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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> |
7bfea53b | 36 | #include <asm/unaligned.h> |
c66ac9db NB |
37 | #include <net/sock.h> |
38 | #include <net/tcp.h> | |
39 | #include <scsi/scsi.h> | |
1078da16 | 40 | #include <scsi/scsi_device.h> |
c66ac9db NB |
41 | |
42 | #include <target/target_core_base.h> | |
c4795fb2 CH |
43 | #include <target/target_core_backend.h> |
44 | #include <target/target_core_fabric.h> | |
c66ac9db | 45 | |
e26d99ae | 46 | #include "target_core_internal.h" |
c66ac9db | 47 | #include "target_core_alua.h" |
c66ac9db NB |
48 | #include "target_core_pr.h" |
49 | #include "target_core_ua.h" | |
50 | ||
d9ea32bf NB |
51 | DEFINE_MUTEX(g_device_mutex); |
52 | LIST_HEAD(g_device_list); | |
53 | ||
e3d6f909 | 54 | static struct se_hba *lun0_hba; |
e3d6f909 AG |
55 | /* not static, needed by tpg.c */ |
56 | struct se_device *g_lun0_dev; | |
57 | ||
de103c93 CH |
58 | sense_reason_t |
59 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) | |
c66ac9db | 60 | { |
c66ac9db | 61 | struct se_lun *se_lun = NULL; |
e3d6f909 | 62 | struct se_session *se_sess = se_cmd->se_sess; |
29a05dee | 63 | struct se_node_acl *nacl = se_sess->se_node_acl; |
5951146d | 64 | struct se_device *dev; |
29a05dee | 65 | struct se_dev_entry *deve; |
c66ac9db | 66 | |
de103c93 CH |
67 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
68 | return TCM_NON_EXISTENT_LUN; | |
d8144955 | 69 | |
29a05dee NB |
70 | rcu_read_lock(); |
71 | deve = target_nacl_find_deve(nacl, unpacked_lun); | |
72 | if (deve) { | |
73 | atomic_long_inc(&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); | |
29a05dee | 81 | rcu_read_unlock(); |
de103c93 | 82 | return TCM_WRITE_PROTECTED; |
c66ac9db | 83 | } |
5951146d AG |
84 | |
85 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
29a05dee NB |
86 | atomic_long_add(se_cmd->data_length, |
87 | &deve->write_bytes); | |
5951146d | 88 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
29a05dee NB |
89 | atomic_long_add(se_cmd->data_length, |
90 | &deve->read_bytes); | |
5951146d | 91 | |
29a05dee NB |
92 | se_lun = rcu_dereference(deve->se_lun); |
93 | se_cmd->se_lun = rcu_dereference(deve->se_lun); | |
c66ac9db NB |
94 | se_cmd->pr_res_key = deve->pr_res_key; |
95 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 96 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
97 | |
98 | percpu_ref_get(&se_lun->lun_ref); | |
99 | se_cmd->lun_ref_active = true; | |
c66ac9db | 100 | } |
29a05dee | 101 | rcu_read_unlock(); |
c66ac9db NB |
102 | |
103 | if (!se_lun) { | |
5951146d AG |
104 | /* |
105 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
106 | * REPORT_LUNS, et al to be returned when no active | |
107 | * MappedLUN=0 exists for this Initiator Port. | |
108 | */ | |
109 | if (unpacked_lun != 0) { | |
6708bb27 | 110 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
c66ac9db | 111 | " Access for 0x%08x\n", |
e3d6f909 | 112 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 113 | unpacked_lun); |
de103c93 | 114 | return TCM_NON_EXISTENT_LUN; |
5951146d AG |
115 | } |
116 | /* | |
117 | * Force WRITE PROTECT for virtual LUN 0 | |
118 | */ | |
119 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
de103c93 CH |
120 | (se_cmd->data_direction != DMA_NONE)) |
121 | return TCM_WRITE_PROTECTED; | |
5951146d | 122 | |
adf653f9 CH |
123 | se_lun = se_sess->se_tpg->tpg_virt_lun0; |
124 | se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; | |
5951146d | 125 | se_cmd->orig_fe_lun = 0; |
5951146d | 126 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
127 | |
128 | percpu_ref_get(&se_lun->lun_ref); | |
129 | se_cmd->lun_ref_active = true; | |
c66ac9db | 130 | } |
c66ac9db | 131 | |
5951146d AG |
132 | /* Directly associate cmd with se_dev */ |
133 | se_cmd->se_dev = se_lun->lun_se_dev; | |
134 | ||
5951146d | 135 | dev = se_lun->lun_se_dev; |
ee480683 | 136 | atomic_long_inc(&dev->num_cmds); |
c66ac9db | 137 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
ee480683 | 138 | atomic_long_add(se_cmd->data_length, &dev->write_bytes); |
c66ac9db | 139 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
ee480683 | 140 | atomic_long_add(se_cmd->data_length, &dev->read_bytes); |
c66ac9db | 141 | |
c66ac9db NB |
142 | return 0; |
143 | } | |
5951146d | 144 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 145 | |
5951146d | 146 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) |
c66ac9db | 147 | { |
c66ac9db NB |
148 | struct se_dev_entry *deve; |
149 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 150 | struct se_session *se_sess = se_cmd->se_sess; |
29a05dee | 151 | struct se_node_acl *nacl = se_sess->se_node_acl; |
