tag: %u\n", | |
141 | se_cmd->se_tfo->get_fabric_name(), ref_tag); | |
142 | ||
143 | spin_lock_irq(&se_cmd->t_state_lock); | |
144 | if (se_cmd->transport_state & CMD_T_COMPLETE) { | |
145 | printk("ABORT_TASK: ref_tag: %u already complete, skipping\n", ref_tag); | |
146 | spin_unlock_irq(&se_cmd->t_state_lock); | |
147 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); | |
148 | goto out; | |
149 | } | |
150 | se_cmd->transport_state |= CMD_T_ABORTED; | |
151 | spin_unlock_irq(&se_cmd->t_state_lock); | |
152 | ||
153 | list_del_init(&se_cmd->se_cmd_list); | |
154 | kref_get(&se_cmd->cmd_kref); | |
155 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); | |
156 | ||
157 | cancel_work_sync(&se_cmd->work); | |
158 | transport_wait_for_tasks(se_cmd); | |
159 | /* | |
160 | * Now send SAM_STAT_TASK_ABORTED status for the referenced | |
161 | * se_cmd descriptor.. | |
162 | */ | |
163 | transport_send_task_abort(se_cmd); | |
164 | /* | |
165 | * Also deal with possible extra acknowledge reference.. | |
166 | */ | |
167 | if (se_cmd->se_cmd_flags & SCF_ACK_KREF) | |
168 | target_put_sess_cmd(se_sess, se_cmd); | |
169 | ||
170 | target_put_sess_cmd(se_sess, se_cmd); | |
171 | ||
172 | printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for" | |
173 | " ref_tag: %d\n", ref_tag); | |
174 | tmr->response = TMR_FUNCTION_COMPLETE; | |
175 | return; | |
176 | } | |
177 | spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); | |
178 | ||
179 | out: | |
180 | printk("ABORT_TASK: Sending TMR_TASK_DOES_NOT_EXIST for ref_tag: %d\n", | |
181 | tmr->ref_task_tag); | |
182 | tmr->response = TMR_TASK_DOES_NOT_EXIST; | |
183 | } | |
184 | ||
d050ffb9 | 185 | static void core_tmr_drain_tmr_list( |
c66ac9db NB |
186 | struct se_device *dev, |
187 | struct se_tmr_req *tmr, | |
d050ffb9 | 188 | struct list_head *preempt_and_abort_list) |
c66ac9db | 189 | { |
d050ffb9 | 190 | LIST_HEAD(drain_tmr_list); |
c66ac9db | 191 | struct se_tmr_req *tmr_p, *tmr_pp; |
d050ffb9 | 192 | struct se_cmd *cmd; |
c66ac9db | 193 | unsigned long flags; |
c66ac9db NB |
194 | /* |
195 | * Release all pending and outgoing TMRs aside from the received | |
196 | * LUN_RESET tmr.. | |
197 | */ | |
d050ffb9 | 198 | spin_lock_irqsave(&dev->se_tmr_lock, flags); |
c66ac9db NB |
199 | list_for_each_entry_safe(tmr_p, tmr_pp, &dev->dev_tmr_list, tmr_list) { |
200 | /* | |
201 | * Allow the received TMR to return with FUNCTION_COMPLETE. | |
202 | */ | |
abc1fd4f | 203 | if (tmr_p == tmr) |
c66ac9db NB |
204 | continue; |
205 | ||
206 | cmd = tmr_p->task_cmd; | |
6708bb27 AG |
207 | if (!cmd) { |
208 | pr_err("Unable to locate struct se_cmd for TMR\n"); | |
c66ac9db NB |
209 | continue; |
210 | } | |
211 | /* | |
212 | * If this function was called with a valid pr_res_key | |
213 | * parameter (eg: for PROUT PREEMPT_AND_ABORT service action | |
214 | * skip non regisration key matching TMRs. | |
215 | */ | |
feae8564 | 216 | if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) |
c66ac9db | 217 | continue; |
