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 | * | |
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 | 58 | sense_reason_t |
f2d30680 | 59 | transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 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; |
29a05dee | 64 | struct se_dev_entry *deve; |
c66ac9db | 65 | |
de103c93 CH |
66 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
67 | return TCM_NON_EXISTENT_LUN; | |
d8144955 | 68 | |
29a05dee NB |
69 | rcu_read_lock(); |
70 | deve = target_nacl_find_deve(nacl, unpacked_lun); | |
71 | if (deve) { | |
72 | atomic_long_inc(&deve->total_cmds); | |
5951146d AG |
73 | |
74 | if ((se_cmd->data_direction == DMA_TO_DEVICE) && | |
75 | (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { | |
6708bb27 | 76 | pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" |
f2d30680 | 77 | " Access for 0x%08llx\n", |
5951146d AG |
78 | se_cmd->se_tfo->get_fabric_name(), |
79 | unpacked_lun); | |
29a05dee | 80 | rcu_read_unlock(); |
de103c93 | 81 | return TCM_WRITE_PROTECTED; |
c66ac9db | 82 | } |
5951146d AG |
83 | |
84 | if (se_cmd->data_direction == DMA_TO_DEVICE) | |
29a05dee NB |
85 | atomic_long_add(se_cmd->data_length, |
86 | &deve->write_bytes); | |
5951146d | 87 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
29a05dee NB |
88 | atomic_long_add(se_cmd->data_length, |
89 | &deve->read_bytes); | |
5951146d | 90 | |
29a05dee NB |
91 | se_lun = rcu_dereference(deve->se_lun); |
92 | se_cmd->se_lun = rcu_dereference(deve->se_lun); | |
c66ac9db NB |
93 | se_cmd->pr_res_key = deve->pr_res_key; |
94 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 95 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
96 | |
97 | percpu_ref_get(&se_lun->lun_ref); | |
98 | se_cmd->lun_ref_active = true; | |
c66ac9db | 99 | } |
29a05dee | 100 | rcu_read_unlock(); |
c66ac9db NB |
101 | |
102 | if (!se_lun) { | |
5951146d AG |
103 | /* |
104 | * Use the se_portal_group->tpg_virt_lun0 to allow for | |
105 | * REPORT_LUNS, et al to be returned when no active | |
106 | * MappedLUN=0 exists for this Initiator Port. | |
107 | */ | |
108 | if (unpacked_lun != 0) { | |
6708bb27 | 109 | pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
f2d30680 | 110 | " Access for 0x%08llx\n", |
e3d6f909 | 111 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 112 | unpacked_lun); |
de103c93 | 113 | return TCM_NON_EXISTENT_LUN; |
5951146d AG |
114 | } |
115 | /* | |
116 | * Force WRITE PROTECT for virtual LUN 0 | |
117 | */ | |
118 | if ((se_cmd->data_direction != DMA_FROM_DEVICE) && | |
de103c93 CH |
119 | (se_cmd->data_direction != DMA_NONE)) |
120 | return TCM_WRITE_PROTECTED; | |
5951146d | 121 | |
adf653f9 CH |
122 | se_lun = se_sess->se_tpg->tpg_virt_lun0; |
123 | se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; | |
5951146d | 124 | se_cmd->orig_fe_lun = 0; |
5951146d | 125 | se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; |
5277797d NB |
126 | |
127 | percpu_ref_get(&se_lun->lun_ref); | |
128 | se_cmd->lun_ref_active = true; | |
c66ac9db | 129 | } |
4cc987ea NB |
130 | /* |
131 | * RCU reference protected by percpu se_lun->lun_ref taken above that | |
132 | * must drop to zero (including initial reference) before this se_lun | |
133 | * pointer can be kfree_rcu() by the final se_lun->lun_group put via | |
134 | * target_core_fabric_configfs.c:target_fabric_port_release | |
135 | */ | |
136 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); | |
137 | atomic_long_inc(&se_cmd->se_dev->num_cmds); | |
c66ac9db | 138 | |
c66ac9db | 139 | if (se_cmd->data_direction == DMA_TO_DEVICE) |
4cc987ea NB |
140 | atomic_long_add(se_cmd->data_length, |
141 | &se_cmd->se_dev->write_bytes); | |
c66ac9db | 142 | else if (se_cmd->data_direction == DMA_FROM_DEVICE) |
4cc987ea NB |
143 | atomic_long_add(se_cmd->data_length, |
144 | &se_cmd->se_dev->read_bytes); | |
c66ac9db | 145 | |
c66ac9db NB |
146 | return 0; |
147 | } | |
5951146d | 148 | EXPORT_SYMBOL(transport_lookup_cmd_lun); |
c66ac9db | 149 | |
f2d30680 | 150 | int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u64 unpacked_lun) |
c66ac9db | 151 | { |
c66ac9db NB |
152 | struct se_dev_entry *deve; |
153 | struct se_lun *se_lun = NULL; | |
e3d6f909 | 154 | struct se_session *se_sess = se_cmd->se_sess; |
29a05dee | 155 | struct se_node_acl *nacl = se_sess->se_node_acl; |
c66ac9db | 156 | struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; |
5e1be919 | 157 | unsigned long flags; |
c66ac9db | 158 | |
de103c93 | 159 | if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) |
e3d6f909 | 160 | return -ENODEV; |
d8144955 | 161 | |
29a05dee NB |
162 | rcu_read_lock(); |
163 | deve = target_nacl_find_deve(nacl, unpacked_lun); | |
164 | if (deve) { | |
165 | se_tmr->tmr_lun = rcu_dereference(deve->se_lun); | |
166 | se_cmd->se_lun = rcu_dereference(deve->se_lun); | |
167 | se_lun = rcu_dereference(deve->se_lun); | |
c66ac9db NB |