c66ac9db | 152 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 153 | unsigned long flags; |
c66ac9db | 154 | |
de103c93 | 155 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
e3d6f909 | 156 | return -ENODEV; |
d8144955 | 157 | |
29a05dee NB |
158 | rcu_read_lock(); |
159 | deve = target_nacl_find_deve(nacl, unpacked_lun); | |
160 | if (deve) { | |
161 | se_tmr->tmr_lun = rcu_dereference(deve->se_lun); | |
162 | se_cmd->se_lun = rcu_dereference(deve->se_lun); | |
163 | se_lun = rcu_dereference(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 | } |
29a05dee | 167 | rcu_read_unlock(); |
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 | 188 | |
29a05dee NB |
189 | bool target_lun_is_rdonly(struct se_cmd *cmd) |
190 | { | |
191 | struct se_session *se_sess = cmd->se_sess; | |
192 | struct se_dev_entry *deve; | |
193 | bool ret; | |
194 | ||
195 | if (cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) | |
196 | return true; | |
197 | ||
198 | rcu_read_lock(); | |
199 | deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); | |
200 | ret = (deve && deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY); | |
201 | rcu_read_unlock(); | |
202 | ||
203 | return ret; | |
204 | } | |
205 | EXPORT_SYMBOL(target_lun_is_rdonly); | |
206 | ||
c66ac9db NB |
207 | /* |
208 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
29a05dee | 209 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_kref |
c66ac9db NB |
210 | * when a matching rtpi is found. |
211 | */ | |
212 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
213 | struct se_node_acl *nacl, | |
214 | u16 rtpi) | |
215 | { | |
216 | struct se_dev_entry *deve; | |
217 | struct se_lun *lun; | |
c66ac9db | 218 | struct se_portal_group *tpg = nacl->se_tpg; |
c66ac9db | 219 | |
29a05dee NB |
220 | rcu_read_lock(); |
221 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
222 | lun = rcu_dereference(deve->se_lun); | |
6708bb27 AG |
223 | if (!lun) { |
224 | pr_err("%s device entries device pointer is" | |
c66ac9db | 225 | " NULL, but Initiator has access.\n", |
e3d6f909 | 226 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
227 | continue; |
228 | } | |
29a05dee | 229 | if (lun->lun_rtpi != rtpi) |
c66ac9db NB |
230 | continue; |
231 | ||
29a05dee NB |
232 | kref_get(&deve->pr_kref); |
233 | rcu_read_unlock(); | |
c66ac9db NB |
234 | |
235 | return deve; | |
236 | } | |
29a05dee | 237 | rcu_read_unlock(); |
c66ac9db NB |
238 | |
239 | return NULL; | |
240 | } | |
241 | ||
29a05dee | 242 | void core_free_device_list_for_node( |
c66ac9db NB |
243 | struct se_node_acl *nacl, |
244 | struct se_portal_group *tpg) | |
245 | { | |
246 | struct se_dev_entry *deve; | |
c66ac9db | 247 | |
29a05dee NB |
248 | mutex_lock(&nacl->lun_entry_mutex); |
249 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
250 | struct se_lun *lun = rcu_dereference_check(deve->se_lun, | |
251 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
252 | core_disable_device_list_for_node(lun, deve, nacl, tpg); | |
c66ac9db | 253 | } |
29a05dee | 254 | mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db NB |
255 | } |
256 | ||
c66ac9db NB |
257 | void core_update_device_list_access( |
258 | u32 mapped_lun, | |
259 | u32 lun_access, | |
260 | struct se_node_acl *nacl) | |
261 | { | |
262 | struct se_dev_entry *deve; | |
263 | ||
29a05dee NB |
264 | mutex_lock(&nacl->lun_entry_mutex); |
265 | deve = target_nacl_find_deve(nacl, mapped_lun); | |
266 | if (deve) { | |
267 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
268 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
269 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
270 | } else { | |
271 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
272 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
273 | } | |
c66ac9db | 274 | } |
29a05dee NB |
275 | mutex_unlock(&nacl->lun_entry_mutex); |
276 | } | |
277 | ||
278 | /* | |
279 | * Called with rcu_read_lock or nacl->device_list_lock held. | |
280 | */ | |
281 | struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u32 mapped_lun) | |
282 | { | |
283 | struct se_dev_entry *deve; | |
284 | ||
285 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) | |
286 | if (deve->mapped_lun == mapped_lun) | |
287 | return deve; | |
288 | ||
289 | return NULL; | |
290 | } | |
291 | EXPORT_SYMBOL(target_nacl_find_deve); | |
292 | ||
293 | void target_pr_kref_release(struct kref *kref) | |
294 | { | |
295 | struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, | |
296 | pr_kref); | |
297 | complete(&deve->pr_comp); | |
c66ac9db NB |
298 | } |
299 | ||
e80ac6c4 | 300 | /* core_enable_device_list_for_node(): |
c66ac9db NB |
301 | * |
302 | * | |
303 | */ | |
e80ac6c4 | 304 | int core_enable_device_list_for_node( |