c66ac9db | 218 | |
d050ffb9 | 219 | spin_lock(&cmd->t_state_lock); |
7d680f3b | 220 | if (!(cmd->transport_state & CMD_T_ACTIVE)) { |
d050ffb9 | 221 | spin_unlock(&cmd->t_state_lock); |
c66ac9db NB |
222 | continue; |
223 | } | |
224 | if (cmd->t_state == TRANSPORT_ISTATE_PROCESSING) { | |
d050ffb9 | 225 | spin_unlock(&cmd->t_state_lock); |
c66ac9db NB |
226 | continue; |
227 | } | |
d050ffb9 NB |
228 | spin_unlock(&cmd->t_state_lock); |
229 | ||
6eb40b2a | 230 | list_move_tail(&tmr_p->tmr_list, &drain_tmr_list); |
d050ffb9 NB |
231 | } |
232 | spin_unlock_irqrestore(&dev->se_tmr_lock, flags); | |
233 | ||
abc1fd4f | 234 | list_for_each_entry_safe(tmr_p, tmr_pp, &drain_tmr_list, tmr_list) { |
b8a11d73 | 235 | list_del_init(&tmr_p->tmr_list); |
abc1fd4f | 236 | cmd = tmr_p->task_cmd; |
d050ffb9 | 237 | |
6708bb27 | 238 | pr_debug("LUN_RESET: %s releasing TMR %p Function: 0x%02x," |
c66ac9db | 239 | " Response: 0x%02x, t_state: %d\n", |
abc1fd4f JE |
240 | (preempt_and_abort_list) ? "Preempt" : "", tmr_p, |
241 | tmr_p->function, tmr_p->response, cmd->t_state); | |
c66ac9db | 242 | |
8dc52b54 | 243 | transport_cmd_finish_abort(cmd, 1); |
c66ac9db | 244 | } |
d050ffb9 NB |
245 | } |
246 | ||
247 | static void core_tmr_drain_task_list( | |
248 | struct se_device *dev, | |
249 | struct se_cmd *prout_cmd, | |
250 | struct se_node_acl *tmr_nacl, | |
251 | int tas, | |
252 | struct list_head *preempt_and_abort_list) | |
253 | { | |
254 | LIST_HEAD(drain_task_list); | |
255 | struct se_cmd *cmd; | |
256 | struct se_task *task, *task_tmp; | |
257 | unsigned long flags; | |
258 | int fe_count; | |
c66ac9db NB |
259 | /* |
260 | * Complete outstanding struct se_task CDBs with TASK_ABORTED SAM status. | |
261 | * This is following sam4r17, section 5.6 Aborting commands, Table 38 | |
262 | * for TMR LUN_RESET: | |
263 | * | |
264 | * a) "Yes" indicates that each command that is aborted on an I_T nexus | |
265 | * other than the one that caused the SCSI device condition is | |
266 | * completed with TASK ABORTED status, if the TAS bit is set to one in | |
267 | * the Control mode page (see SPC-4). "No" indicates that no status is | |
268 | * returned for aborted commands. | |
269 | * | |
270 | * d) If the logical unit reset is caused by a particular I_T nexus | |
271 | * (e.g., by a LOGICAL UNIT RESET task management function), then "yes" | |
272 | * (TASK_ABORTED status) applies. | |
273 | * | |
274 | * Otherwise (e.g., if triggered by a hard reset), "no" | |
275 | * (no TASK_ABORTED SAM status) applies. | |
276 | * | |
277 | * Note that this seems to be independent of TAS (Task Aborted Status) | |
278 | * in the Control Mode Page. | |
279 | */ | |
280 | spin_lock_irqsave(&dev->execute_task_lock, flags); | |
281 | list_for_each_entry_safe(task, task_tmp, &dev->state_task_list, | |
282 | t_state_list) { | |
e3d6f909 | 283 | if (!task->task_se_cmd) { |
6708bb27 | 284 | pr_err("task->task_se_cmd is NULL!\n"); |
c66ac9db NB |
285 | continue; |
286 | } | |
e3d6f909 | 287 | cmd = task->task_se_cmd; |
