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drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blobceaf1c7b1d17b85113fe94c80a28fe0441e41540
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3 * This file contains tcm implementation using v4 configfs fabric infrastructure
4 * for QLogic target mode HBAs
5 *
6 * (c) Copyright 2010-2013 Datera, Inc.
7 *
8 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 *
10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
11 * the TCM_FC / Open-FCoE.org fabric module.
12 *
13 * Copyright (c) 2010 Cisco Systems, Inc
14 *
15 ****************************************************************************/
16
17
18 #include <linux/module.h>
19 #include <linux/utsname.h>
20 #include <linux/vmalloc.h>
21 #include <linux/list.h>
22 #include <linux/slab.h>
23 #include <linux/types.h>
24 #include <linux/string.h>
25 #include <linux/configfs.h>
26 #include <linux/ctype.h>
27 #include <linux/unaligned.h>
28 #include <scsi/scsi_host.h>
29 #include <target/target_core_base.h>
30 #include <target/target_core_fabric.h>
31
32 #include "qla_def.h"
33 #include "qla_target.h"
34 #include "tcm_qla2xxx.h"
35
36 static struct workqueue_struct *tcm_qla2xxx_free_wq;
37
38 /*
39 * Parse WWN.
40 * If strict, we require lower-case hex and colon separators to be sure
41 * the name is the same as what would be generated by ft_format_wwn()
42 * so the name and wwn are mapped one-to-one.
43 */
44 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
45 {
46 const char *cp;
47 char c;
48 u32 nibble;
49 u32 byte = 0;
50 u32 pos = 0;
51 u32 err;
52
53 *wwn = 0;
54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
55 c = *cp;
56 if (c == '\n' && cp[1] == '\0')
57 continue;
58 if (strict && pos++ == 2 && byte++ < 7) {
59 pos = 0;
60 if (c == ':')
61 continue;
62 err = 1;
63 goto fail;
64 }
65 if (c == '\0') {
66 err = 2;
67 if (strict && byte != 8)
68 goto fail;
69 return cp - name;
70 }
71 err = 3;
72 if (isdigit(c))
73 nibble = c - '0';
74 else if (isxdigit(c) && (islower(c) || !strict))
75 nibble = tolower(c) - 'a' + 10;
76 else
77 goto fail;
78 *wwn = (*wwn << 4) | nibble;
79 }
80 err = 4;
81 fail:
82 pr_debug("err %u len %zu pos %u byte %u\n",
83 err, cp - name, pos, byte);
84 return -1;
85 }
86
87 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
88 {
89 u8 b[8];
90
91 put_unaligned_be64(wwn, b);
92 return snprintf(buf, len,
93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
95 }
96
97 /*
98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
99 */
100 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
101 {
102 unsigned int i, j;
103 u8 wwn[8];
104
105 memset(wwn, 0, sizeof(wwn));
106
107 /* Validate and store the new name */
108 for (i = 0, j = 0; i < 16; i++) {
109 int value;
110
111 value = hex_to_bin(*ns++);
112 if (value >= 0)
113 j = (j << 4) | value;
114 else
115 return -EINVAL;
116
117 if (i % 2) {
118 wwn[i/2] = j & 0xff;
119 j = 0;
120 }
121 }
122
123 *nm = wwn_to_u64(wwn);
124 return 0;
125 }
126
127 /*
128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
129 * store_fc_host_vport_create()
130 */
131 static int tcm_qla2xxx_npiv_parse_wwn(
132 const char *name,
133 size_t count,
134 u64 *wwpn,
135 u64 *wwnn)
136 {
137 unsigned int cnt = count;
138 int rc;
139
140 *wwpn = 0;
141 *wwnn = 0;
142
143 /* count may include a LF at end of string */
144 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
145 cnt--;
146
147 /* validate we have enough characters for WWPN */
148 if ((cnt != (16+1+16)) || (name[16] != ':'))
149 return -EINVAL;
150
151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
152 if (rc != 0)
153 return rc;
154
155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
156 if (rc != 0)
157 return rc;
158
159 return 0;
160 }
161
162 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
163 {
164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
165 struct tcm_qla2xxx_tpg, se_tpg);
166 struct tcm_qla2xxx_lport *lport = tpg->lport;
167
168 return lport->lport_naa_name;
169 }
170
171 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
172 {
173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
174 struct tcm_qla2xxx_tpg, se_tpg);
175 return tpg->lport_tpgt;
176 }
177
178 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
179 {
180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
181 struct tcm_qla2xxx_tpg, se_tpg);
182
183 return tpg->tpg_attrib.generate_node_acls;
184 }
185
186 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
187 {
188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
189 struct tcm_qla2xxx_tpg, se_tpg);
190
191 return tpg->tpg_attrib.cache_dynamic_acls;
192 }
193
194 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
195 {
196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
197 struct tcm_qla2xxx_tpg, se_tpg);
198
199 return tpg->tpg_attrib.demo_mode_write_protect;
200 }
201
202 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
203 {
204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
205 struct tcm_qla2xxx_tpg, se_tpg);
206
207 return tpg->tpg_attrib.prod_mode_write_protect;
208 }
209
210 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
211 {
212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
213 struct tcm_qla2xxx_tpg, se_tpg);
214
215 return tpg->tpg_attrib.demo_mode_login_only;
216 }
217
218 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
219 {
220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
221 struct tcm_qla2xxx_tpg, se_tpg);
222
223 return tpg->tpg_attrib.fabric_prot_type;
224 }
225
226 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
227 {
228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
229 struct tcm_qla2xxx_tpg, se_tpg);
230
231 return tpg->lport_tpgt;
232 }
233
234 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
235 {
236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
237 struct qla_tgt_mgmt_cmd, free_work);
238
239 transport_generic_free_cmd(&mcmd->se_cmd, 0);
240 }
241
242 /*
243 * Called from qla_target_template->free_mcmd(), and will call
244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
245 * release callback. qla_hw_data->hardware_lock is expected to be held
246 */
247 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
248 {
249 if (!mcmd)
250 return;
251 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
252 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
253 }
254
255 static void tcm_qla2xxx_complete_free(struct work_struct *work)
256 {
257 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
258 unsigned long flags;
259
260 cmd->cmd_in_wq = 0;
261
262 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
263
264 /* To do: protect all tgt_counters manipulations with proper locking. */