c66ac9db NB |
305 | struct se_lun *lun, |
306 | struct se_lun_acl *lun_acl, | |
307 | u32 mapped_lun, | |
308 | u32 lun_access, | |
309 | struct se_node_acl *nacl, | |
e80ac6c4 | 310 | struct se_portal_group *tpg) |
c66ac9db | 311 | { |
29a05dee NB |
312 | struct se_dev_entry *orig, *new; |
313 | ||
314 | new = kzalloc(sizeof(*new), GFP_KERNEL); | |
315 | if (!new) { | |
316 | pr_err("Unable to allocate se_dev_entry memory\n"); | |
317 | return -ENOMEM; | |
318 | } | |
319 | ||
320 | atomic_set(&new->ua_count, 0); | |
321 | spin_lock_init(&new->ua_lock); | |
29a05dee | 322 | INIT_LIST_HEAD(&new->ua_list); |
adf653f9 | 323 | INIT_LIST_HEAD(&new->lun_link); |
29a05dee NB |
324 | |
325 | new->mapped_lun = mapped_lun; | |
326 | kref_init(&new->pr_kref); | |
327 | init_completion(&new->pr_comp); | |
328 | ||
329 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) | |
330 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
331 | else | |
332 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
333 | ||
334 | new->creation_time = get_jiffies_64(); | |
335 | new->attach_count++; | |
336 | ||
337 | mutex_lock(&nacl->lun_entry_mutex); | |
338 | orig = target_nacl_find_deve(nacl, mapped_lun); | |
339 | if (orig && orig->se_lun) { | |
340 | struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, | |
341 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
342 | ||
343 | if (orig_lun != lun) { | |
344 | pr_err("Existing orig->se_lun doesn't match new lun" | |
345 | " for dynamic -> explicit NodeACL conversion:" | |
346 | " %s\n", nacl->initiatorname); | |
347 | mutex_unlock(&nacl->lun_entry_mutex); | |
348 | kfree(new); | |
e80ac6c4 | 349 | return -EINVAL; |
c66ac9db | 350 | } |
29a05dee | 351 | BUG_ON(orig->se_lun_acl != NULL); |
c66ac9db | 352 | |
29a05dee NB |
353 | rcu_assign_pointer(new->se_lun, lun); |
354 | rcu_assign_pointer(new->se_lun_acl, lun_acl); | |
355 | hlist_del_rcu(&orig->link); | |
356 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); | |
357 | mutex_unlock(&nacl->lun_entry_mutex); | |
c66ac9db | 358 | |
adf653f9 CH |
359 | spin_lock_bh(&lun->lun_deve_lock); |
360 | list_del(&orig->lun_link); | |
361 | list_add_tail(&new->lun_link, &lun->lun_deve_list); | |
362 | spin_unlock_bh(&lun->lun_deve_lock); | |
c66ac9db | 363 | |
29a05dee NB |
364 | kref_put(&orig->pr_kref, target_pr_kref_release); |
365 | wait_for_completion(&orig->pr_comp); | |
c66ac9db | 366 | |
29a05dee NB |
367 | kfree_rcu(orig, rcu_head); |
368 | return 0; | |
c66ac9db | 369 | } |
e80ac6c4 | 370 | |
29a05dee NB |
371 | rcu_assign_pointer(new->se_lun, lun); |
372 | rcu_assign_pointer(new->se_lun_acl, lun_acl); | |
373 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); | |
374 | mutex_unlock(&nacl->lun_entry_mutex); | |
e80ac6c4 | 375 | |
adf653f9 CH |
376 | spin_lock_bh(&lun->lun_deve_lock); |
377 | list_add_tail(&new->lun_link, &lun->lun_deve_list); | |
378 | spin_unlock_bh(&lun->lun_deve_lock); | |
e80ac6c4 AG |
379 | |
380 | return 0; | |
381 | } | |
382 | ||
29a05dee NB |
383 | /* |
384 | * Called with se_node_acl->lun_entry_mutex held. | |
e80ac6c4 | 385 | */ |
29a05dee | 386 | void core_disable_device_list_for_node( |
e80ac6c4 | 387 | struct se_lun *lun, |
29a05dee | 388 | struct se_dev_entry *orig, |
e80ac6c4 AG |
389 | struct se_node_acl *nacl, |
390 | struct se_portal_group *tpg) | |
391 | { | |
e80ac6c4 AG |
392 | /* |
393 | * If the MappedLUN entry is being disabled, the entry in | |
adf653f9 | 394 | * lun->lun_deve_list must be removed now before clearing the |
e80ac6c4 AG |
395 | * struct se_dev_entry pointers below as logic in |
396 | * core_alua_do_transition_tg_pt() depends on these being present. | |
397 | * | |
398 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
399 | * that have not been explicitly converted to MappedLUNs -> | |
adf653f9 CH |
400 | * struct se_lun_acl, but we remove deve->lun_link from |
401 | * lun->lun_deve_list. This also means that active UAs and | |
e80ac6c4 AG |
402 | * NodeACL context specific PR metadata for demo-mode |
403 | * MappedLUN *deve will be released below.. | |
404 | */ | |
adf653f9 CH |
405 | spin_lock_bh(&lun->lun_deve_lock); |
406 | list_del(&orig->lun_link); | |
407 | spin_unlock_bh(&lun->lun_deve_lock); | |
c66ac9db | 408 | /* |
29a05dee | 409 | * Disable struct se_dev_entry LUN ACL mapping |
c66ac9db | 410 | */ |
29a05dee NB |
411 | core_scsi3_ua_release_all(orig); |
412 | ||
413 | hlist_del_rcu(&orig->link); | |
80bfdfa9 | 414 | clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
29a05dee NB |
415 | rcu_assign_pointer(orig->se_lun, NULL); |
416 | rcu_assign_pointer(orig->se_lun_acl, NULL); | |
417 | orig->lun_flags = 0; | |
418 | orig->creation_time = 0; | |
