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ocfs2: fix several issues of append dio
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob7ed7bae6172b21ab43453ebfc3af7f2d72aec200
1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
4 *
5 * (c) Copyright 2010-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
8 *
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
11 *
12 * Copyright (c) 2010 Cisco Systems, Inc
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
24
25
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <generated/utsrelease.h>
29 #include <linux/utsname.h>
30 #include <linux/vmalloc.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/kthread.h>
35 #include <linux/types.h>
36 #include <linux/string.h>
37 #include <linux/configfs.h>
38 #include <linux/ctype.h>
39 #include <asm/unaligned.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <target/target_core_base.h>
45 #include <target/target_core_fabric.h>
46 #include <target/target_core_fabric_configfs.h>
47 #include <target/configfs_macros.h>
48
49 #include "qla_def.h"
50 #include "qla_target.h"
51 #include "tcm_qla2xxx.h"
52
53 static struct workqueue_struct *tcm_qla2xxx_free_wq;
54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
55
56 /*
57 * Parse WWN.
58 * If strict, we require lower-case hex and colon separators to be sure
59 * the name is the same as what would be generated by ft_format_wwn()
60 * so the name and wwn are mapped one-to-one.
61 */
62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
63 {
64 const char *cp;
65 char c;
66 u32 nibble;
67 u32 byte = 0;
68 u32 pos = 0;
69 u32 err;
70
71 *wwn = 0;
72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
73 c = *cp;
74 if (c == '\n' && cp[1] == '\0')
75 continue;
76 if (strict && pos++ == 2 && byte++ < 7) {
77 pos = 0;
78 if (c == ':')
79 continue;
80 err = 1;
81 goto fail;
82 }
83 if (c == '\0') {
84 err = 2;
85 if (strict && byte != 8)
86 goto fail;
87 return cp - name;
88 }
89 err = 3;
90 if (isdigit(c))
91 nibble = c - '0';
92 else if (isxdigit(c) && (islower(c) || !strict))
93 nibble = tolower(c) - 'a' + 10;
94 else
95 goto fail;
96 *wwn = (*wwn << 4) | nibble;
97 }
98 err = 4;
99 fail:
100 pr_debug("err %u len %zu pos %u byte %u\n",
101 err, cp - name, pos, byte);
102 return -1;
103 }
104
105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
106 {
107 u8 b[8];
108
109 put_unaligned_be64(wwn, b);
110 return snprintf(buf, len,
111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
113 }
114
115 static char *tcm_qla2xxx_get_fabric_name(void)
116 {
117 return "qla2xxx";
118 }
119
120 /*
121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
122 */
123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
124 {
125 unsigned int i, j;
126 u8 wwn[8];
127
128 memset(wwn, 0, sizeof(wwn));
129
130 /* Validate and store the new name */
131 for (i = 0, j = 0; i < 16; i++) {
132 int value;
133
134 value = hex_to_bin(*ns++);
135 if (value >= 0)
136 j = (j << 4) | value;
137 else
138 return -EINVAL;
139
140 if (i % 2) {
141 wwn[i/2] = j & 0xff;
142 j = 0;
143 }
144 }
145
146 *nm = wwn_to_u64(wwn);
147 return 0;
148 }
149
150 /*
151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
152 * store_fc_host_vport_create()
153 */
154 static int tcm_qla2xxx_npiv_parse_wwn(
155 const char *name,
156 size_t count,
157 u64 *wwpn,
158 u64 *wwnn)
159 {
160 unsigned int cnt = count;
161 int rc;
162
163 *wwpn = 0;
164 *wwnn = 0;
165
166 /* count may include a LF at end of string */
167 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
168 cnt--;
169
170 /* validate we have enough characters for WWPN */
171 if ((cnt != (16+1+16)) || (name[16] != ':'))
172 return -EINVAL;
173
174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
175 if (rc != 0)
176 return rc;
177
178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
179 if (rc != 0)
180 return rc;
181
182 return 0;
183 }
184
185 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
186 {
187 return "qla2xxx_npiv";
188 }
189
190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
191 {
192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
193 struct tcm_qla2xxx_tpg, se_tpg);
194 struct tcm_qla2xxx_lport *lport = tpg->lport;
195
196 return lport->lport_naa_name;
197 }
198
199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
200 {
201 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