265 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
266 cmd->trc_flags |= TRC_CMD_FREE;
267 cmd->cmd_sent_to_fw = 0;
268
269 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);
270 list_del_init(&cmd->sess_cmd_list);
271 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);
272
273 transport_generic_free_cmd(&cmd->se_cmd, 0);
274 }
275
276 static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess)
277 {
278 struct se_session *se_sess = sess->se_sess;
279 struct qla_tgt_cmd *cmd;
280 int tag, cpu;
281
282 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
283 if (tag < 0)
284 return NULL;
285
286 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
287 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
288 cmd->se_cmd.map_tag = tag;
289 cmd->se_cmd.map_cpu = cpu;
290
291 return cmd;
292 }
293
294 static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd)
295 {
296 target_free_tag(cmd->sess->se_sess, &cmd->se_cmd);
297 }
298
299 /*
300 * Called from qla_target_template->free_cmd(), and will call
301 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
302 * release callback. qla_hw_data->hardware_lock is expected to be held
303 */
304 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
305 {
306 cmd->qpair->tgt_counters.core_qla_free_cmd++;
307 cmd->cmd_in_wq = 1;
308
309 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
310 cmd->trc_flags |= TRC_CMD_DONE;
311
312 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
313 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
314 }
315
316 /*
317 * Called from struct target_core_fabric_ops->check_stop_free() context
318 */
319 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
320 {
321 struct qla_tgt_cmd *cmd;
322
323 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
324 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
325 cmd->trc_flags |= TRC_CMD_CHK_STOP;
326 }
327
328 return target_put_sess_cmd(se_cmd);
329 }
330
331 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
332 * fabric descriptor @se_cmd command to release
333 */
334 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
335 {
336 struct qla_tgt_cmd *cmd;
337
338 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
339 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
340 struct qla_tgt_mgmt_cmd, se_cmd);
341 qlt_free_mcmd(mcmd);
342 return;
343 }
344 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
345
346 if (WARN_ON(cmd->cmd_sent_to_fw))
347 return;
348
349 qlt_free_cmd(cmd);
350 }
351
352 static void tcm_qla2xxx_release_session(struct kref *kref)
353 {
354 struct fc_port *sess = container_of(kref,
355 struct fc_port, sess_kref);
356
357 qlt_unreg_sess(sess);
358 }
359
360 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
361 {
362 if (!sess)
363 return;
364
365 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
366 }
367
368 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
369 {
370 struct fc_port *sess = se_sess->fabric_sess_ptr;
371
372 BUG_ON(!sess);
373
374 target_stop_session(se_sess);
375
376 sess->explicit_logout = 1;
377 tcm_qla2xxx_put_sess(sess);
378 }
379
380 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
381 {
382 struct qla_tgt_cmd *cmd = container_of(se_cmd,
383 struct qla_tgt_cmd, se_cmd);
384
385 if (cmd->aborted) {
386 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
387 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
388 * already kick start the free.
389 */
390 pr_debug("write_pending aborted cmd[%p] refcount %d "
391 "transport_state %x, t_state %x, se_cmd_flags %x\n",
392 cmd, kref_read(&cmd->se_cmd.cmd_kref),
393 cmd->se_cmd.transport_state,
394 cmd->se_cmd.t_state,
395 cmd->se_cmd.se_cmd_flags);
396 transport_generic_request_failure(&cmd->se_cmd,
397 TCM_CHECK_CONDITION_ABORT_CMD);
398 return 0;
399 }
400 cmd->trc_flags |= TRC_XFR_RDY;
401 cmd->bufflen = se_cmd->data_length;
402 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
403
404 cmd->sg_cnt = se_cmd->t_data_nents;
405 cmd->sg = se_cmd->t_data_sg;
406
407 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
408 cmd->prot_sg = se_cmd->t_prot_sg;
409 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
410 se_cmd->pi_err = 0;
411
412 /*
413 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
414 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
415 */
416 return qlt_rdy_to_xfer(cmd);
417 }
418
419 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
420 {
421 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
422 struct qla_tgt_cmd *cmd = container_of(se_cmd,
423 struct qla_tgt_cmd, se_cmd);
424 return cmd->state;
425 }
426
427 return 0;
428 }
429
430 /*
431 * Called from process context in qla_target.c:qlt_do_work() code
432 */
433 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
434 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
435 int data_dir, int bidi)
436 {
437 struct se_cmd *se_cmd = &cmd->se_cmd;
438 struct se_session *se_sess;
439 struct fc_port *sess;
440 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
441 struct se_portal_group *se_tpg;
442 struct tcm_qla2xxx_tpg *tpg;
443 #endif
444 int rc, target_flags = TARGET_SCF_ACK_KREF;
445 unsigned long flags;
446
447 if (bidi)
448 target_flags |= TARGET_SCF_BIDI_OP;
449
450 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
451 target_flags |= TARGET_SCF_USE_CPUID;
452
453 sess = cmd->sess;
454 if (!sess) {
455 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
456 return -EINVAL;
457 }
458
459 se_sess = sess->se_sess;
460 if (!se_sess) {
461 pr_err("Unable to locate active struct se_session\n");
462 return -EINVAL;
463 }
464
465 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
466 se_tpg = se_sess->se_tpg;
467 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
468 if (unlikely(tpg->tpg_attrib.jam_host)) {
469 /* return, and dont run target_submit_cmd,discarding command */
470 return 0;
471 }
472 #endif
473 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
474
475 spin_lock_irqsave(&sess->sess_cmd_lock, flags);
476 list_add_tail(&cmd->sess_cmd_list, &sess->sess_cmd_list);
477 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);
478
479 rc = target_init_cmd(se_cmd, se_sess, &cmd->sense_buffer[0],
480 cmd->unpacked_lun, data_length, fcp_task_attr,
481 data_dir, target_flags);
482 if (rc)
483 return rc;
484
485 if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0,
486 GFP_KERNEL))
487 return 0;
488
489 target_submit(se_cmd);
490 return 0;
491 }
492
493 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
494 {
495 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
496
497 /*
498 * Ensure that the complete FCP WRITE payload has been received.
499 * Otherwise return an exception via CHECK_CONDITION status.