419 | orig->attach_count--; | |
c66ac9db | 420 | /* |
29a05dee NB |
421 | * Before firing off RCU callback, wait for any in process SPEC_I_PT=1 |
422 | * or REGISTER_AND_MOVE PR operation to complete. | |
c66ac9db | 423 | */ |
29a05dee NB |
424 | kref_put(&orig->pr_kref, target_pr_kref_release); |
425 | wait_for_completion(&orig->pr_comp); | |
426 | ||
427 | kfree_rcu(orig, rcu_head); | |
c66ac9db NB |
428 | |
429 | core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); | |
c66ac9db NB |
430 | } |
431 | ||
432 | /* core_clear_lun_from_tpg(): | |
433 | * | |
434 | * | |
435 | */ | |
436 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
437 | { | |
438 | struct se_node_acl *nacl; | |
439 | struct se_dev_entry *deve; | |
c66ac9db | 440 | |
403edd78 | 441 | mutex_lock(&tpg->acl_node_mutex); |
c66ac9db | 442 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
c66ac9db | 443 | |
29a05dee NB |
444 | mutex_lock(&nacl->lun_entry_mutex); |
445 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
446 | struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, | |
447 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
c66ac9db | 448 | |
29a05dee NB |
449 | if (lun != tmp_lun) |
450 | continue; | |
c66ac9db | 451 | |
29a05dee | 452 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
c66ac9db | 453 | } |
29a05dee | 454 | mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db | 455 | } |
403edd78 | 456 | mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db NB |
457 | } |
458 | ||
adf653f9 | 459 | int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
c66ac9db | 460 | { |
adf653f9 | 461 | struct se_lun *tmp; |
c66ac9db NB |
462 | |
463 | spin_lock(&dev->se_port_lock); | |
adf653f9 | 464 | if (dev->export_count == 0x0000ffff) { |
6708bb27 | 465 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
466 | " 0x0000ffff\n"); |
467 | spin_unlock(&dev->se_port_lock); | |
adf653f9 | 468 | return -ENOSPC; |
c66ac9db NB |
469 | } |
470 | again: | |
471 | /* | |
35d1efe8 | 472 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db NB |
473 | * Here is the table from spc4r17 section 7.7.3.8. |
474 | * | |
475 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
476 | * | |
477 | * Code Description | |
478 | * 0h Reserved | |
479 | * 1h Relative port 1, historically known as port A | |
480 | * 2h Relative port 2, historically known as port B | |
481 | * 3h to FFFFh Relative port 3 through 65 535 | |
482 | */ | |
adf653f9 CH |
483 | lun->lun_rtpi = dev->dev_rpti_counter++; |
484 | if (!lun->lun_rtpi) | |
c66ac9db NB |
485 | goto again; |
486 | ||
adf653f9 | 487 | list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
c66ac9db | 488 | /* |
35d1efe8 | 489 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db NB |
490 | * for 16-bit wrap.. |
491 | */ | |
adf653f9 | 492 | if (lun->lun_rtpi == tmp->lun_rtpi) |
c66ac9db NB |
493 | goto again; |
494 | } | |
495 | spin_unlock(&dev->se_port_lock); | |
496 | ||
c66ac9db NB |
497 | return 0; |
498 | } | |
499 | ||
0fd97ccf | 500 | static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db NB |
501 | { |
502 | struct t10_vpd *vpd, *vpd_tmp; | |
503 | ||
0fd97ccf | 504 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 505 | list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf | 506 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
507 | list_del(&vpd->vpd_list); |
508 | kfree(vpd); | |
509 | } | |
0fd97ccf | 510 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
511 | } |
512 | ||
c8045372 | 513 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a2 | 514 | { |
3e03989b RD |
515 | u32 aligned_max_sectors; |
516 | u32 alignment; | |
525a48a2 NB |
517 | /* |
518 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
519 | * transport_allocate_data_tasks() operation. | |
520 | */ | |
3e03989b RD |
521 | alignment = max(1ul, PAGE_SIZE / block_size); |
522 | aligned_max_sectors = rounddown(max_sectors, alignment); | |
523 | ||
524 | if (max_sectors != aligned_max_sectors) | |
525 | pr_info("Rounding down aligned max_sectors from %u to %u\n", | |
526 | max_sectors, aligned_max_sectors); | |
525a48a2 | 527 | |
3e03989b | 528 | return aligned_max_sectors; |
525a48a2 NB |
529 | } |
530 | ||
9bc6548f CVB |
531 | bool se_dev_check_wce(struct se_device *dev) |
532 | { | |
533 | bool wce = false; | |
534 | ||
535 | if (dev->transport->get_write_cache) | |
536 | wce = dev->transport->get_write_cache(dev); | |
537 | else if (dev->dev_attrib.emulate_write_cache > 0) | |
538 | wce = true; | |
539 | ||
540 | return wce; | |
541 | } | |
542 | ||
6bb82612 | 543 | int core_dev_add_lun( |
c66ac9db | 544 | struct se_portal_group *tpg, |
c66ac9db | 545 | struct se_device *dev, |