168 | se_cmd->pr_res_key = deve->pr_res_key; |
169 | se_cmd->orig_fe_lun = unpacked_lun; | |
c66ac9db | 170 | } |
29a05dee | 171 | rcu_read_unlock(); |
c66ac9db NB |
172 | |
173 | if (!se_lun) { | |
6708bb27 | 174 | pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" |
f2d30680 | 175 | " Access for 0x%08llx\n", |
e3d6f909 | 176 | se_cmd->se_tfo->get_fabric_name(), |
c66ac9db | 177 | unpacked_lun); |
e3d6f909 | 178 | return -ENODEV; |
c66ac9db | 179 | } |
4cc987ea NB |
180 | /* |
181 | * XXX: Add percpu se_lun->lun_ref reference count for TMR | |
182 | */ | |
183 | se_cmd->se_dev = rcu_dereference_raw(se_lun->lun_se_dev); | |
184 | se_tmr->tmr_dev = rcu_dereference_raw(se_lun->lun_se_dev); | |
5951146d | 185 | |
5e1be919 | 186 | spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); |
5951146d | 187 | list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); |
5e1be919 | 188 | spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); |
c66ac9db NB |
189 | |
190 | return 0; | |
191 | } | |
5951146d | 192 | EXPORT_SYMBOL(transport_lookup_tmr_lun); |
c66ac9db | 193 | |
29a05dee NB |
194 | bool target_lun_is_rdonly(struct se_cmd *cmd) |
195 | { | |
196 | struct se_session *se_sess = cmd->se_sess; | |
197 | struct se_dev_entry *deve; | |
198 | bool ret; | |
199 | ||
200 | if (cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) | |
201 | return true; | |
202 | ||
203 | rcu_read_lock(); | |
204 | deve = target_nacl_find_deve(se_sess->se_node_acl, cmd->orig_fe_lun); | |
205 | ret = (deve && deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY); | |
206 | rcu_read_unlock(); | |
207 | ||
208 | return ret; | |
209 | } | |
210 | EXPORT_SYMBOL(target_lun_is_rdonly); | |
211 | ||
c66ac9db NB |
212 | /* |
213 | * This function is called from core_scsi3_emulate_pro_register_and_move() | |
29a05dee | 214 | * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_kref |
c66ac9db NB |
215 | * when a matching rtpi is found. |
216 | */ | |
217 | struct se_dev_entry *core_get_se_deve_from_rtpi( | |
218 | struct se_node_acl *nacl, | |
219 | u16 rtpi) | |
220 | { | |
221 | struct se_dev_entry *deve; | |
222 | struct se_lun *lun; | |
c66ac9db | 223 | struct se_portal_group *tpg = nacl->se_tpg; |
c66ac9db | 224 | |
29a05dee NB |
225 | rcu_read_lock(); |
226 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
227 | lun = rcu_dereference(deve->se_lun); | |
6708bb27 AG |
228 | if (!lun) { |
229 | pr_err("%s device entries device pointer is" | |
c66ac9db | 230 | " NULL, but Initiator has access.\n", |
e3d6f909 | 231 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
232 | continue; |
233 | } | |
29a05dee | 234 | if (lun->lun_rtpi != rtpi) |
c66ac9db NB |
235 | continue; |
236 | ||
29a05dee NB |
237 | kref_get(&deve->pr_kref); |
238 | rcu_read_unlock(); | |
c66ac9db NB |
239 | |
240 | return deve; | |
241 | } | |
29a05dee | 242 | rcu_read_unlock(); |
c66ac9db NB |
243 | |
244 | return NULL; | |
245 | } | |
246 | ||
29a05dee | 247 | void core_free_device_list_for_node( |
c66ac9db NB |
248 | struct se_node_acl *nacl, |
249 | struct se_portal_group *tpg) | |
250 | { | |
251 | struct se_dev_entry *deve; | |
c66ac9db | 252 | |
29a05dee NB |
253 | mutex_lock(&nacl->lun_entry_mutex); |
254 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
255 | struct se_lun *lun = rcu_dereference_check(deve->se_lun, | |
256 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
257 | core_disable_device_list_for_node(lun, deve, nacl, tpg); | |
c66ac9db | 258 | } |
29a05dee | 259 | mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db NB |
260 | } |
261 | ||
c66ac9db | 262 | void core_update_device_list_access( |
f2d30680 | 263 | u64 mapped_lun, |
c66ac9db NB |
264 | u32 lun_access, |
265 | struct se_node_acl *nacl) | |
266 | { | |
267 | struct se_dev_entry *deve; | |
268 | ||
29a05dee NB |
269 | mutex_lock(&nacl->lun_entry_mutex); |
270 | deve = target_nacl_find_deve(nacl, mapped_lun); | |
271 | if (deve) { | |
272 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { | |
273 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; | |
274 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
275 | } else { | |
276 | deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; | |
277 | deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
278 | } | |
c66ac9db | 279 | } |
29a05dee NB |
280 | mutex_unlock(&nacl->lun_entry_mutex); |
281 | } | |
282 | ||
283 | /* | |
284 | * Called with rcu_read_lock or nacl->device_list_lock held. | |
285 | */ | |
f2d30680 | 286 | struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *nacl, u64 mapped_lun) |
29a05dee NB |
287 | { |
288 | struct se_dev_entry *deve; | |
289 | ||
290 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) | |
291 | if (deve->mapped_lun == mapped_lun) | |
292 | return deve; | |
293 | ||
294 | return NULL; | |
295 | } | |
296 | EXPORT_SYMBOL(target_nacl_find_deve); | |
297 | ||