c66ac9db | 288 | |
c66ac9db NB |
289 | /* |
290 | * For PREEMPT_AND_ABORT usage, only process commands | |
291 | * with a matching reservation key. | |
292 | */ | |
feae8564 | 293 | if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) |
c66ac9db NB |
294 | continue; |
295 | /* | |
296 | * Not aborting PROUT PREEMPT_AND_ABORT CDB.. | |
297 | */ | |
298 | if (prout_cmd == cmd) | |
299 | continue; | |
300 | ||
d050ffb9 | 301 | list_move_tail(&task->t_state_list, &drain_task_list); |
1880807a | 302 | task->t_state_active = false; |
d050ffb9 NB |
303 | /* |
304 | * Remove from task execute list before processing drain_task_list | |
305 | */ | |
04629b7b CH |
306 | if (!list_empty(&task->t_execute_list)) |
307 | __transport_remove_task_from_execute_queue(task, dev); | |
d050ffb9 NB |
308 | } |
309 | spin_unlock_irqrestore(&dev->execute_task_lock, flags); | |
310 | ||
311 | while (!list_empty(&drain_task_list)) { | |
312 | task = list_entry(drain_task_list.next, struct se_task, t_state_list); | |
313 | list_del(&task->t_state_list); | |
314 | cmd = task->task_se_cmd; | |
c66ac9db | 315 | |
6708bb27 | 316 | pr_debug("LUN_RESET: %s cmd: %p task: %p" |
f2da9dbd CH |
317 | " ITT/CmdSN: 0x%08x/0x%08x, i_state: %d, t_state: %d" |
318 | "cdb: 0x%02x\n", | |
c66ac9db | 319 | (preempt_and_abort_list) ? "Preempt" : "", cmd, task, |
e3d6f909 AG |
320 | cmd->se_tfo->get_task_tag(cmd), 0, |
321 | cmd->se_tfo->get_cmd_state(cmd), cmd->t_state, | |
f2da9dbd | 322 | cmd->t_task_cdb[0]); |
6708bb27 | 323 | pr_debug("LUN_RESET: ITT[0x%08x] - pr_res_key: 0x%016Lx" |
785fdf70 CH |
324 | " t_task_cdbs_left: %d" |
325 | " -- CMD_T_ACTIVE: %d" | |
7d680f3b | 326 | " CMD_T_STOP: %d CMD_T_SENT: %d\n", |
e3d6f909 | 327 | cmd->se_tfo->get_task_tag(cmd), cmd->pr_res_key, |
a1d8b49a | 328 | atomic_read(&cmd->t_task_cdbs_left), |
7d680f3b CH |
329 | (cmd->transport_state & CMD_T_ACTIVE) != 0, |
330 | (cmd->transport_state & CMD_T_STOP) != 0, | |
331 | (cmd->transport_state & CMD_T_SENT) != 0); | |
c66ac9db | 332 | |
35e0e757 CH |
333 | /* |
334 | * If the command may be queued onto a workqueue cancel it now. | |
335 | * | |
336 | * This is equivalent to removal from the execute queue in the | |
337 | * loop above, but we do it down here given that | |
338 | * cancel_work_sync may block. | |
339 | */ | |
340 | if (cmd->t_state == TRANSPORT_COMPLETE) | |
341 | cancel_work_sync(&cmd->work); | |
342 | ||
cdbb70bb CH |
343 | spin_lock_irqsave(&cmd->t_state_lock, flags); |
344 | target_stop_task(task, &flags); | |
c66ac9db | 345 | |
6708bb27 | 346 | if (!atomic_dec_and_test(&cmd->t_task_cdbs_ex_left)) { |
d050ffb9 | 347 | spin_unlock_irqrestore(&cmd->t_state_lock, flags); |
6708bb27 | 348 | pr_debug("LUN_RESET: Skipping task: %p, dev: %p for" |
c66ac9db | 349 | " t_task_cdbs_ex_left: %d\n", task, dev, |
a1d8b49a | 350 | atomic_read(&cmd->t_task_cdbs_ex_left)); |
c66ac9db NB |
351 | continue; |
352 | } | |
a1d8b49a | 353 | fe_count = atomic_read(&cmd->t_fe_count); |
c66ac9db | 354 | |
7d680f3b CH |