6bb82612 | 546 | struct se_lun *lun) |
c66ac9db | 547 | { |
8d9efe53 | 548 | int rc; |
c66ac9db | 549 | |
d344f8a1 | 550 | rc = core_tpg_add_lun(tpg, lun, |
58d92618 | 551 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
8d9efe53 | 552 | if (rc < 0) |
6bb82612 | 553 | return rc; |
c66ac9db | 554 | |
6708bb27 | 555 | pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" |
e3d6f909 | 556 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
2af7973a | 557 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
2dca673b | 558 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db NB |
559 | /* |
560 | * Update LUN maps for dynamically added initiators when | |
561 | * generate_node_acl is enabled. | |
562 | */ | |
e3d6f909 | 563 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 564 | struct se_node_acl *acl; |
403edd78 NB |
565 | |
566 | mutex_lock(&tpg->acl_node_mutex); | |
c66ac9db | 567 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
568 | if (acl->dynamic_node_acl && |
569 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
570 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
df9766ca | 571 | core_tpg_add_node_to_devs(acl, tpg, lun); |
c66ac9db NB |
572 | } |
573 | } | |
403edd78 | 574 | mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db NB |
575 | } |
576 | ||
6bb82612 | 577 | return 0; |
c66ac9db NB |
578 | } |
579 | ||
580 | /* core_dev_del_lun(): | |
581 | * | |
582 | * | |
583 | */ | |
cd9d7cba | 584 | void core_dev_del_lun( |
c66ac9db | 585 | struct se_portal_group *tpg, |
cd9d7cba | 586 | struct se_lun *lun) |
c66ac9db | 587 | { |
cd9d7cba | 588 | pr_debug("%s_TPG[%u]_LUN[%u] - Deactivating %s Logical Unit from" |
e3d6f909 | 589 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
cd9d7cba | 590 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
e3d6f909 | 591 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db | 592 | |
cd9d7cba | 593 | core_tpg_remove_lun(tpg, lun); |
c66ac9db NB |
594 | } |
595 | ||
c66ac9db NB |
596 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
597 | struct se_portal_group *tpg, | |
fcf29481 | 598 | struct se_node_acl *nacl, |
c66ac9db | 599 | u32 mapped_lun, |
c66ac9db NB |
600 | int *ret) |
601 | { | |
602 | struct se_lun_acl *lacl; | |
c66ac9db | 603 | |
fcf29481 | 604 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 605 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 606 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
607 | *ret = -EOVERFLOW; |
608 | return NULL; | |
609 | } | |
c66ac9db | 610 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27 AG |
611 | if (!lacl) { |
612 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
613 | *ret = -ENOMEM; |
614 | return NULL; | |
615 | } | |
616 | ||
c66ac9db NB |
617 | lacl->mapped_lun = mapped_lun; |
618 | lacl->se_lun_nacl = nacl; | |
fcf29481 NB |
619 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
620 | nacl->initiatorname); | |
c66ac9db NB |
621 | |
622 | return lacl; | |
623 | } | |
624 | ||
625 | int core_dev_add_initiator_node_lun_acl( | |
626 | struct se_portal_group *tpg, | |
627 | struct se_lun_acl *lacl, | |
6bb82612 | 628 | struct se_lun *lun, |
c66ac9db NB |
629 | u32 lun_access) |
630 | { | |
6bb82612 | 631 | struct se_node_acl *nacl = lacl->se_lun_nacl; |
c66ac9db | 632 | |
6708bb27 | 633 | if (!nacl) |
c66ac9db NB |
634 | return -EINVAL; |
635 | ||
636 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
637 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
638 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
639 | ||
640 | lacl->se_lun = lun; | |
641 | ||
e80ac6c4 AG |
642 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
643 | lun_access, nacl, tpg) < 0) | |
c66ac9db NB |
644 | return -EINVAL; |
645 | ||
6708bb27 | 646 | pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " |
e3d6f909 | 647 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
6bb82612 | 648 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, |
c66ac9db NB |
649 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
650 | lacl->initiatorname); | |
651 | /* | |
652 | * Check to see if there are any existing persistent reservation APTPL | |
653 | * pre-registrations that need to be enabled for this LUN ACL.. | |
654 | */ | |
e2480563 NB |
655 | core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, nacl, |
656 | lacl->mapped_lun); | |
c66ac9db NB |
657 | return 0; |
658 | } | |
659 | ||
c66ac9db | 660 | int core_dev_del_initiator_node_lun_acl( |
c66ac9db NB |
661 | struct se_lun *lun, |
662 | struct se_lun_acl *lacl) | |
663 | { | |
adf653f9 | 664 | struct se_portal_group *tpg = lun->lun_tpg; |
c66ac9db | 665 | struct se_node_acl *nacl; |
29a05dee | 666 | struct se_dev_entry *deve; |
c66ac9db NB |