500 */
501 cmd->cmd_in_wq = 0;
502 cmd->cmd_sent_to_fw = 0;
503 if (cmd->aborted) {
504 transport_generic_request_failure(&cmd->se_cmd,
505 TCM_CHECK_CONDITION_ABORT_CMD);
506 return;
507 }
508
509 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
510 if (!cmd->write_data_transferred) {
511 switch (cmd->dif_err_code) {
512 case DIF_ERR_GRD:
513 cmd->se_cmd.pi_err =
514 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
515 break;
516 case DIF_ERR_REF:
517 cmd->se_cmd.pi_err =
518 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
519 break;
520 case DIF_ERR_APP:
521 cmd->se_cmd.pi_err =
522 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
523 break;
524 case DIF_ERR_NONE:
525 default:
526 break;
527 }
528
529 if (cmd->se_cmd.pi_err)
530 transport_generic_request_failure(&cmd->se_cmd,
531 cmd->se_cmd.pi_err);
532 else
533 transport_generic_request_failure(&cmd->se_cmd,
534 TCM_CHECK_CONDITION_ABORT_CMD);
535
536 return;
537 }
538
539 return target_execute_cmd(&cmd->se_cmd);
540 }
541
542 /*
543 * Called from qla_target.c:qlt_do_ctio_completion()
544 */
545 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
546 {
547 cmd->trc_flags |= TRC_DATA_IN;
548 cmd->cmd_in_wq = 1;
549 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
550 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
551 }
552
553 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
554 {
555 return 0;
556 }
557
558 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
559 uint16_t *pfw_prot_opts)
560 {
561 struct se_cmd *se_cmd = &cmd->se_cmd;
562
563 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
564 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
565
566 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
567 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
568
569 return 0;
570 }
571
572 /*
573 * Called from qla_target.c:qlt_issue_task_mgmt()
574 */
575 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
576 uint16_t tmr_func, uint32_t tag)
577 {
578 struct fc_port *sess = mcmd->sess;
579 struct se_cmd *se_cmd = &mcmd->se_cmd;
580 int transl_tmr_func = 0;
581
582 switch (tmr_func) {
583 case QLA_TGT_ABTS:
584 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
585 transl_tmr_func = TMR_ABORT_TASK;
586 break;
587 case QLA_TGT_2G_ABORT_TASK:
588 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
589 transl_tmr_func = TMR_ABORT_TASK;
590 break;
591 case QLA_TGT_CLEAR_ACA:
592 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
593 transl_tmr_func = TMR_CLEAR_ACA;
594 break;
595 case QLA_TGT_TARGET_RESET:
596 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
597 transl_tmr_func = TMR_TARGET_WARM_RESET;
598 break;
599 case QLA_TGT_LUN_RESET:
600 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
601 transl_tmr_func = TMR_LUN_RESET;
602 break;
603 case QLA_TGT_CLEAR_TS:
604 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
605 transl_tmr_func = TMR_CLEAR_TASK_SET;
606 break;
607 case QLA_TGT_ABORT_TS:
608 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
609 transl_tmr_func = TMR_ABORT_TASK_SET;
610 break;
611 default:
612 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
613 sess->vha->host_no, tmr_func);
614 return -ENOSYS;
615 }
616
617 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
618 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
619 }
620
621 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
622 uint64_t tag)
623 {
624 struct qla_tgt_cmd *cmd;
625 unsigned long flags;
626
627 if (!sess->se_sess)
628 return NULL;
629
630 spin_lock_irqsave(&sess->sess_cmd_lock, flags);
631 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) {
632 if (cmd->se_cmd.tag == tag)
633 goto done;
634 }
635 cmd = NULL;
636 done:
637 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);
638
639 return cmd;
640 }
641
642 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
643 {
644 struct qla_tgt_cmd *cmd = container_of(se_cmd,
645 struct qla_tgt_cmd, se_cmd);
646
647 if (cmd->aborted) {
648 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
649 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
650 * already kick start the free.
651 */
652 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
653 "transport_state %x, t_state %x, se_cmd_flags %x\n",
654 cmd, kref_read(&cmd->se_cmd.cmd_kref),
655 cmd->se_cmd.transport_state,
656 cmd->se_cmd.t_state,
657 cmd->se_cmd.se_cmd_flags);
658 return 0;
659 }
660
661 cmd->trc_flags |= TRC_XMIT_DATA;
662 cmd->bufflen = se_cmd->data_length;
663 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
664
665 cmd->sg_cnt = se_cmd->t_data_nents;
666 cmd->sg = se_cmd->t_data_sg;
667 cmd->offset = 0;
668
669 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
670 cmd->prot_sg = se_cmd->t_prot_sg;
671 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
672 se_cmd->pi_err = 0;
673
674 /*
675 * Now queue completed DATA_IN the qla2xxx LLD and response ring
676 */
677 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
678 se_cmd->scsi_status);
679 }
680
681 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
682 {
683 struct qla_tgt_cmd *cmd = container_of(se_cmd,
684 struct qla_tgt_cmd, se_cmd);
685 int xmit_type = QLA_TGT_XMIT_STATUS;
686
687 if (cmd->aborted) {
688 /*
689 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
690 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
691 * already kick start the free.
692 */
693 pr_debug(
694 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
695 cmd, kref_read(&cmd->se_cmd.cmd_kref),
696 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
697 cmd->se_cmd.se_cmd_flags);
698 return 0;
699 }
700 cmd->bufflen = se_cmd->data_length;
701 cmd->sg = NULL;
702 cmd->sg_cnt = 0;
703 cmd->offset = 0;
704 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
705 cmd->trc_flags |= TRC_XMIT_STATUS;
706
707 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
708 /*
709 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
710 * for qla_tgt_xmit_response LLD code
711 */
712 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
713 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
714 se_cmd->residual_count = 0;
715 }
716 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
717 se_cmd->residual_count += se_cmd->data_length;
718
719 cmd->bufflen = 0;
720 }
721 /*
722 * Now queue status response to qla2xxx LLD code and response ring
723 */
724 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
725 }
726
727 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
728 {
729 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
730 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
731 struct qla_tgt_mgmt_cmd, se_cmd);
732
733 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
734 mcmd, se_tmr->function, se_tmr->response);
735 /*
736 * Do translation between TCM TM response codes and
737 * QLA2xxx FC TM response codes.
738 */
739 switch (se_tmr->response) {
740 case TMR_FUNCTION_COMPLETE:
741 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
742 break;
743 case TMR_TASK_DOES_NOT_EXIST:
744 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
745 break;
746 case TMR_FUNCTION_REJECTED:
747 mcmd->fc_tm_rsp = FC_TM_REJECT;
748 break;
749 case TMR_LUN_DOES_NOT_EXIST:
750 default:
751 mcmd->fc_tm_rsp = FC_TM_FAILED;
752 break;
753 }
754 /*
755 * Queue the TM response to QLA2xxx LLD to build a
756 * CTIO response packet.