298 | void target_pr_kref_release(struct kref *kref) | |
299 | { | |
300 | struct se_dev_entry *deve = container_of(kref, struct se_dev_entry, | |
301 | pr_kref); | |
302 | complete(&deve->pr_comp); | |
c66ac9db NB |
303 | } |
304 | ||
e80ac6c4 | 305 | /* core_enable_device_list_for_node(): |
c66ac9db NB |
306 | * |
307 | * | |
308 | */ | |
e80ac6c4 | 309 | int core_enable_device_list_for_node( |
c66ac9db NB |
310 | struct se_lun *lun, |
311 | struct se_lun_acl *lun_acl, | |
f2d30680 | 312 | u64 mapped_lun, |
c66ac9db NB |
313 | u32 lun_access, |
314 | struct se_node_acl *nacl, | |
e80ac6c4 | 315 | struct se_portal_group *tpg) |
c66ac9db | 316 | { |
29a05dee NB |
317 | struct se_dev_entry *orig, *new; |
318 | ||
319 | new = kzalloc(sizeof(*new), GFP_KERNEL); | |
320 | if (!new) { | |
321 | pr_err("Unable to allocate se_dev_entry memory\n"); | |
322 | return -ENOMEM; | |
323 | } | |
324 | ||
325 | atomic_set(&new->ua_count, 0); | |
326 | spin_lock_init(&new->ua_lock); | |
29a05dee | 327 | INIT_LIST_HEAD(&new->ua_list); |
adf653f9 | 328 | INIT_LIST_HEAD(&new->lun_link); |
29a05dee NB |
329 | |
330 | new->mapped_lun = mapped_lun; | |
331 | kref_init(&new->pr_kref); | |
332 | init_completion(&new->pr_comp); | |
333 | ||
334 | if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) | |
335 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; | |
336 | else | |
337 | new->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; | |
338 | ||
339 | new->creation_time = get_jiffies_64(); | |
340 | new->attach_count++; | |
341 | ||
342 | mutex_lock(&nacl->lun_entry_mutex); | |
343 | orig = target_nacl_find_deve(nacl, mapped_lun); | |
344 | if (orig && orig->se_lun) { | |
345 | struct se_lun *orig_lun = rcu_dereference_check(orig->se_lun, | |
346 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
347 | ||
348 | if (orig_lun != lun) { | |
349 | pr_err("Existing orig->se_lun doesn't match new lun" | |
350 | " for dynamic -> explicit NodeACL conversion:" | |
351 | " %s\n", nacl->initiatorname); | |
352 | mutex_unlock(&nacl->lun_entry_mutex); | |
353 | kfree(new); | |
e80ac6c4 | 354 | return -EINVAL; |
c66ac9db | 355 | } |
29a05dee | 356 | BUG_ON(orig->se_lun_acl != NULL); |
c66ac9db | 357 | |
29a05dee NB |
358 | rcu_assign_pointer(new->se_lun, lun); |
359 | rcu_assign_pointer(new->se_lun_acl, lun_acl); | |
360 | hlist_del_rcu(&orig->link); | |
361 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); | |
362 | mutex_unlock(&nacl->lun_entry_mutex); | |
c66ac9db | 363 | |
adf653f9 CH |
364 | spin_lock_bh(&lun->lun_deve_lock); |
365 | list_del(&orig->lun_link); | |
366 | list_add_tail(&new->lun_link, &lun->lun_deve_list); | |
367 | spin_unlock_bh(&lun->lun_deve_lock); | |
c66ac9db | 368 | |
29a05dee NB |
369 | kref_put(&orig->pr_kref, target_pr_kref_release); |
370 | wait_for_completion(&orig->pr_comp); | |
c66ac9db | 371 | |
29a05dee NB |
372 | kfree_rcu(orig, rcu_head); |
373 | return 0; | |
c66ac9db | 374 | } |
e80ac6c4 | 375 | |
29a05dee NB |
376 | rcu_assign_pointer(new->se_lun, lun); |
377 | rcu_assign_pointer(new->se_lun_acl, lun_acl); | |
378 | hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); | |
379 | mutex_unlock(&nacl->lun_entry_mutex); | |
e80ac6c4 | 380 | |
adf653f9 CH |
381 | spin_lock_bh(&lun->lun_deve_lock); |
382 | list_add_tail(&new->lun_link, &lun->lun_deve_list); | |
383 | spin_unlock_bh(&lun->lun_deve_lock); | |
e80ac6c4 AG |
384 | |
385 | return 0; | |
386 | } | |
387 | ||
29a05dee NB |
388 | /* |
389 | * Called with se_node_acl->lun_entry_mutex held. | |
e80ac6c4 | 390 | */ |
29a05dee | 391 | void core_disable_device_list_for_node( |
e80ac6c4 | 392 | struct se_lun *lun, |
29a05dee | 393 | struct se_dev_entry *orig, |
e80ac6c4 AG |
394 | struct se_node_acl *nacl, |
395 | struct se_portal_group *tpg) | |
396 | { | |
4cc987ea NB |
397 | /* |
398 | * rcu_dereference_raw protected by se_lun->lun_group symlink | |
399 | * reference to se_device->dev_group. | |
400 | */ | |
401 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); | |
e80ac6c4 AG |
402 | /* |
403 | * If the MappedLUN entry is being disabled, the entry in | |
adf653f9 | 404 | * lun->lun_deve_list must be removed now before clearing the |
e80ac6c4 AG |
405 | * struct se_dev_entry pointers below as logic in |
406 | * core_alua_do_transition_tg_pt() depends on these being present. | |
407 | * | |
408 | * deve->se_lun_acl will be NULL for demo-mode created LUNs | |
409 | * that have not been explicitly converted to MappedLUNs -> | |
adf653f9 CH |
410 | * struct se_lun_acl, but we remove deve->lun_link from |
411 | * lun->lun_deve_list. This also means that active UAs and | |
e80ac6c4 AG |
412 | * NodeACL context specific PR metadata for demo-mode |
413 | * MappedLUN *deve will be released below.. | |
414 | */ | |
adf653f9 CH |
415 | spin_lock_bh(&lun->lun_deve_lock); |
416 | list_del(&orig->lun_link); | |
417 | spin_unlock_bh(&lun->lun_deve_lock); | |