667 | |
668 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 669 | if (!nacl) |
c66ac9db NB |
670 | return -EINVAL; |
671 | ||
29a05dee NB |
672 | mutex_lock(&nacl->lun_entry_mutex); |
673 | deve = target_nacl_find_deve(nacl, lacl->mapped_lun); | |
674 | if (deve) | |
675 | core_disable_device_list_for_node(lun, deve, nacl, tpg); | |
676 | mutex_unlock(&nacl->lun_entry_mutex); | |
c66ac9db | 677 | |
6708bb27 | 678 | pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for" |
c66ac9db | 679 | " InitiatorNode: %s Mapped LUN: %u\n", |
e3d6f909 AG |
680 | tpg->se_tpg_tfo->get_fabric_name(), |
681 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
682 | lacl->initiatorname, lacl->mapped_lun); |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | void core_dev_free_initiator_node_lun_acl( | |
688 | struct se_portal_group *tpg, | |
689 | struct se_lun_acl *lacl) | |
690 | { | |
6708bb27 | 691 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
e3d6f909 AG |
692 | " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
693 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
694 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
695 | lacl->initiatorname, lacl->mapped_lun); |
696 | ||
697 | kfree(lacl); | |
698 | } | |
699 | ||
0fd97ccf CH |
700 | static void scsi_dump_inquiry(struct se_device *dev) |
701 | { | |
702 | struct t10_wwn *wwn = &dev->t10_wwn; | |
703 | char buf[17]; | |
704 | int i, device_type; | |
705 | /* | |
706 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer | |
707 | */ | |
708 | for (i = 0; i < 8; i++) | |
709 | if (wwn->vendor[i] >= 0x20) | |
710 | buf[i] = wwn->vendor[i]; | |
711 | else | |
712 | buf[i] = ' '; | |
713 | buf[i] = '\0'; | |
714 | pr_debug(" Vendor: %s\n", buf); | |
715 | ||
716 | for (i = 0; i < 16; i++) | |
717 | if (wwn->model[i] >= 0x20) | |
718 | buf[i] = wwn->model[i]; | |
719 | else | |
720 | buf[i] = ' '; | |
721 | buf[i] = '\0'; | |
722 | pr_debug(" Model: %s\n", buf); | |
723 | ||
724 | for (i = 0; i < 4; i++) | |
725 | if (wwn->revision[i] >= 0x20) | |
726 | buf[i] = wwn->revision[i]; | |
727 | else | |
728 | buf[i] = ' '; | |
729 | buf[i] = '\0'; | |
730 | pr_debug(" Revision: %s\n", buf); | |
731 | ||
732 | device_type = dev->transport->get_device_type(dev); | |
733 | pr_debug(" Type: %s ", scsi_device_type(device_type)); | |
0fd97ccf CH |
734 | } |
735 | ||
736 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |
737 | { | |
738 | struct se_device *dev; | |
4863e525 | 739 | struct se_lun *xcopy_lun; |
0fd97ccf | 740 | |
0a06d430 | 741 | dev = hba->backend->ops->alloc_device(hba, name); |
0fd97ccf CH |
742 | if (!dev) |
743 | return NULL; | |
744 | ||
0ff87549 | 745 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf | 746 | dev->se_hba = hba; |
0a06d430 | 747 | dev->transport = hba->backend->ops; |
2ed22c9c | 748 | dev->prot_length = sizeof(struct se_dif_v1_tuple); |
0fd97ccf CH |
749 | |
750 | INIT_LIST_HEAD(&dev->dev_list); | |
751 | INIT_LIST_HEAD(&dev->dev_sep_list); | |
752 | INIT_LIST_HEAD(&dev->dev_tmr_list); | |
753 | INIT_LIST_HEAD(&dev->delayed_cmd_list); | |
754 | INIT_LIST_HEAD(&dev->state_list); | |
755 | INIT_LIST_HEAD(&dev->qf_cmd_list); | |
d9ea32bf | 756 | INIT_LIST_HEAD(&dev->g_dev_node); |
0fd97ccf CH |
757 | spin_lock_init(&dev->execute_task_lock); |
758 | spin_lock_init(&dev->delayed_cmd_lock); | |
759 | spin_lock_init(&dev->dev_reservation_lock); | |
760 | spin_lock_init(&dev->se_port_lock); | |
761 | spin_lock_init(&dev->se_tmr_lock); | |
762 | spin_lock_init(&dev->qf_cmd_lock); | |
68ff9b9b | 763 | sema_init(&dev->caw_sem, 1); |
0fd97ccf CH |
764 | atomic_set(&dev->dev_ordered_id, 0); |
765 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); | |
766 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); | |
767 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); | |
768 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); | |
769 | spin_lock_init(&dev->t10_pr.registration_lock); | |
770 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); | |
771 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); | |
772 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); | |
c66094bf HR |
773 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
774 | spin_lock_init(&dev->t10_alua.lba_map_lock); | |
0fd97ccf | 775 | |
0fd97ccf CH |
776 | dev->t10_wwn.t10_dev = dev; |
777 | dev->t10_alua.t10_dev = dev; | |
778 | ||
779 | dev->dev_attrib.da_dev = dev; | |
adfa9570 | 780 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
814e5b45 CH |
781 | dev->dev_attrib.emulate_dpo = 1; |
782 | dev->dev_attrib.emulate_fua_write = 1; | |
783 | dev->dev_attrib.emulate_fua_read = 1; | |
0fd97ccf CH |
784 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