757 */
758 qlt_xmit_tm_rsp(mcmd);
759 }
760
761 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
762 {
763 struct qla_tgt_cmd *cmd;
764 unsigned long flags;
765
766 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
767 return;
768
769 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
770
771 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);
772 list_del_init(&cmd->sess_cmd_list);
773 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);
774
775 qlt_abort_cmd(cmd);
776 }
777
778 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
779 struct tcm_qla2xxx_nacl *, struct fc_port *);
780 /*
781 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
782 */
783 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
784 {
785 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
786 struct se_portal_group *se_tpg = se_nacl->se_tpg;
787 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
788 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
789 struct tcm_qla2xxx_lport, lport_wwn);
790 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
791 struct tcm_qla2xxx_nacl, se_node_acl);
792 void *node;
793
794 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
795
796 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
797 if (WARN_ON(node && (node != se_nacl))) {
798 /*
799 * The nacl no longer matches what we think it should be.
800 * Most likely a new dynamic acl has been added while
801 * someone dropped the hardware lock. It clearly is a
802 * bug elsewhere, but this bit can't make things worse.
803 */
804 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
805 node, GFP_ATOMIC);
806 }
807
808 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
809 se_nacl, nacl->nport_wwnn, nacl->nport_id);
810 /*
811 * Now clear the se_nacl and session pointers from our HW lport lookup
812 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
813 *
814 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
815 * target_wait_for_sess_cmds() before the session waits for outstanding
816 * I/O to complete, to avoid a race between session shutdown execution
817 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
818 */
819 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
820 }
821
822 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
823 {
824 target_stop_session(sess->se_sess);
825 }
826
827 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
828 const char *name)
829 {
830 struct tcm_qla2xxx_nacl *nacl =
831 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
832 u64 wwnn;
833
834 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
835 return -EINVAL;
836
837 nacl->nport_wwnn = wwnn;
838 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
839
840 return 0;
841 }
842
843 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
844
845 #define DEF_QLA_TPG_ATTRIB(name) \
846 \
847 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
848 struct config_item *item, char *page) \
849 { \
850 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
851 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
852 struct tcm_qla2xxx_tpg, se_tpg); \
853 \
854 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \
855 } \
856 \
857 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
858 struct config_item *item, const char *page, size_t count) \
859 { \
860 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
861 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
862 struct tcm_qla2xxx_tpg, se_tpg); \
863 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
864 unsigned long val; \
865 int ret; \
866 \
867 ret = kstrtoul(page, 0, &val); \
868 if (ret < 0) { \
869 pr_err("kstrtoul() failed with" \
870 " ret: %d\n", ret); \
871 return -EINVAL; \
872 } \
873 \
874 if ((val != 0) && (val != 1)) { \
875 pr_err("Illegal boolean value %lu\n", val); \
876 return -EINVAL; \
877 } \
878 \
879 a->name = val; \
880 \
881 return count; \
882 } \
883 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
884
885 DEF_QLA_TPG_ATTRIB(generate_node_acls);
886 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
887 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
888 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
889 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
890 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
891 DEF_QLA_TPG_ATTRIB(jam_host);
892 #endif
893
894 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
895 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
896 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
897 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
898 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
899 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
900 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
901 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
902 #endif
903 NULL,
904 };
905
906 /* End items for tcm_qla2xxx_tpg_attrib_cit */
907
908 static int tcm_qla2xxx_enable_tpg(struct se_portal_group *se_tpg,
909 bool enable)
910 {
911 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
912 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
913 struct tcm_qla2xxx_lport, lport_wwn);
914 struct scsi_qla_host *vha = lport->qla_vha;
915 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
916 struct tcm_qla2xxx_tpg, se_tpg);
917
918 if (enable) {
919 if (atomic_read(&tpg->lport_tpg_enabled))
920 return -EEXIST;
921
922 atomic_set(&tpg->lport_tpg_enabled, 1);
923 qlt_enable_vha(vha);
924 } else {
925 if (!atomic_read(&tpg->lport_tpg_enabled))
926 return 0;
927
928 atomic_set(&tpg->lport_tpg_enabled, 0);
929 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
930 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
931 }
932
933 return 0;
934 }
935
936 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
937 char *page)
938 {
939 return target_show_dynamic_sessions(to_tpg(item), page);
940 }
941
942 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
943 const char *page, size_t count)
944 {
945 struct se_portal_group *se_tpg = to_tpg(item);
946 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
947 struct tcm_qla2xxx_tpg, se_tpg);
948 unsigned long val;
949 int ret = kstrtoul(page, 0, &val);
950
951 if (ret) {
952 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
953 return ret;
954 }
955 if (val != 0 && val != 1 && val != 3) {
956 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
957 return -EINVAL;
958 }
959 tpg->tpg_attrib.fabric_prot_type = val;
960
961 return count;
962 }
963
964 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
965 char *page)
966 {
967 struct se_portal_group *se_tpg = to_tpg(item);
968 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
969 struct tcm_qla2xxx_tpg, se_tpg);
970
971 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
972 }
973
974 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
975 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
976
977 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
978 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
979 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
980 NULL,
981 };
982
983 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
984 const char *name)
985 {
986 struct tcm_qla2xxx_lport *lport = container_of(wwn,
987 struct tcm_qla2xxx_lport, lport_wwn);
988 struct tcm_qla2xxx_tpg *tpg;
989 unsigned long tpgt;
990 int ret;
991
992 if (strstr(name, "tpgt_") != name)
993 return ERR_PTR(-EINVAL);
994 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
995 return ERR_PTR(-EINVAL);
996
997 if ((tpgt != 1)) {
998 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
999 return ERR_PTR(-ENOSYS);
1000 }
1001
1002 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1003 if (!tpg) {
1004 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1005 return ERR_PTR(-ENOMEM);
1006 }
1007 tpg->lport = lport;
1008 tpg->lport_tpgt = tpgt;
1009 /*
1010 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1011 * NodeACLs
1012 */
1013 tpg->tpg_attrib.generate_node_acls = 1;
1014 tpg->tpg_attrib.demo_mode_write_protect = 1;
1015 tpg->tpg_attrib.cache_dynamic_acls = 1;
1016 tpg->tpg_attrib.demo_mode_login_only = 1;
1017 tpg->tpg_attrib.jam_host = 0;
1018
1019 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1020 if (ret < 0) {
1021 kfree(tpg);
1022 return NULL;
1023 }
1024
1025 lport->tpg_1 = tpg;
1026
1027 return &tpg->se_tpg;
1028 }
1029
1030 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1031 {
1032 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1033 struct tcm_qla2xxx_tpg, se_tpg);
1034 struct tcm_qla2xxx_lport *lport = tpg->lport;
1035 struct scsi_qla_host *vha = lport->qla_vha;
1036 /*
1037 * Call into qla2x_target.c LLD logic to shutdown the active
1038 * FC Nexuses and disable target mode operation for this qla_hw_data
1039 */
1040 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1041 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1042
1043 core_tpg_deregister(se_tpg);
1044 /*
1045 * Clear local TPG=1 pointer for non NPIV mode.