c66ac9db | 418 | /* |
29a05dee | 419 | * Disable struct se_dev_entry LUN ACL mapping |
c66ac9db | 420 | */ |
29a05dee NB |
421 | core_scsi3_ua_release_all(orig); |
422 | ||
423 | hlist_del_rcu(&orig->link); | |
80bfdfa9 | 424 | clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags); |
29a05dee NB |
425 | rcu_assign_pointer(orig->se_lun, NULL); |
426 | rcu_assign_pointer(orig->se_lun_acl, NULL); | |
427 | orig->lun_flags = 0; | |
428 | orig->creation_time = 0; | |
429 | orig->attach_count--; | |
c66ac9db | 430 | /* |
29a05dee NB |
431 | * Before firing off RCU callback, wait for any in process SPEC_I_PT=1 |
432 | * or REGISTER_AND_MOVE PR operation to complete. | |
c66ac9db | 433 | */ |
29a05dee NB |
434 | kref_put(&orig->pr_kref, target_pr_kref_release); |
435 | wait_for_completion(&orig->pr_comp); | |
436 | ||
437 | kfree_rcu(orig, rcu_head); | |
c66ac9db | 438 | |
4cc987ea | 439 | core_scsi3_free_pr_reg_from_nacl(dev, nacl); |
c66ac9db NB |
440 | } |
441 | ||
442 | /* core_clear_lun_from_tpg(): | |
443 | * | |
444 | * | |
445 | */ | |
446 | void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) | |
447 | { | |
448 | struct se_node_acl *nacl; | |
449 | struct se_dev_entry *deve; | |
c66ac9db | 450 | |
403edd78 | 451 | mutex_lock(&tpg->acl_node_mutex); |
c66ac9db | 452 | list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { |
c66ac9db | 453 | |
29a05dee NB |
454 | mutex_lock(&nacl->lun_entry_mutex); |
455 | hlist_for_each_entry_rcu(deve, &nacl->lun_entry_hlist, link) { | |
456 | struct se_lun *tmp_lun = rcu_dereference_check(deve->se_lun, | |
457 | lockdep_is_held(&nacl->lun_entry_mutex)); | |
c66ac9db | 458 | |
29a05dee NB |
459 | if (lun != tmp_lun) |
460 | continue; | |
c66ac9db | 461 | |
29a05dee | 462 | core_disable_device_list_for_node(lun, deve, nacl, tpg); |
c66ac9db | 463 | } |
29a05dee | 464 | mutex_unlock(&nacl->lun_entry_mutex); |
c66ac9db | 465 | } |
403edd78 | 466 | mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db NB |
467 | } |
468 | ||
adf653f9 | 469 | int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) |
c66ac9db | 470 | { |
adf653f9 | 471 | struct se_lun *tmp; |
c66ac9db NB |
472 | |
473 | spin_lock(&dev->se_port_lock); | |
adf653f9 | 474 | if (dev->export_count == 0x0000ffff) { |
6708bb27 | 475 | pr_warn("Reached dev->dev_port_count ==" |
c66ac9db NB |
476 | " 0x0000ffff\n"); |
477 | spin_unlock(&dev->se_port_lock); | |
adf653f9 | 478 | return -ENOSPC; |
c66ac9db NB |
479 | } |
480 | again: | |
481 | /* | |
35d1efe8 | 482 | * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device |
c66ac9db NB |
483 | * Here is the table from spc4r17 section 7.7.3.8. |
484 | * | |
485 | * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field | |
486 | * | |
487 | * Code Description | |
488 | * 0h Reserved | |
489 | * 1h Relative port 1, historically known as port A | |
490 | * 2h Relative port 2, historically known as port B | |
491 | * 3h to FFFFh Relative port 3 through 65 535 | |
492 | */ | |
adf653f9 CH |
493 | lun->lun_rtpi = dev->dev_rpti_counter++; |
494 | if (!lun->lun_rtpi) | |
c66ac9db NB |
495 | goto again; |
496 | ||
adf653f9 | 497 | list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { |
c66ac9db | 498 | /* |
35d1efe8 | 499 | * Make sure RELATIVE TARGET PORT IDENTIFIER is unique |
c66ac9db NB |
500 | * for 16-bit wrap.. |
501 | */ | |
adf653f9 | 502 | if (lun->lun_rtpi == tmp->lun_rtpi) |
c66ac9db NB |
503 | goto again; |
504 | } | |
505 | spin_unlock(&dev->se_port_lock); | |
506 | ||
c66ac9db NB |
507 | return 0; |
508 | } | |
509 | ||
0fd97ccf | 510 | static void se_release_vpd_for_dev(struct se_device *dev) |
c66ac9db NB |
511 | { |
512 | struct t10_vpd *vpd, *vpd_tmp; | |
513 | ||
0fd97ccf | 514 | spin_lock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db | 515 | list_for_each_entry_safe(vpd, vpd_tmp, |
0fd97ccf | 516 | &dev->t10_wwn.t10_vpd_list, vpd_list) { |
c66ac9db NB |
517 | list_del(&vpd->vpd_list); |
518 | kfree(vpd); | |
519 | } | |
0fd97ccf | 520 | spin_unlock(&dev->t10_wwn.t10_vpd_lock); |
c66ac9db NB |
521 | } |
522 | ||
c8045372 | 523 | static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) |
525a48a2 | 524 | { |
3e03989b RD |
525 | u32 aligned_max_sectors; |
526 | u32 alignment; | |
525a48a2 NB |
527 | /* |
528 | * Limit max_sectors to a PAGE_SIZE aligned value for modern | |
529 | * transport_allocate_data_tasks() operation. | |
530 | */ | |
3e03989b RD |
531 | alignment = max(1ul, PAGE_SIZE / block_size); |
532 | aligned_max_sectors = rounddown(max_sectors, alignment); | |
533 | ||
534 | if (max_sectors != aligned_max_sectors) | |
535 | pr_info("Rounding down aligned max_sectors from %u to %u\n", | |
536 | max_sectors, aligned_max_sectors); | |
525a48a2 | 537 | |
3e03989b | 538 | return aligned_max_sectors; |
525a48a2 NB |
539 | } |
540 | ||
6bb82612 | 541 | int core_dev_add_lun( |
c66ac9db | 542 | struct se_portal_group *tpg, |