785 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
786 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
787 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
788 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
0123a9ec | 789 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
d397a445 | 790 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
2ed22c9c | 791 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
0fd97ccf | 792 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
92404e60 | 793 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
0fd97ccf CH |
794 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
795 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | |
796 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; | |
797 | dev->dev_attrib.max_unmap_block_desc_count = | |
798 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
799 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
800 | dev->dev_attrib.unmap_granularity_alignment = | |
801 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; | |
773cbaf7 | 802 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf | 803 | |
4863e525 NB |
804 | xcopy_lun = &dev->xcopy_lun; |
805 | xcopy_lun->lun_se_dev = dev; | |
4863e525 NB |
806 | spin_lock_init(&xcopy_lun->lun_sep_lock); |
807 | init_completion(&xcopy_lun->lun_ref_comp); | |
adf653f9 CH |
808 | INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); |
809 | INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); | |
810 | mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); | |
811 | xcopy_lun->lun_tpg = &xcopy_pt_tpg; | |
4863e525 | 812 | |
0fd97ccf CH |
813 | return dev; |
814 | } | |
815 | ||
816 | int target_configure_device(struct se_device *dev) | |
817 | { | |
818 | struct se_hba *hba = dev->se_hba; | |
819 | int ret; | |
820 | ||
821 | if (dev->dev_flags & DF_CONFIGURED) { | |
822 | pr_err("se_dev->se_dev_ptr already set for storage" | |
823 | " object\n"); | |
824 | return -EEXIST; | |
825 | } | |
826 | ||
827 | ret = dev->transport->configure_device(dev); | |
828 | if (ret) | |
829 | goto out; | |
0fd97ccf CH |
830 | /* |
831 | * XXX: there is not much point to have two different values here.. | |
832 | */ | |
833 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; | |
834 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; | |
835 | ||
836 | /* | |
837 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers | |
838 | */ | |
839 | dev->dev_attrib.hw_max_sectors = | |
840 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, | |
841 | dev->dev_attrib.hw_block_size); | |
046ba642 | 842 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
0fd97ccf CH |
843 | |
844 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); | |
845 | dev->creation_time = get_jiffies_64(); | |
846 | ||
0fd97ccf CH |
847 | ret = core_setup_alua(dev); |
848 | if (ret) | |
849 | goto out; | |
850 | ||
851 | /* | |
852 | * Startup the struct se_device processing thread | |
853 | */ | |
854 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, | |
855 | dev->transport->name); | |
856 | if (!dev->tmr_wq) { | |
857 | pr_err("Unable to create tmr workqueue for %s\n", | |
858 | dev->transport->name); | |
859 | ret = -ENOMEM; | |
860 | goto out_free_alua; | |
861 | } | |
862 | ||
863 | /* | |
864 | * Setup work_queue for QUEUE_FULL | |
865 | */ | |
866 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); | |
867 | ||
868 | /* | |
869 | * Preload the initial INQUIRY const values if we are doing | |
870 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI | |
871 | * passthrough because this is being provided by the backend LLD. | |
872 | */ | |
a3541703 | 873 | if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
0fd97ccf CH |
874 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
875 | strncpy(&dev->t10_wwn.model[0], | |
876 | dev->transport->inquiry_prod, 16); | |
877 | strncpy(&dev->t10_wwn.revision[0], | |
878 | dev->transport->inquiry_rev, 4); | |
879 | } | |
880 | ||
881 | scsi_dump_inquiry(dev); | |
882 | ||
883 | spin_lock(&hba->device_lock); | |
884 | hba->dev_count++; | |
885 | spin_unlock(&hba->device_lock); | |
d9ea32bf NB |
886 | |
887 | mutex_lock(&g_device_mutex); | |
888 | list_add_tail(&dev->g_dev_node, &g_device_list); | |
889 | mutex_unlock(&g_device_mutex); | |
890 | ||
5f7da044 NB |
891 | dev->dev_flags |= DF_CONFIGURED; |
892 | ||
0fd97ccf CH |
893 | return 0; |
894 | ||
895 | out_free_alua: | |
896 | core_alua_free_lu_gp_mem(dev); | |
897 | out: | |
898 | se_release_vpd_for_dev(dev); | |
899 | return ret; | |
900 | } | |
901 | ||
902 | void target_free_device(struct se_device *dev) | |
903 | { | |
904 | struct se_hba *hba = dev->se_hba; | |
905 | ||