202 struct tcm_qla2xxx_tpg, se_tpg);
203 return tpg->lport_tpgt;
204 }
205
206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
207 {
208 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
209 struct tcm_qla2xxx_tpg, se_tpg);
210
211 return tpg->tpg_attrib.generate_node_acls;
212 }
213
214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
215 {
216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
217 struct tcm_qla2xxx_tpg, se_tpg);
218
219 return tpg->tpg_attrib.cache_dynamic_acls;
220 }
221
222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
223 {
224 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
225 struct tcm_qla2xxx_tpg, se_tpg);
226
227 return tpg->tpg_attrib.demo_mode_write_protect;
228 }
229
230 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
231 {
232 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
233 struct tcm_qla2xxx_tpg, se_tpg);
234
235 return tpg->tpg_attrib.prod_mode_write_protect;
236 }
237
238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
239 {
240 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
241 struct tcm_qla2xxx_tpg, se_tpg);
242
243 return tpg->tpg_attrib.demo_mode_login_only;
244 }
245
246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
247 {
248 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
249 struct tcm_qla2xxx_tpg, se_tpg);
250
251 return tpg->tpg_attrib.fabric_prot_type;
252 }
253
254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
255 {
256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
257 struct tcm_qla2xxx_tpg, se_tpg);
258
259 return tpg->lport_tpgt;
260 }
261
262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
263 {
264 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
265 struct qla_tgt_mgmt_cmd, free_work);
266
267 transport_generic_free_cmd(&mcmd->se_cmd, 0);
268 }
269
270 /*
271 * Called from qla_target_template->free_mcmd(), and will call
272 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
273 * release callback. qla_hw_data->hardware_lock is expected to be held
274 */
275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
276 {
277 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
278 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
279 }
280
281 static void tcm_qla2xxx_complete_free(struct work_struct *work)
282 {
283 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
284
285 cmd->cmd_in_wq = 0;
286
287 WARN_ON(cmd->cmd_flags & BIT_16);
288
289 cmd->cmd_flags |= BIT_16;
290 transport_generic_free_cmd(&cmd->se_cmd, 0);
291 }
292
293 /*
294 * Called from qla_target_template->free_cmd(), and will call
295 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
296 * release callback. qla_hw_data->hardware_lock is expected to be held
297 */
298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
299 {
300 cmd->cmd_in_wq = 1;
301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
302 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
303 }
304
305 /*
306 * Called from struct target_core_fabric_ops->check_stop_free() context
307 */
308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
309 {
310 struct qla_tgt_cmd *cmd;
311
312 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
313 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
314 cmd->cmd_flags |= BIT_14;
315 }
316
317 return target_put_sess_cmd(se_cmd);
318 }
319
320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
321 * fabric descriptor @se_cmd command to release
322 */
323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
324 {
325 struct qla_tgt_cmd *cmd;
326
327 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
328 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
329 struct qla_tgt_mgmt_cmd, se_cmd);
330 qlt_free_mcmd(mcmd);
331 return;
332 }
333
334 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
335 qlt_free_cmd(cmd);
336 }
337
338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
339 {
340 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
341 struct scsi_qla_host *vha;
342 unsigned long flags;
343
344 BUG_ON(!sess);
345 vha = sess->vha;
346
347 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
348 target_sess_cmd_list_set_waiting(se_sess);
349 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
350
351 return 1;
352 }
353
354 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
355 {
356 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
357 struct scsi_qla_host *vha;