c66ac9db | 543 | struct se_device *dev, |
6bb82612 | 544 | struct se_lun *lun) |
c66ac9db | 545 | { |
8d9efe53 | 546 | int rc; |
c66ac9db | 547 | |
d344f8a1 | 548 | rc = core_tpg_add_lun(tpg, lun, |
58d92618 | 549 | TRANSPORT_LUNFLAGS_READ_WRITE, dev); |
8d9efe53 | 550 | if (rc < 0) |
6bb82612 | 551 | return rc; |
c66ac9db | 552 | |
f2d30680 | 553 | pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from" |
e3d6f909 | 554 | " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), |
2af7973a | 555 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
2dca673b | 556 | tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); |
c66ac9db NB |
557 | /* |
558 | * Update LUN maps for dynamically added initiators when | |
559 | * generate_node_acl is enabled. | |
560 | */ | |
e3d6f909 | 561 | if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { |
c66ac9db | 562 | struct se_node_acl *acl; |
403edd78 NB |
563 | |
564 | mutex_lock(&tpg->acl_node_mutex); | |
c66ac9db | 565 | list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { |
052605c6 NB |
566 | if (acl->dynamic_node_acl && |
567 | (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only || | |
568 | !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) { | |
df9766ca | 569 | core_tpg_add_node_to_devs(acl, tpg, lun); |
c66ac9db NB |
570 | } |
571 | } | |
403edd78 | 572 | mutex_unlock(&tpg->acl_node_mutex); |
c66ac9db NB |
573 | } |
574 | ||
6bb82612 | 575 | return 0; |
c66ac9db NB |
576 | } |
577 | ||
578 | /* core_dev_del_lun(): | |
579 | * | |
580 | * | |
581 | */ | |
cd9d7cba | 582 | void core_dev_del_lun( |
c66ac9db | 583 | struct se_portal_group *tpg, |
cd9d7cba | 584 | struct se_lun *lun) |
c66ac9db | 585 | { |
f2d30680 | 586 | pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from" |
e3d6f909 | 587 | " device object\n", tpg->se_tpg_tfo->get_fabric_name(), |
cd9d7cba | 588 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, |
e3d6f909 | 589 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db | 590 | |
cd9d7cba | 591 | core_tpg_remove_lun(tpg, lun); |
c66ac9db NB |
592 | } |
593 | ||
c66ac9db NB |
594 | struct se_lun_acl *core_dev_init_initiator_node_lun_acl( |
595 | struct se_portal_group *tpg, | |
fcf29481 | 596 | struct se_node_acl *nacl, |
f2d30680 | 597 | u64 mapped_lun, |
c66ac9db NB |
598 | int *ret) |
599 | { | |
600 | struct se_lun_acl *lacl; | |
c66ac9db | 601 | |
fcf29481 | 602 | if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { |
6708bb27 | 603 | pr_err("%s InitiatorName exceeds maximum size.\n", |
e3d6f909 | 604 | tpg->se_tpg_tfo->get_fabric_name()); |
c66ac9db NB |
605 | *ret = -EOVERFLOW; |
606 | return NULL; | |
607 | } | |
c66ac9db | 608 | lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); |
6708bb27 AG |
609 | if (!lacl) { |
610 | pr_err("Unable to allocate memory for struct se_lun_acl.\n"); | |
c66ac9db NB |
611 | *ret = -ENOMEM; |
612 | return NULL; | |
613 | } | |
614 | ||
c66ac9db NB |
615 | lacl->mapped_lun = mapped_lun; |
616 | lacl->se_lun_nacl = nacl; | |
fcf29481 NB |
617 | snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", |
618 | nacl->initiatorname); | |
c66ac9db NB |
619 | |
620 | return lacl; | |
621 | } | |
622 | ||
623 | int core_dev_add_initiator_node_lun_acl( | |
624 | struct se_portal_group *tpg, | |
625 | struct se_lun_acl *lacl, | |
6bb82612 | 626 | struct se_lun *lun, |
c66ac9db NB |
627 | u32 lun_access) |
628 | { | |
6bb82612 | 629 | struct se_node_acl *nacl = lacl->se_lun_nacl; |
4cc987ea NB |
630 | /* |
631 | * rcu_dereference_raw protected by se_lun->lun_group symlink | |
632 | * reference to se_device->dev_group. | |
633 | */ | |
634 | struct se_device *dev = rcu_dereference_raw(lun->lun_se_dev); | |
c66ac9db | 635 | |
6708bb27 | 636 | if (!nacl) |
c66ac9db NB |
637 | return -EINVAL; |
638 | ||
639 | if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && | |
640 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) | |
641 | lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; | |
642 | ||
643 | lacl->se_lun = lun; | |
644 | ||
e80ac6c4 AG |
645 | if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, |
646 | lun_access, nacl, tpg) < 0) | |
c66ac9db NB |
647 | return -EINVAL; |
648 | ||
f2d30680 | 649 | pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for " |
e3d6f909 | 650 | " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), |
6bb82612 | 651 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, |
c66ac9db NB |
652 | (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", |
653 | lacl->initiatorname); | |
654 | /* | |
655 | * Check to see if there are any existing persistent reservation APTPL | |
656 | * pre-registrations that need to be enabled for this LUN ACL.. | |
657 | */ | |
4cc987ea | 658 | core_scsi3_check_aptpl_registration(dev, tpg, lun, nacl, |
e2480563 | 659 | lacl->mapped_lun); |
c66ac9db NB |
660 | return 0; |
661 | } | |
662 | ||
c66ac9db | 663 | int core_dev_del_initiator_node_lun_acl( |