1046 */
1047 lport->tpg_1 = NULL;
1048 kfree(tpg);
1049 }
1050
1051 static int tcm_qla2xxx_npiv_enable_tpg(struct se_portal_group *se_tpg,
1052 bool enable)
1053 {
1054 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1055 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1056 struct tcm_qla2xxx_lport, lport_wwn);
1057 struct scsi_qla_host *vha = lport->qla_vha;
1058 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1059 struct tcm_qla2xxx_tpg, se_tpg);
1060
1061 if (enable) {
1062 if (atomic_read(&tpg->lport_tpg_enabled))
1063 return -EEXIST;
1064
1065 atomic_set(&tpg->lport_tpg_enabled, 1);
1066 qlt_enable_vha(vha);
1067 } else {
1068 if (!atomic_read(&tpg->lport_tpg_enabled))
1069 return 0;
1070
1071 atomic_set(&tpg->lport_tpg_enabled, 0);
1072 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1073 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1074 }
1075
1076 return 0;
1077 }
1078
1079 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
1080 const char *name)
1081 {
1082 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1083 struct tcm_qla2xxx_lport, lport_wwn);
1084 struct tcm_qla2xxx_tpg *tpg;
1085 unsigned long tpgt;
1086 int ret;
1087
1088 if (strstr(name, "tpgt_") != name)
1089 return ERR_PTR(-EINVAL);
1090 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1091 return ERR_PTR(-EINVAL);
1092
1093 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1094 if (!tpg) {
1095 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1096 return ERR_PTR(-ENOMEM);
1097 }
1098 tpg->lport = lport;
1099 tpg->lport_tpgt = tpgt;
1100
1101 /*
1102 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1103 * NodeACLs
1104 */
1105 tpg->tpg_attrib.generate_node_acls = 1;
1106 tpg->tpg_attrib.demo_mode_write_protect = 1;
1107 tpg->tpg_attrib.cache_dynamic_acls = 1;
1108 tpg->tpg_attrib.demo_mode_login_only = 1;
1109
1110 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1111 if (ret < 0) {
1112 kfree(tpg);
1113 return NULL;
1114 }
1115 lport->tpg_1 = tpg;
1116 return &tpg->se_tpg;
1117 }
1118
1119 /*
1120 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1121 */
1122 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
1123 const be_id_t s_id)
1124 {
1125 struct tcm_qla2xxx_lport *lport;
1126 struct se_node_acl *se_nacl;
1127 struct tcm_qla2xxx_nacl *nacl;
1128 u32 key;
1129
1130 lport = vha->vha_tgt.target_lport_ptr;
1131 if (!lport) {
1132 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1133 dump_stack();
1134 return NULL;
1135 }
1136
1137 key = sid_to_key(s_id);
1138 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1139
1140 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1141 if (!se_nacl) {
1142 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1143 return NULL;
1144 }
1145 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1146 se_nacl, se_nacl->initiatorname);
1147
1148 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1149 if (!nacl->fc_port) {
1150 pr_err("Unable to locate struct fc_port\n");
1151 return NULL;
1152 }
1153
1154 return nacl->fc_port;
1155 }
1156
1157 /*
1158 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1159 */
1160 static void tcm_qla2xxx_set_sess_by_s_id(
1161 struct tcm_qla2xxx_lport *lport,
1162 struct se_node_acl *new_se_nacl,
1163 struct tcm_qla2xxx_nacl *nacl,
1164 struct se_session *se_sess,
1165 struct fc_port *fc_port,
1166 be_id_t s_id)
1167 {
1168 u32 key;
1169 void *slot;
1170 int rc;
1171
1172 key = sid_to_key(s_id);
1173 pr_debug("set_sess_by_s_id: %06x\n", key);
1174
1175 slot = btree_lookup32(&lport->lport_fcport_map, key);
1176 if (!slot) {
1177 if (new_se_nacl) {
1178 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1179 nacl->nport_id = key;
1180 rc = btree_insert32(&lport->lport_fcport_map, key,
1181 new_se_nacl, GFP_ATOMIC);
1182 if (rc)
1183 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1184 (int)key);
1185 } else {
1186 pr_debug("Wiping nonexisting fc_port entry\n");
1187 }
1188
1189 fc_port->se_sess = se_sess;
1190 nacl->fc_port = fc_port;
1191 return;
1192 }
1193
1194 if (nacl->fc_port) {
1195 if (new_se_nacl == NULL) {
1196 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1197 btree_remove32(&lport->lport_fcport_map, key);
1198 nacl->fc_port = NULL;
1199 return;
1200 }
1201 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1202 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1203 fc_port->se_sess = se_sess;
1204 nacl->fc_port = fc_port;
1205 return;
1206 }
1207
1208 if (new_se_nacl == NULL) {
1209 pr_debug("Clearing existing fc_port entry\n");
1210 btree_remove32(&lport->lport_fcport_map, key);
1211 return;
1212 }
1213
1214 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1215 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1216 fc_port->se_sess = se_sess;
1217 nacl->fc_port = fc_port;
1218
1219 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1220 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1221 }
1222
1223 /*
1224 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1225 */
1226 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1227 scsi_qla_host_t *vha,
1228 const uint16_t loop_id)
1229 {
1230 struct tcm_qla2xxx_lport *lport;
1231 struct se_node_acl *se_nacl;
1232 struct tcm_qla2xxx_nacl *nacl;
1233 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1234
1235 lport = vha->vha_tgt.target_lport_ptr;
1236 if (!lport) {
1237 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1238 dump_stack();
1239 return NULL;
1240 }
1241
1242 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1243
1244 fc_loopid = lport->lport_loopid_map + loop_id;
1245 se_nacl = fc_loopid->se_nacl;
1246 if (!se_nacl) {
1247 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1248 loop_id);
1249 return NULL;
1250 }
1251
1252 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1253
1254 if (!nacl->fc_port) {
1255 pr_err("Unable to locate struct fc_port\n");
1256 return NULL;
1257 }
1258
1259 return nacl->fc_port;
1260 }
1261
1262 /*
1263 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1264 */
1265 static void tcm_qla2xxx_set_sess_by_loop_id(
1266 struct tcm_qla2xxx_lport *lport,
1267 struct se_node_acl *new_se_nacl,
1268 struct tcm_qla2xxx_nacl *nacl,
1269 struct se_session *se_sess,
1270 struct fc_port *fc_port,
1271 uint16_t loop_id)
1272 {
1273 struct se_node_acl *saved_nacl;
1274 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1275
1276 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1277
1278 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1279 lport->lport_loopid_map)[loop_id];
1280
1281 saved_nacl = fc_loopid->se_nacl;
1282 if (!saved_nacl) {
1283 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1284 fc_loopid->se_nacl = new_se_nacl;
1285 if (fc_port->se_sess != se_sess)
1286 fc_port->se_sess = se_sess;
1287 if (nacl->fc_port != fc_port)
1288 nacl->fc_port = fc_port;
1289 return;
1290 }
1291
1292 if (nacl->fc_port) {
1293 if (new_se_nacl == NULL) {
1294 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1295 fc_loopid->se_nacl = NULL;
1296 nacl->fc_port = NULL;
1297 return;
1298 }
1299
1300 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1301 fc_loopid->se_nacl = new_se_nacl;
1302 if (fc_port->se_sess != se_sess)
1303 fc_port->se_sess = se_sess;
1304 if (nacl->fc_port != fc_port)
1305 nacl->fc_port = fc_port;
1306 return;
1307 }
1308
1309 if (new_se_nacl == NULL) {
1310 pr_debug("Clearing fc_loopid->se_nacl\n");
1311 fc_loopid->se_nacl = NULL;
1312 return;
1313 }
1314
1315 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1316 fc_loopid->se_nacl = new_se_nacl;
1317 if (fc_port->se_sess != se_sess)
1318 fc_port->se_sess = se_sess;
1319 if (nacl->fc_port != fc_port)
1320 nacl->fc_port = fc_port;
1321
1322 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1323 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1324 }
1325
1326 /*
1327 * Should always be called with qla_hw_data->tgt.sess_lock held.