355 | if (!(cmd->transport_state & CMD_T_ACTIVE)) { |
356 | pr_debug("LUN_RESET: got CMD_T_ACTIVE for" | |
c66ac9db NB |
357 | " task: %p, t_fe_count: %d dev: %p\n", task, |
358 | fe_count, dev); | |
7d680f3b | 359 | cmd->transport_state |= CMD_T_ABORTED; |
d050ffb9 | 360 | spin_unlock_irqrestore(&cmd->t_state_lock, flags); |
c66ac9db | 361 | |
d050ffb9 | 362 | core_tmr_handle_tas_abort(tmr_nacl, cmd, tas, fe_count); |
c66ac9db NB |
363 | continue; |
364 | } | |
7d680f3b | 365 | pr_debug("LUN_RESET: Got !CMD_T_ACTIVE for task: %p," |
c66ac9db | 366 | " t_fe_count: %d dev: %p\n", task, fe_count, dev); |
7d680f3b | 367 | cmd->transport_state |= CMD_T_ABORTED; |
a1d8b49a | 368 | spin_unlock_irqrestore(&cmd->t_state_lock, flags); |
c66ac9db | 369 | |
d050ffb9 | 370 | core_tmr_handle_tas_abort(tmr_nacl, cmd, tas, fe_count); |
c66ac9db | 371 | } |
d050ffb9 NB |
372 | } |
373 | ||
374 | static void core_tmr_drain_cmd_list( | |
375 | struct se_device *dev, | |
376 | struct se_cmd *prout_cmd, | |
377 | struct se_node_acl *tmr_nacl, | |
378 | int tas, | |
379 | struct list_head *preempt_and_abort_list) | |
380 | { | |
381 | LIST_HEAD(drain_cmd_list); | |
382 | struct se_queue_obj *qobj = &dev->dev_queue_obj; | |
383 | struct se_cmd *cmd, *tcmd; | |
384 | unsigned long flags; | |
c66ac9db NB |
385 | /* |
386 | * Release all commands remaining in the struct se_device cmd queue. | |
387 | * | |
388 | * This follows the same logic as above for the struct se_device | |
389 | * struct se_task state list, where commands are returned with | |
390 | * TASK_ABORTED status, if there is an outstanding $FABRIC_MOD | |
391 | * reference, otherwise the struct se_cmd is released. | |
392 | */ | |
393 | spin_lock_irqsave(&qobj->cmd_queue_lock, flags); | |
5951146d | 394 | list_for_each_entry_safe(cmd, tcmd, &qobj->qobj_list, se_queue_node) { |
c66ac9db NB |
395 | /* |
396 | * For PREEMPT_AND_ABORT usage, only process commands | |
397 | * with a matching reservation key. | |
398 | */ | |
feae8564 | 399 | if (target_check_cdb_and_preempt(preempt_and_abort_list, cmd)) |
c66ac9db NB |
400 | continue; |
401 | /* | |
402 | * Not aborting PROUT PREEMPT_AND_ABORT CDB.. | |
403 | */ | |
404 | if (prout_cmd == cmd) | |
405 | continue; | |
406 | ||
7d680f3b | 407 | cmd->transport_state &= ~CMD_T_QUEUED; |
c66ac9db | 408 | atomic_dec(&qobj->queue_cnt); |
d050ffb9 NB |
409 | list_move_tail(&cmd->se_queue_node, &drain_cmd_list); |
410 | } | |
411 | spin_unlock_irqrestore(&qobj->cmd_queue_lock, flags); | |
412 | ||
413 | while (!list_empty(&drain_cmd_list)) { | |
414 | cmd = list_entry(drain_cmd_list.next, struct se_cmd, se_queue_node); | |
79a7fef2 | 415 | list_del_init(&cmd->se_queue_node); |
c66ac9db | 416 | |
6708bb27 | 417 | pr_debug("LUN_RESET: %s from Device Queue: cmd: %p t_state:" |
c66ac9db | 418 | " %d t_fe_count: %d\n", (preempt_and_abort_list) ? |
5951146d | 419 | "Preempt" : "", cmd, cmd->t_state, |
a1d8b49a | 420 | atomic_read(&cmd->t_fe_count)); |
c66ac9db NB |
421 | |
422 | core_tmr_handle_tas_abort(tmr_nacl, cmd, tas, | |