c66ac9db NB |
664 | struct se_lun *lun, |
665 | struct se_lun_acl *lacl) | |
666 | { | |
adf653f9 | 667 | struct se_portal_group *tpg = lun->lun_tpg; |
c66ac9db | 668 | struct se_node_acl *nacl; |
29a05dee | 669 | struct se_dev_entry *deve; |
c66ac9db NB |
670 | |
671 | nacl = lacl->se_lun_nacl; | |
6708bb27 | 672 | if (!nacl) |
c66ac9db NB |
673 | return -EINVAL; |
674 | ||
29a05dee NB |
675 | mutex_lock(&nacl->lun_entry_mutex); |
676 | deve = target_nacl_find_deve(nacl, lacl->mapped_lun); | |
677 | if (deve) | |
678 | core_disable_device_list_for_node(lun, deve, nacl, tpg); | |
679 | mutex_unlock(&nacl->lun_entry_mutex); | |
c66ac9db | 680 | |
f2d30680 HR |
681 | pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for" |
682 | " InitiatorNode: %s Mapped LUN: %llu\n", | |
e3d6f909 AG |
683 | tpg->se_tpg_tfo->get_fabric_name(), |
684 | tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, | |
c66ac9db NB |
685 | lacl->initiatorname, lacl->mapped_lun); |
686 | ||
687 | return 0; | |
688 | } | |
689 | ||
690 | void core_dev_free_initiator_node_lun_acl( | |
691 | struct se_portal_group *tpg, | |
692 | struct se_lun_acl *lacl) | |
693 | { | |
6708bb27 | 694 | pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" |
f2d30680 | 695 | " Mapped LUN: %llu\n", tpg->se_tpg_tfo->get_fabric_name(), |
e3d6f909 AG |
696 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
697 | tpg->se_tpg_tfo->get_fabric_name(), | |
c66ac9db NB |
698 | lacl->initiatorname, lacl->mapped_lun); |
699 | ||
700 | kfree(lacl); | |
701 | } | |
702 | ||
0fd97ccf CH |
703 | static void scsi_dump_inquiry(struct se_device *dev) |
704 | { | |
705 | struct t10_wwn *wwn = &dev->t10_wwn; | |
706 | char buf[17]; | |
707 | int i, device_type; | |
708 | /* | |
709 | * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer | |
710 | */ | |
711 | for (i = 0; i < 8; i++) | |
712 | if (wwn->vendor[i] >= 0x20) | |
713 | buf[i] = wwn->vendor[i]; | |
714 | else | |
715 | buf[i] = ' '; | |
716 | buf[i] = '\0'; | |
717 | pr_debug(" Vendor: %s\n", buf); | |
718 | ||
719 | for (i = 0; i < 16; i++) | |
720 | if (wwn->model[i] >= 0x20) | |
721 | buf[i] = wwn->model[i]; | |
722 | else | |
723 | buf[i] = ' '; | |
724 | buf[i] = '\0'; | |
725 | pr_debug(" Model: %s\n", buf); | |
726 | ||
727 | for (i = 0; i < 4; i++) | |
728 | if (wwn->revision[i] >= 0x20) | |
729 | buf[i] = wwn->revision[i]; | |
730 | else | |
731 | buf[i] = ' '; | |
732 | buf[i] = '\0'; | |
733 | pr_debug(" Revision: %s\n", buf); | |
734 | ||
735 | device_type = dev->transport->get_device_type(dev); | |
736 | pr_debug(" Type: %s ", scsi_device_type(device_type)); | |
0fd97ccf CH |
737 | } |
738 | ||
739 | struct se_device *target_alloc_device(struct se_hba *hba, const char *name) | |
740 | { | |
741 | struct se_device *dev; | |
4863e525 | 742 | struct se_lun *xcopy_lun; |
0fd97ccf | 743 | |
0a06d430 | 744 | dev = hba->backend->ops->alloc_device(hba, name); |
0fd97ccf CH |
745 | if (!dev) |
746 | return NULL; | |
747 | ||
0ff87549 | 748 | dev->dev_link_magic = SE_DEV_LINK_MAGIC; |
0fd97ccf | 749 | dev->se_hba = hba; |
0a06d430 | 750 | dev->transport = hba->backend->ops; |
2ed22c9c | 751 | dev->prot_length = sizeof(struct se_dif_v1_tuple); |
4cc987ea | 752 | dev->hba_index = hba->hba_index; |
0fd97ccf CH |
753 | |
754 | INIT_LIST_HEAD(&dev->dev_list); | |
755 | INIT_LIST_HEAD(&dev->dev_sep_list); | |
756 | INIT_LIST_HEAD(&dev->dev_tmr_list); | |
757 | INIT_LIST_HEAD(&dev->delayed_cmd_list); | |
758 | INIT_LIST_HEAD(&dev->state_list); | |
759 | INIT_LIST_HEAD(&dev->qf_cmd_list); | |
d9ea32bf | 760 | INIT_LIST_HEAD(&dev->g_dev_node); |
0fd97ccf CH |
761 | spin_lock_init(&dev->execute_task_lock); |
762 | spin_lock_init(&dev->delayed_cmd_lock); | |
763 | spin_lock_init(&dev->dev_reservation_lock); | |
764 | spin_lock_init(&dev->se_port_lock); | |
765 | spin_lock_init(&dev->se_tmr_lock); | |
766 | spin_lock_init(&dev->qf_cmd_lock); | |
68ff9b9b | 767 | sema_init(&dev->caw_sem, 1); |
0fd97ccf CH |
768 | atomic_set(&dev->dev_ordered_id, 0); |
769 | INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); | |
770 | spin_lock_init(&dev->t10_wwn.t10_vpd_lock); | |
771 | INIT_LIST_HEAD(&dev->t10_pr.registration_list); | |
772 | INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); | |
773 | spin_lock_init(&dev->t10_pr.registration_lock); | |
774 | spin_lock_init(&dev->t10_pr.aptpl_reg_lock); | |
775 | INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); | |
776 | spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); | |
c66094bf HR |
777 | INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); |
778 | spin_lock_init(&dev->t10_alua.lba_map_lock); | |
0fd97ccf | 779 | |
0fd97ccf CH |
780 | dev->t10_wwn.t10_dev = dev; |
781 | dev->t10_alua.t10_dev = dev; | |
782 | ||
783 | dev->dev_attrib.da_dev = dev; | |
adfa9570 | 784 | dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; |
814e5b45 CH |