1328 */
1329 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1330 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1331 {
1332 struct se_session *se_sess = sess->se_sess;
1333
1334 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1335 sess, port_id_to_be_id(sess->d_id));
1336 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1337 sess, sess->loop_id);
1338 }
1339
1340 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1341 {
1342 struct qla_tgt *tgt = sess->tgt;
1343 struct qla_hw_data *ha = tgt->ha;
1344 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1345 struct se_session *se_sess;
1346 struct tcm_qla2xxx_lport *lport;
1347
1348 se_sess = sess->se_sess;
1349 if (!se_sess) {
1350 pr_err("struct fc_port->se_sess is NULL\n");
1351 dump_stack();
1352 return;
1353 }
1354
1355 lport = vha->vha_tgt.target_lport_ptr;
1356 if (!lport) {
1357 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1358 dump_stack();
1359 return;
1360 }
1361 target_wait_for_sess_cmds(se_sess);
1362
1363 target_remove_session(se_sess);
1364 }
1365
1366 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1367 struct se_session *se_sess, void *p)
1368 {
1369 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1370 struct tcm_qla2xxx_tpg, se_tpg);
1371 struct tcm_qla2xxx_lport *lport = tpg->lport;
1372 struct qla_hw_data *ha = lport->qla_vha->hw;
1373 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1374 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1375 struct tcm_qla2xxx_nacl, se_node_acl);
1376 struct fc_port *qlat_sess = p;
1377 uint16_t loop_id = qlat_sess->loop_id;
1378 unsigned long flags;
1379
1380 /*
1381 * And now setup se_nacl and session pointers into HW lport internal
1382 * mappings for fabric S_ID and LOOP_ID.
1383 */
1384 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1385 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
1386 port_id_to_be_id(qlat_sess->d_id));
1387 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1388 se_sess, qlat_sess, loop_id);
1389 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1390
1391 return 0;
1392 }
1393
1394 /*
1395 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1396 * to locate struct se_node_acl
1397 */
1398 static int tcm_qla2xxx_check_initiator_node_acl(
1399 scsi_qla_host_t *vha,
1400 unsigned char *fc_wwpn,
1401 struct fc_port *qlat_sess)
1402 {
1403 struct qla_hw_data *ha = vha->hw;
1404 struct tcm_qla2xxx_lport *lport;
1405 struct tcm_qla2xxx_tpg *tpg;
1406 struct se_session *se_sess;
1407 unsigned char port_name[36];
1408 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1409 TCM_QLA2XXX_DEFAULT_TAGS;
1410
1411 lport = vha->vha_tgt.target_lport_ptr;
1412 if (!lport) {
1413 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1414 dump_stack();
1415 return -EINVAL;
1416 }
1417 /*
1418 * Locate the TPG=1 reference..
1419 */
1420 tpg = lport->tpg_1;
1421 if (!tpg) {
1422 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
1423 return -EINVAL;
1424 }
1425 /*
1426 * Format the FCP Initiator port_name into colon seperated values to
1427 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1428 */
1429 memset(&port_name, 0, 36);
1430 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1431 /*
1432 * Locate our struct se_node_acl either from an explict NodeACL created
1433 * via ConfigFS, or via running in TPG demo mode.
1434 */
1435 se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1436 sizeof(struct qla_tgt_cmd),
1437 TARGET_PROT_ALL, port_name,
1438 qlat_sess, tcm_qla2xxx_session_cb);
1439 if (IS_ERR(se_sess))
1440 return PTR_ERR(se_sess);
1441
1442 return 0;
1443 }
1444
1445 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1446 uint16_t loop_id, bool conf_compl_supported)
1447 {
1448 struct qla_tgt *tgt = sess->tgt;
1449 struct qla_hw_data *ha = tgt->ha;
1450 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1451 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1452 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1453 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1454 struct tcm_qla2xxx_nacl, se_node_acl);
1455 u32 key;
1456
1457
1458 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1459 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1460 sess, sess->port_name,
1461 sess->loop_id, loop_id, sess->d_id.b.domain,
1462 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1463 s_id.b.area, s_id.b.al_pa);
1464
1465 if (sess->loop_id != loop_id) {
1466 /*
1467 * Because we can shuffle loop IDs around and we
1468 * update different sessions non-atomically, we might
1469 * have overwritten this session's old loop ID
1470 * already, and we might end up overwriting some other
1471 * session that will be updated later. So we have to
1472 * be extra careful and we can't warn about those things...