358 unsigned long flags;
359
360 BUG_ON(!sess);
361 vha = sess->vha;
362
363 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
364 qlt_unreg_sess(sess);
365 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
366 }
367
368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
369 {
370 return 0;
371 }
372
373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
374 {
375 struct qla_tgt_cmd *cmd = container_of(se_cmd,
376 struct qla_tgt_cmd, se_cmd);
377 cmd->cmd_flags |= BIT_3;
378 cmd->bufflen = se_cmd->data_length;
379 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
380
381 cmd->sg_cnt = se_cmd->t_data_nents;
382 cmd->sg = se_cmd->t_data_sg;
383
384 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
385 cmd->prot_sg = se_cmd->t_prot_sg;
386 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
387 se_cmd->pi_err = 0;
388
389 /*
390 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
391 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
392 */
393 return qlt_rdy_to_xfer(cmd);
394 }
395
396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
397 {
398 unsigned long flags;
399 /*
400 * Check for WRITE_PENDING status to determine if we need to wait for
401 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
402 */
403 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
404 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
405 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
406 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
407 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
408 3 * HZ);
409 return 0;
410 }
411 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
412
413 return 0;
414 }
415
416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
417 {
418 return;
419 }
420
421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
422 {
423 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
424 struct qla_tgt_cmd *cmd = container_of(se_cmd,
425 struct qla_tgt_cmd, se_cmd);
426 return cmd->state;
427 }
428
429 return 0;
430 }
431
432 /*
433 * Called from process context in qla_target.c:qlt_do_work() code
434 */
435 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
436 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
437 int data_dir, int bidi)
438 {
439 struct se_cmd *se_cmd = &cmd->se_cmd;
440 struct se_session *se_sess;
441 struct qla_tgt_sess *sess;
442 int flags = TARGET_SCF_ACK_KREF;
443
444 if (bidi)
445 flags |= TARGET_SCF_BIDI_OP;
446
447 sess = cmd->sess;
448 if (!sess) {
449 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
450 return -EINVAL;
451 }
452
453 se_sess = sess->se_sess;
454 if (!se_sess) {
455 pr_err("Unable to locate active struct se_session\n");
456 return -EINVAL;
457 }
458
459 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
460 cmd->unpacked_lun, data_length, fcp_task_attr,
461 data_dir, flags);
462 }
463
464 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
465 {
466 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
467
468 /*
469 * Ensure that the complete FCP WRITE payload has been received.
470 * Otherwise return an exception via CHECK_CONDITION status.
471 */
472 cmd->cmd_in_wq = 0;
473 cmd->cmd_flags |= BIT_11;
474 if (!cmd->write_data_transferred) {
475 /*
476 * Check if se_cmd has already been aborted via LUN_RESET, and
477 * waiting upon completion in tcm_qla2xxx_write_pending_status()
478 */
479 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
480 complete(&cmd->se_cmd.t_transport_stop_comp);
481 return;
482 }
483
484 if (cmd->se_cmd.pi_err)
485 transport_generic_request_failure(&cmd->se_cmd,
486 cmd->se_cmd.pi_err);
487 else
488 transport_generic_request_failure(&cmd->se_cmd,
489 TCM_CHECK_CONDITION_ABORT_CMD);
490
491 return;
492 }
493
494 return target_execute_cmd(&cmd->se_cmd);
495 }
496
497 /*
498 * Called from qla_target.c:qlt_do_ctio_completion()
499 */
500 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
501 {
502 cmd->cmd_flags |= BIT_10;
503 cmd->cmd_in_wq = 1;
504 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
505 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
506 }
507
508 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
509 {
510 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
511
512 /* take an extra kref to prevent cmd free too early.
513 * need to wait for SCSI status/check condition to
514 * finish responding generate by transport_generic_request_failure.