a1d8b49a | 423 | atomic_read(&cmd->t_fe_count)); |
c66ac9db | 424 | } |
d050ffb9 NB |
425 | } |
426 | ||
427 | int core_tmr_lun_reset( | |
428 | struct se_device *dev, | |
429 | struct se_tmr_req *tmr, | |
430 | struct list_head *preempt_and_abort_list, | |
431 | struct se_cmd *prout_cmd) | |
432 | { | |
433 | struct se_node_acl *tmr_nacl = NULL; | |
434 | struct se_portal_group *tmr_tpg = NULL; | |
435 | int tas; | |
436 | /* | |
437 | * TASK_ABORTED status bit, this is configurable via ConfigFS | |
438 | * struct se_device attributes. spc4r17 section 7.4.6 Control mode page | |
439 | * | |
440 | * A task aborted status (TAS) bit set to zero specifies that aborted | |
441 | * tasks shall be terminated by the device server without any response | |
442 | * to the application client. A TAS bit set to one specifies that tasks | |
443 | * aborted by the actions of an I_T nexus other than the I_T nexus on | |
444 | * which the command was received shall be completed with TASK ABORTED | |
445 | * status (see SAM-4). | |
446 | */ | |
447 | tas = dev->se_sub_dev->se_dev_attrib.emulate_tas; | |
448 | /* | |
449 | * Determine if this se_tmr is coming from a $FABRIC_MOD | |
450 | * or struct se_device passthrough.. | |
451 | */ | |
452 | if (tmr && tmr->task_cmd && tmr->task_cmd->se_sess) { | |
453 | tmr_nacl = tmr->task_cmd->se_sess->se_node_acl; | |
454 | tmr_tpg = tmr->task_cmd->se_sess->se_tpg; | |
455 | if (tmr_nacl && tmr_tpg) { | |
456 | pr_debug("LUN_RESET: TMR caller fabric: %s" | |
457 | " initiator port %s\n", | |
458 | tmr_tpg->se_tpg_tfo->get_fabric_name(), | |
459 | tmr_nacl->initiatorname); | |
460 | } | |
461 | } | |
462 | pr_debug("LUN_RESET: %s starting for [%s], tas: %d\n", | |
463 | (preempt_and_abort_list) ? "Preempt" : "TMR", | |
464 | dev->transport->name, tas); | |
465 | ||
466 | core_tmr_drain_tmr_list(dev, tmr, preempt_and_abort_list); | |
467 | core_tmr_drain_task_list(dev, prout_cmd, tmr_nacl, tas, | |
468 | preempt_and_abort_list); | |
469 | core_tmr_drain_cmd_list(dev, prout_cmd, tmr_nacl, tas, | |
470 | preempt_and_abort_list); | |
c66ac9db NB |
471 | /* |
472 | * Clear any legacy SPC-2 reservation when called during | |
473 | * LOGICAL UNIT RESET | |
474 | */ | |
6708bb27 | 475 | if (!preempt_and_abort_list && |
c66ac9db NB |
476 | (dev->dev_flags & DF_SPC2_RESERVATIONS)) { |
477 | spin_lock(&dev->dev_reservation_lock); | |
478 | dev->dev_reserved_node_acl = NULL; | |
479 | dev->dev_flags &= ~DF_SPC2_RESERVATIONS; | |
480 | spin_unlock(&dev->dev_reservation_lock); | |
6708bb27 | 481 | pr_debug("LUN_RESET: SCSI-2 Released reservation\n"); |
c66ac9db NB |
482 | } |
483 | ||
1e7de68c | 484 | spin_lock_irq(&dev->stats_lock); |
c66ac9db | 485 | dev->num_resets++; |
1e7de68c | 486 | spin_unlock_irq(&dev->stats_lock); |
c66ac9db | 487 | |
6708bb27 | 488 | pr_debug("LUN_RESET: %s for [%s] Complete\n", |
c66ac9db | 489 | (preempt_and_abort_list) ? "Preempt" : "TMR", |
e3d6f909 | 490 | dev->transport->name); |
c66ac9db NB |
491 | return 0; |
492 | } | |
d050ffb9 | 493 |