1473 */
1474 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1475 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1476
1477 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1478
1479 sess->loop_id = loop_id;
1480 }
1481
1482 if (sess->d_id.b24 != s_id.b24) {
1483 key = (((u32) sess->d_id.b.domain << 16) |
1484 ((u32) sess->d_id.b.area << 8) |
1485 ((u32) sess->d_id.b.al_pa));
1486
1487 if (btree_lookup32(&lport->lport_fcport_map, key))
1488 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1489 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1490 sess->d_id.b.domain, sess->d_id.b.area,
1491 sess->d_id.b.al_pa);
1492 else
1493 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1494 sess->d_id.b.domain, sess->d_id.b.area,
1495 sess->d_id.b.al_pa);
1496
1497 key = (((u32) s_id.b.domain << 16) |
1498 ((u32) s_id.b.area << 8) |
1499 ((u32) s_id.b.al_pa));
1500
1501 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1502 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1503 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1504 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1505 } else {
1506 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1507 GFP_ATOMIC);
1508 }
1509
1510 sess->d_id = s_id;
1511 nacl->nport_id = key;
1512 }
1513
1514 sess->conf_compl_supported = conf_compl_supported;
1515
1516 }
1517
1518 /*
1519 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1520 */
1521 static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1522 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
1523 .handle_cmd = tcm_qla2xxx_handle_cmd,
1524 .handle_data = tcm_qla2xxx_handle_data,
1525 .handle_tmr = tcm_qla2xxx_handle_tmr,
1526 .get_cmd = tcm_qla2xxx_get_cmd,
1527 .rel_cmd = tcm_qla2xxx_rel_cmd,
1528 .free_cmd = tcm_qla2xxx_free_cmd,
1529 .free_mcmd = tcm_qla2xxx_free_mcmd,
1530 .free_session = tcm_qla2xxx_free_session,
1531 .update_sess = tcm_qla2xxx_update_sess,
1532 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1533 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1534 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1535 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1536 .put_sess = tcm_qla2xxx_put_sess,
1537 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1538 .get_dif_tags = tcm_qla2xxx_dif_tags,
1539 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1540 };
1541
1542 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1543 {
1544 int rc;
1545 size_t map_sz;
1546
1547 rc = btree_init32(&lport->lport_fcport_map);
1548 if (rc) {
1549 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1550 return rc;
1551 }
1552
1553 map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid));
1554
1555 lport->lport_loopid_map = vzalloc(map_sz);
1556 if (!lport->lport_loopid_map) {
1557 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz);
1558 btree_destroy32(&lport->lport_fcport_map);
1559 return -ENOMEM;
1560 }
1561 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz);
1562 return 0;
1563 }
1564
1565 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1566 void *target_lport_ptr,
1567 u64 npiv_wwpn, u64 npiv_wwnn)
1568 {
1569 struct qla_hw_data *ha = vha->hw;
1570 struct tcm_qla2xxx_lport *lport =
1571 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1572 /*
1573 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1574 */
1575 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1576 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1577 lport->qla_vha = vha;
1578
1579 return 0;
1580 }
1581
1582 static struct se_wwn *tcm_qla2xxx_make_lport(
1583 struct target_fabric_configfs *tf,
1584 struct config_group *group,
1585 const char *name)
1586 {
1587 struct tcm_qla2xxx_lport *lport;
1588 u64 wwpn;
1589 int ret = -ENODEV;
1590
1591 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1592 return ERR_PTR(-EINVAL);
1593
1594 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1595 if (!lport) {
1596 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1597 return ERR_PTR(-ENOMEM);
1598 }
1599 lport->lport_wwpn = wwpn;
1600 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1601 wwpn);
1602 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1603
1604 ret = tcm_qla2xxx_init_lport(lport);
1605 if (ret != 0)
1606 goto out;
1607
1608 ret = qlt_lport_register(lport, wwpn, 0, 0,
1609 tcm_qla2xxx_lport_register_cb);
1610 if (ret != 0)
1611 goto out_lport;
1612
1613 return &lport->lport_wwn;
1614 out_lport:
1615 vfree(lport->lport_loopid_map);
1616 btree_destroy32(&lport->lport_fcport_map);
1617 out:
1618 kfree(lport);
1619 return ERR_PTR(ret);
1620 }
1621
1622 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1623 {
1624 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1625 struct tcm_qla2xxx_lport, lport_wwn);
1626 struct scsi_qla_host *vha = lport->qla_vha;
1627 struct se_node_acl *node;
1628 u32 key = 0;
1629
1630 /*
1631 * Call into qla2x_target.c LLD logic to complete the
1632 * shutdown of struct qla_tgt after the call to
1633 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1634 */
1635 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1636 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1637
1638 qlt_lport_deregister(vha);
1639
1640 vfree(lport->lport_loopid_map);
1641 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1642 btree_remove32(&lport->lport_fcport_map, key);
1643 btree_destroy32(&lport->lport_fcport_map);
1644 kfree(lport);
1645 }
1646
1647 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1648 void *target_lport_ptr,
1649 u64 npiv_wwpn, u64 npiv_wwnn)
1650 {
1651 struct fc_vport *vport;
1652 struct Scsi_Host *sh = base_vha->host;
1653 struct scsi_qla_host *npiv_vha;
1654 struct tcm_qla2xxx_lport *lport =
1655 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1656 struct tcm_qla2xxx_lport *base_lport =
1657 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1658 struct fc_vport_identifiers vport_id;
1659
1660 if (qla_ini_mode_enabled(base_vha)) {
1661 pr_err("qla2xxx base_vha not enabled for target mode\n");
1662 return -EPERM;
1663 }
1664
1665 if (!base_lport || !base_lport->tpg_1 ||
1666 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1667 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1668 return -EPERM;
1669 }
1670
1671 memset(&vport_id, 0, sizeof(vport_id));
1672 vport_id.port_name = npiv_wwpn;
1673 vport_id.node_name = npiv_wwnn;
1674 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1675 vport_id.vport_type = FC_PORTTYPE_NPIV;
1676 vport_id.disable = false;
1677
1678 vport = fc_vport_create(sh, 0, &vport_id);
1679 if (!vport) {
1680 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1681 return -ENODEV;
1682 }
1683 /*
1684 * Setup local pointer to NPIV vhba + target_lport_ptr
1685 */
1686 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1687 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1688 lport->qla_vha = npiv_vha;
1689 scsi_host_get(npiv_vha->host);
1690 return 0;
1691 }
1692
1693
1694 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1695 struct target_fabric_configfs *tf,
1696 struct config_group *group,
1697 const char *name)
1698 {
1699 struct tcm_qla2xxx_lport *lport;
1700 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1701 char *p, tmp[128];
1702 int ret;
1703
1704 snprintf(tmp, 128, "%s", name);
1705
1706 p = strchr(tmp, '@');
1707 if (!p) {
1708 pr_err("Unable to locate NPIV '@' separator\n");
1709 return ERR_PTR(-EINVAL);
1710 }
1711 *p++ = '\0';
1712
1713 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1714 return ERR_PTR(-EINVAL);
1715
1716 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1717 &npiv_wwpn, &npiv_wwnn) < 0)
1718 return ERR_PTR(-EINVAL);
1719
1720 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1721 if (!lport) {
1722 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1723 return ERR_PTR(-ENOMEM);
1724 }
1725 lport->lport_npiv_wwpn = npiv_wwpn;
1726 lport->lport_npiv_wwnn = npiv_wwnn;
1727 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1728
1729 ret = tcm_qla2xxx_init_lport(lport);
1730 if (ret != 0)
1731 goto out;
1732
1733 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1734 tcm_qla2xxx_lport_register_npiv_cb);
1735 if (ret != 0)
1736 goto out_lport;
1737
1738 return &lport->lport_wwn;
1739 out_lport:
1740 vfree(lport->lport_loopid_map);
1741 btree_destroy32(&lport->lport_fcport_map);
1742 out:
1743 kfree(lport);
1744 return ERR_PTR(ret);
1745 }
1746
1747 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1748 {
1749 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1750 struct tcm_qla2xxx_lport, lport_wwn);
1751 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1752 struct qla_hw_data *ha = npiv_vha->hw;
1753 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1754
1755 scsi_host_put(npiv_vha->host);
1756 /*
1757 * Notify libfc that we want to release the vha->fc_vport
1758 */
1759 fc_vport_terminate(npiv_vha->fc_vport);
1760 scsi_host_put(base_vha->host);
1761 kfree(lport);
1762 }
1763
1764
1765 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1766 char *page)
1767 {
1768 return sprintf(page,
1769 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1770 QLA2XXX_VERSION, utsname()->sysname,
1771 utsname()->machine, utsname()->release);
1772 }
1773
1774 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1775
1776 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1777 &tcm_qla2xxx_wwn_attr_version,
1778 NULL,
1779 };
1780
1781 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1782 .module = THIS_MODULE,
1783 .fabric_name = "qla2xxx",
1784 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1785 /*
1786 * XXX: Limit assumes single page per scatter-gather-list entry.