785 | dev->dev_attrib.emulate_dpo = 1; |
786 | dev->dev_attrib.emulate_fua_write = 1; | |
787 | dev->dev_attrib.emulate_fua_read = 1; | |
0fd97ccf CH |
788 | dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; |
789 | dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; | |
790 | dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; | |
791 | dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; | |
792 | dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; | |
0123a9ec | 793 | dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; |
d397a445 | 794 | dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; |
2ed22c9c | 795 | dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; |
0fd97ccf | 796 | dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; |
92404e60 | 797 | dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; |
0fd97ccf CH |
798 | dev->dev_attrib.is_nonrot = DA_IS_NONROT; |
799 | dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; | |
800 | dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; | |
801 | dev->dev_attrib.max_unmap_block_desc_count = | |
802 | DA_MAX_UNMAP_BLOCK_DESC_COUNT; | |
803 | dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; | |
804 | dev->dev_attrib.unmap_granularity_alignment = | |
805 | DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; | |
773cbaf7 | 806 | dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; |
0fd97ccf | 807 | |
4863e525 | 808 | xcopy_lun = &dev->xcopy_lun; |
4cc987ea | 809 | rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); |
4863e525 | 810 | init_completion(&xcopy_lun->lun_ref_comp); |
adf653f9 CH |
811 | INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); |
812 | INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); | |
813 | mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); | |
814 | xcopy_lun->lun_tpg = &xcopy_pt_tpg; | |
4863e525 | 815 | |
0fd97ccf CH |
816 | return dev; |
817 | } | |
818 | ||
819 | int target_configure_device(struct se_device *dev) | |
820 | { | |
821 | struct se_hba *hba = dev->se_hba; | |
822 | int ret; | |
823 | ||
824 | if (dev->dev_flags & DF_CONFIGURED) { | |
825 | pr_err("se_dev->se_dev_ptr already set for storage" | |
826 | " object\n"); | |
827 | return -EEXIST; | |
828 | } | |
829 | ||
830 | ret = dev->transport->configure_device(dev); | |
831 | if (ret) | |
832 | goto out; | |
0fd97ccf CH |
833 | /* |
834 | * XXX: there is not much point to have two different values here.. | |
835 | */ | |
836 | dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; | |
837 | dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; | |
838 | ||
839 | /* | |
840 | * Align max_hw_sectors down to PAGE_SIZE I/O transfers | |
841 | */ | |
842 | dev->dev_attrib.hw_max_sectors = | |
843 | se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, | |
844 | dev->dev_attrib.hw_block_size); | |
046ba642 | 845 | dev->dev_attrib.optimal_sectors = dev->dev_attrib.hw_max_sectors; |
0fd97ccf CH |
846 | |
847 | dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); | |
848 | dev->creation_time = get_jiffies_64(); | |
849 | ||
0fd97ccf CH |
850 | ret = core_setup_alua(dev); |
851 | if (ret) | |
852 | goto out; | |
853 | ||
854 | /* | |
855 | * Startup the struct se_device processing thread | |
856 | */ | |
857 | dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, | |
858 | dev->transport->name); | |
859 | if (!dev->tmr_wq) { | |
860 | pr_err("Unable to create tmr workqueue for %s\n", | |
861 | dev->transport->name); | |
862 | ret = -ENOMEM; | |
863 | goto out_free_alua; | |
864 | } | |
865 | ||
866 | /* | |
867 | * Setup work_queue for QUEUE_FULL | |
868 | */ | |
869 | INIT_WORK(&dev->qf_work_queue, target_qf_do_work); | |
870 | ||
871 | /* | |
872 | * Preload the initial INQUIRY const values if we are doing | |
873 | * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI | |
874 | * passthrough because this is being provided by the backend LLD. | |
875 | */ | |
a3541703 | 876 | if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { |
0fd97ccf CH |
877 | strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); |
878 | strncpy(&dev->t10_wwn.model[0], | |
879 | dev->transport->inquiry_prod, 16); | |
880 | strncpy(&dev->t10_wwn.revision[0], | |
881 | dev->transport->inquiry_rev, 4); | |
882 | } | |
883 | ||
884 | scsi_dump_inquiry(dev); | |
885 | ||
886 | spin_lock(&hba->device_lock); | |
887 | hba->dev_count++; | |
888 | spin_unlock(&hba->device_lock); | |
d9ea32bf NB |
889 | |
890 | mutex_lock(&g_device_mutex); | |
891 | list_add_tail(&dev->g_dev_node, &g_device_list); | |
892 | mutex_unlock(&g_device_mutex); | |
893 | ||
5f7da044 NB |
894 | dev->dev_flags |= DF_CONFIGURED; |
895 | ||
0fd97ccf CH |
896 | return 0; |
897 | ||
898 | out_free_alua: | |
899 | core_alua_free_lu_gp_mem(dev); | |
900 | out: | |
901 | se_release_vpd_for_dev(dev); | |
902 | return ret; | |
903 | } | |
904 | ||