906 | WARN_ON(!list_empty(&dev->dev_sep_list)); | |
907 | ||
908 | if (dev->dev_flags & DF_CONFIGURED) { | |
909 | destroy_workqueue(dev->tmr_wq); | |
910 | ||
d9ea32bf NB |
911 | mutex_lock(&g_device_mutex); |
912 | list_del(&dev->g_dev_node); | |
913 | mutex_unlock(&g_device_mutex); | |
914 | ||
0fd97ccf CH |
915 | spin_lock(&hba->device_lock); |
916 | hba->dev_count--; | |
917 | spin_unlock(&hba->device_lock); | |
918 | } | |
919 | ||
920 | core_alua_free_lu_gp_mem(dev); | |
229d4f11 | 921 | core_alua_set_lba_map(dev, NULL, 0, 0); |
0fd97ccf CH |
922 | core_scsi3_free_all_registrations(dev); |
923 | se_release_vpd_for_dev(dev); | |
924 | ||
2ed22c9c NB |
925 | if (dev->transport->free_prot) |
926 | dev->transport->free_prot(dev); | |
927 | ||
0fd97ccf CH |
928 | dev->transport->free_device(dev); |
929 | } | |
930 | ||
c66ac9db NB |
931 | int core_dev_setup_virtual_lun0(void) |
932 | { | |
933 | struct se_hba *hba; | |
934 | struct se_device *dev; | |
db5d1c3c | 935 | char buf[] = "rd_pages=8,rd_nullio=1"; |
c66ac9db NB |
936 | int ret; |
937 | ||
6708bb27 | 938 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
939 | if (IS_ERR(hba)) |
940 | return PTR_ERR(hba); | |
941 | ||
0fd97ccf CH |
942 | dev = target_alloc_device(hba, "virt_lun0"); |
943 | if (!dev) { | |
c66ac9db | 944 | ret = -ENOMEM; |
0fd97ccf | 945 | goto out_free_hba; |
c66ac9db | 946 | } |
c66ac9db | 947 | |
0a06d430 | 948 | hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db | 949 | |
0fd97ccf CH |
950 | ret = target_configure_device(dev); |
951 | if (ret) | |
952 | goto out_free_se_dev; | |
c66ac9db | 953 | |
0fd97ccf CH |
954 | lun0_hba = hba; |
955 | g_lun0_dev = dev; | |
c66ac9db | 956 | return 0; |
0fd97ccf CH |
957 | |
958 | out_free_se_dev: | |
959 | target_free_device(dev); | |
960 | out_free_hba: | |
961 | core_delete_hba(hba); | |
c66ac9db NB |
962 | return ret; |
963 | } | |
964 | ||
965 | ||
966 | void core_dev_release_virtual_lun0(void) | |
967 | { | |
e3d6f909 | 968 | struct se_hba *hba = lun0_hba; |
c66ac9db | 969 | |
6708bb27 | 970 | if (!hba) |
c66ac9db NB |
971 | return; |
972 | ||
e3d6f909 | 973 | if (g_lun0_dev) |
0fd97ccf | 974 | target_free_device(g_lun0_dev); |
c66ac9db NB |
975 | core_delete_hba(hba); |
976 | } | |
7bfea53b AG |
977 | |
978 | /* | |
979 | * Common CDB parsing for kernel and user passthrough. | |
980 | */ | |
981 | sense_reason_t | |
982 | passthrough_parse_cdb(struct se_cmd *cmd, | |
983 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) | |
984 | { | |
985 | unsigned char *cdb = cmd->t_task_cdb; | |
986 | ||
987 | /* | |
988 | * Clear a lun set in the cdb if the initiator talking to use spoke | |
989 | * and old standards version, as we can't assume the underlying device | |
990 | * won't choke up on it. | |
991 | */ | |
992 | switch (cdb[0]) { | |
993 | case READ_10: /* SBC - RDProtect */ | |
994 | case READ_12: /* SBC - RDProtect */ | |
995 | case READ_16: /* SBC - RDProtect */ | |
996 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ | |
997 | case VERIFY: /* SBC - VRProtect */ | |
998 | case VERIFY_16: /* SBC - VRProtect */ | |
999 | case WRITE_VERIFY: /* SBC - VRProtect */ | |
1000 | case WRITE_VERIFY_12: /* SBC - VRProtect */ | |
1001 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ | |
1002 | break; | |
1003 | default: | |
1004 | cdb[1] &= 0x1f; /* clear logical unit number */ | |
1005 | break; | |
1006 | } | |
1007 | ||
1008 | /* | |
1009 | * For REPORT LUNS we always need to emulate the response, for everything | |
1010 | * else, pass it up. | |
1011 | */ | |
1012 | if (cdb[0] == REPORT_LUNS) { | |
1013 | cmd->execute_cmd = spc_emulate_report_luns; | |
1014 | return TCM_NO_SENSE; | |
1015 | } | |
1016 | ||
1017 | /* Set DATA_CDB flag for ops that should have it */ | |
1018 | switch (cdb[0]) { | |
1019 | case READ_6: | |
1020 | case READ_10: | |
1021 | case READ_12: | |
1022 | case READ_16: | |
1023 | case WRITE_6: | |
1024 | case WRITE_10: | |
1025 | case WRITE_12: | |
1026 | case WRITE_16: | |
1027 | case WRITE_VERIFY: | |
1028 | case WRITE_VERIFY_12: | |
1029 | case 0x8e: /* WRITE_VERIFY_16 */ | |
1030 | case COMPARE_AND_WRITE: | |
1031 | case XDWRITEREAD_10: | |
1032 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; | |
1033 | break; | |
1034 | case VARIABLE_LENGTH_CMD: | |
1035 | switch (get_unaligned_be16(&cdb[8])) { | |
1036 | case READ_32: | |
1037 | case WRITE_32: | |
1038 | case 0x0c: /* WRITE_VERIFY_32 */ | |
1039 | case XDWRITEREAD_32: | |
1040 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; | |
1041 | break; | |
1042 | } | |
1043 | } | |
1044 | ||
1045 | cmd->execute_cmd = exec_cmd; | |
1046 | ||
1047 | return TCM_NO_SENSE; | |
1048 | } | |
1049 | EXPORT_SYMBOL(passthrough_parse_cdb); |