1787 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1788 */
1789 .max_data_sg_nents = 1200,
1790 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1791 .tpg_get_tag = tcm_qla2xxx_get_tag,
1792 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1793 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1794 .tpg_check_demo_mode_write_protect =
1795 tcm_qla2xxx_check_demo_write_protect,
1796 .tpg_check_prod_mode_write_protect =
1797 tcm_qla2xxx_check_prod_write_protect,
1798 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1799 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1800 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1801 .check_stop_free = tcm_qla2xxx_check_stop_free,
1802 .release_cmd = tcm_qla2xxx_release_cmd,
1803 .close_session = tcm_qla2xxx_close_session,
1804 .sess_get_initiator_sid = NULL,
1805 .write_pending = tcm_qla2xxx_write_pending,
1806 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1807 .queue_data_in = tcm_qla2xxx_queue_data_in,
1808 .queue_status = tcm_qla2xxx_queue_status,
1809 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1810 .aborted_task = tcm_qla2xxx_aborted_task,
1811 /*
1812 * Setup function pointers for generic logic in
1813 * target_core_fabric_configfs.c
1814 */
1815 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1816 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1817 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1818 .fabric_enable_tpg = tcm_qla2xxx_enable_tpg,
1819 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1820 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1821
1822 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1823 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1824 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1825
1826 .default_submit_type = TARGET_DIRECT_SUBMIT,
1827 .direct_submit_supp = 1,
1828 };
1829
1830 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1831 .module = THIS_MODULE,
1832 .fabric_name = "qla2xxx_npiv",
1833 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1834 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1835 .tpg_get_tag = tcm_qla2xxx_get_tag,
1836 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1837 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1838 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1839 .tpg_check_prod_mode_write_protect =
1840 tcm_qla2xxx_check_prod_write_protect,
1841 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1842 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1843 .check_stop_free = tcm_qla2xxx_check_stop_free,
1844 .release_cmd = tcm_qla2xxx_release_cmd,
1845 .close_session = tcm_qla2xxx_close_session,
1846 .sess_get_initiator_sid = NULL,
1847 .write_pending = tcm_qla2xxx_write_pending,
1848 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1849 .queue_data_in = tcm_qla2xxx_queue_data_in,
1850 .queue_status = tcm_qla2xxx_queue_status,
1851 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1852 .aborted_task = tcm_qla2xxx_aborted_task,
1853 /*
1854 * Setup function pointers for generic logic in
1855 * target_core_fabric_configfs.c
1856 */
1857 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1858 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1859 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1860 .fabric_enable_tpg = tcm_qla2xxx_npiv_enable_tpg,
1861 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1862 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1863
1864 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1865
1866 .default_submit_type = TARGET_DIRECT_SUBMIT,
1867 .direct_submit_supp = 1,
1868 };
1869
1870 static int tcm_qla2xxx_register_configfs(void)
1871 {
1872 int ret;
1873
1874 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1875 QLA2XXX_VERSION, utsname()->sysname,
1876 utsname()->machine, utsname()->release);
1877
1878 ret = target_register_template(&tcm_qla2xxx_ops);
1879 if (ret)
1880 return ret;
1881
1882 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1883 if (ret)
1884 goto out_fabric;
1885
1886 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1887 WQ_MEM_RECLAIM, 0);
1888 if (!tcm_qla2xxx_free_wq) {
1889 ret = -ENOMEM;
1890 goto out_fabric_npiv;
1891 }
1892
1893 return 0;
1894
1895 out_fabric_npiv:
1896 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1897 out_fabric:
1898 target_unregister_template(&tcm_qla2xxx_ops);
1899 return ret;
1900 }
1901
1902 static void tcm_qla2xxx_deregister_configfs(void)
1903 {
1904 destroy_workqueue(tcm_qla2xxx_free_wq);
1905
1906 target_unregister_template(&tcm_qla2xxx_ops);
1907 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1908 }
1909
1910 static int __init tcm_qla2xxx_init(void)
1911 {
1912 int ret;
1913
1914 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64);
1915 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64);
1916 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32);
1917 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64);
1918 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12);
1919 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4);
1920 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64);
1921 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
1922 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64);
1923 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64);
1924 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
1925 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24);
1926 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24);
1927 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64);
1928
1929 ret = tcm_qla2xxx_register_configfs();
1930 if (ret < 0)
1931 return ret;
1932
1933 return 0;
1934 }
1935
1936 static void __exit tcm_qla2xxx_exit(void)
1937 {
1938 tcm_qla2xxx_deregister_configfs();
1939 }
1940
1941 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1942 MODULE_LICENSE("GPL");
1943 module_init(tcm_qla2xxx_init);
1944 module_exit(tcm_qla2xxx_exit);
Kernel DRM miscellaneous fixes and cross-tree changes