905 | void target_free_device(struct se_device *dev) | |
906 | { | |
907 | struct se_hba *hba = dev->se_hba; | |
908 | ||
909 | WARN_ON(!list_empty(&dev->dev_sep_list)); | |
910 | ||
911 | if (dev->dev_flags & DF_CONFIGURED) { | |
912 | destroy_workqueue(dev->tmr_wq); | |
913 | ||
d9ea32bf NB |
914 | mutex_lock(&g_device_mutex); |
915 | list_del(&dev->g_dev_node); | |
916 | mutex_unlock(&g_device_mutex); | |
917 | ||
0fd97ccf CH |
918 | spin_lock(&hba->device_lock); |
919 | hba->dev_count--; | |
920 | spin_unlock(&hba->device_lock); | |
921 | } | |
922 | ||
923 | core_alua_free_lu_gp_mem(dev); | |
229d4f11 | 924 | core_alua_set_lba_map(dev, NULL, 0, 0); |
0fd97ccf CH |
925 | core_scsi3_free_all_registrations(dev); |
926 | se_release_vpd_for_dev(dev); | |
927 | ||
2ed22c9c NB |
928 | if (dev->transport->free_prot) |
929 | dev->transport->free_prot(dev); | |
930 | ||
0fd97ccf CH |
931 | dev->transport->free_device(dev); |
932 | } | |
933 | ||
c66ac9db NB |
934 | int core_dev_setup_virtual_lun0(void) |
935 | { | |
936 | struct se_hba *hba; | |
937 | struct se_device *dev; | |
db5d1c3c | 938 | char buf[] = "rd_pages=8,rd_nullio=1"; |
c66ac9db NB |
939 | int ret; |
940 | ||
6708bb27 | 941 | hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); |
c66ac9db NB |
942 | if (IS_ERR(hba)) |
943 | return PTR_ERR(hba); | |
944 | ||
0fd97ccf CH |
945 | dev = target_alloc_device(hba, "virt_lun0"); |
946 | if (!dev) { | |
c66ac9db | 947 | ret = -ENOMEM; |
0fd97ccf | 948 | goto out_free_hba; |
c66ac9db | 949 | } |
c66ac9db | 950 | |
0a06d430 | 951 | hba->backend->ops->set_configfs_dev_params(dev, buf, sizeof(buf)); |
c66ac9db | 952 | |
0fd97ccf CH |
953 | ret = target_configure_device(dev); |
954 | if (ret) | |
955 | goto out_free_se_dev; | |
c66ac9db | 956 | |
0fd97ccf CH |
957 | lun0_hba = hba; |
958 | g_lun0_dev = dev; | |
c66ac9db | 959 | return 0; |
0fd97ccf CH |
960 | |
961 | out_free_se_dev: | |
962 | target_free_device(dev); | |
963 | out_free_hba: | |
964 | core_delete_hba(hba); | |
c66ac9db NB |
965 | return ret; |
966 | } | |
967 | ||
968 | ||
969 | void core_dev_release_virtual_lun0(void) | |
970 | { | |
e3d6f909 | 971 | struct se_hba *hba = lun0_hba; |
c66ac9db | 972 | |
6708bb27 | 973 | if (!hba) |
c66ac9db NB |
974 | return; |
975 | ||
e3d6f909 | 976 | if (g_lun0_dev) |
0fd97ccf | 977 | target_free_device(g_lun0_dev); |
c66ac9db NB |
978 | core_delete_hba(hba); |
979 | } | |
7bfea53b AG |
980 | |
981 | /* | |
982 | * Common CDB parsing for kernel and user passthrough. | |
983 | */ | |
984 | sense_reason_t | |
985 | passthrough_parse_cdb(struct se_cmd *cmd, | |
986 | sense_reason_t (*exec_cmd)(struct se_cmd *cmd)) | |
987 | { | |
988 | unsigned char *cdb = cmd->t_task_cdb; | |
989 | ||
990 | /* | |
991 | * Clear a lun set in the cdb if the initiator talking to use spoke | |
992 | * and old standards version, as we can't assume the underlying device | |
993 | * won't choke up on it. | |
994 | */ | |
995 | switch (cdb[0]) { | |
996 | case READ_10: /* SBC - RDProtect */ | |
997 | case READ_12: /* SBC - RDProtect */ | |
998 | case READ_16: /* SBC - RDProtect */ | |
999 | case SEND_DIAGNOSTIC: /* SPC - SELF-TEST Code */ | |
1000 | case VERIFY: /* SBC - VRProtect */ | |
1001 | case VERIFY_16: /* SBC - VRProtect */ | |
1002 | case WRITE_VERIFY: /* SBC - VRProtect */ | |
1003 | case WRITE_VERIFY_12: /* SBC - VRProtect */ | |
1004 | case MAINTENANCE_IN: /* SPC - Parameter Data Format for SA RTPG */ | |
1005 | break; | |
1006 | default: | |
1007 | cdb[1] &= 0x1f; /* clear logical unit number */ | |
1008 | break; | |
1009 | } | |
1010 | ||
1011 | /* | |
1012 | * For REPORT LUNS we always need to emulate the response, for everything | |
1013 | * else, pass it up. | |
1014 | */ | |
1015 | if (cdb[0] == REPORT_LUNS) { | |
1016 | cmd->execute_cmd = spc_emulate_report_luns; | |
1017 | return TCM_NO_SENSE; | |
1018 | } | |
1019 | ||
1020 | /* Set DATA_CDB flag for ops that should have it */ | |
1021 | switch (cdb[0]) { | |
1022 | case READ_6: | |
1023 | case READ_10: | |
1024 | case READ_12: | |
1025 | case READ_16: | |
1026 | case WRITE_6: | |
1027 | case WRITE_10: | |
1028 | case WRITE_12: | |
1029 | case WRITE_16: | |
1030 | case WRITE_VERIFY: | |
1031 | case WRITE_VERIFY_12: | |
1032 | case 0x8e: /* WRITE_VERIFY_16 */ | |
1033 | case COMPARE_AND_WRITE: | |
1034 | case XDWRITEREAD_10: | |
1035 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; | |
1036 | break; | |
1037 | case VARIABLE_LENGTH_CMD: | |
1038 | switch (get_unaligned_be16(&cdb[8])) { | |
1039 | case READ_32: | |
1040 | case WRITE_32: | |
1041 | case 0x0c: /* WRITE_VERIFY_32 */ | |
1042 | case XDWRITEREAD_32: | |
1043 | cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB; | |
1044 | break; | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | cmd->execute_cmd = exec_cmd; | |
1049 | ||
1050 | return TCM_NO_SENSE; | |
1051 | } | |
1052 | EXPORT_SYMBOL(passthrough_parse_cdb); |