515 */
516 kref_get(&cmd->se_cmd.cmd_kref);
517 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
518 }
519
520 /*
521 * Called from qla_target.c:qlt_do_ctio_completion()
522 */
523 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
524 {
525 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
526 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
527 }
528
529 /*
530 * Called from qla_target.c:qlt_issue_task_mgmt()
531 */
532 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
533 uint8_t tmr_func, uint32_t tag)
534 {
535 struct qla_tgt_sess *sess = mcmd->sess;
536 struct se_cmd *se_cmd = &mcmd->se_cmd;
537
538 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
539 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
540 }
541
542 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
543 {
544 struct qla_tgt_cmd *cmd = container_of(se_cmd,
545 struct qla_tgt_cmd, se_cmd);
546
547 cmd->cmd_flags |= BIT_4;
548 cmd->bufflen = se_cmd->data_length;
549 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
550
551 cmd->sg_cnt = se_cmd->t_data_nents;
552 cmd->sg = se_cmd->t_data_sg;
553 cmd->offset = 0;
554
555 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
556 cmd->prot_sg = se_cmd->t_prot_sg;
557 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
558 se_cmd->pi_err = 0;
559
560 /*
561 * Now queue completed DATA_IN the qla2xxx LLD and response ring
562 */
563 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
564 se_cmd->scsi_status);
565 }
566
567 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
568 {
569 struct qla_tgt_cmd *cmd = container_of(se_cmd,
570 struct qla_tgt_cmd, se_cmd);
571 int xmit_type = QLA_TGT_XMIT_STATUS;
572
573 cmd->bufflen = se_cmd->data_length;
574 cmd->sg = NULL;
575 cmd->sg_cnt = 0;
576 cmd->offset = 0;
577 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
578 if (cmd->cmd_flags & BIT_5) {
579 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
580 dump_stack();
581 }
582 cmd->cmd_flags |= BIT_5;
583
584 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
585 /*
586 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
587 * for qla_tgt_xmit_response LLD code
588 */
589 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
590 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
591 se_cmd->residual_count = 0;
592 }
593 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
594 se_cmd->residual_count += se_cmd->data_length;
595
596 cmd->bufflen = 0;
597 }
598 /*
599 * Now queue status response to qla2xxx LLD code and response ring
600 */
601 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
602 }
603
604 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
605 {
606 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
607 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
608 struct qla_tgt_mgmt_cmd, se_cmd);
609
610 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
611 mcmd, se_tmr->function, se_tmr->response);
612 /*
613 * Do translation between TCM TM response codes and
614 * QLA2xxx FC TM response codes.
615 */
616 switch (se_tmr->response) {
617 case TMR_FUNCTION_COMPLETE:
618 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
619 break;
620 case TMR_TASK_DOES_NOT_EXIST:
621 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
622 break;
623 case TMR_FUNCTION_REJECTED:
624 mcmd->fc_tm_rsp = FC_TM_REJECT;
625 break;
626 case TMR_LUN_DOES_NOT_EXIST:
627 default:
628 mcmd->fc_tm_rsp = FC_TM_FAILED;
629 break;
630 }
631 /*
632 * Queue the TM response to QLA2xxx LLD to build a
633 * CTIO response packet.
634 */
635 qlt_xmit_tm_rsp(mcmd);
636 }
637
638 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
639 {
640 struct qla_tgt_cmd *cmd = container_of(se_cmd,
641 struct qla_tgt_cmd, se_cmd);
642 qlt_abort_cmd(cmd);
643 }
644
645 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
646 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
647 /*
648 * Expected to be called with struct qla_hw_data->hardware_lock held
649 */
650 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
651 {
652 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
653 struct se_portal_group *se_tpg = se_nacl->se_tpg;
654 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
655 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
656 struct tcm_qla2xxx_lport, lport_wwn);
657 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
658 struct tcm_qla2xxx_nacl, se_node_acl);
659 void *node;
660
661 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
662
663 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
664 if (WARN_ON(node && (node != se_nacl))) {
665 /*
666 * The nacl no longer matches what we think it should be.
667 * Most likely a new dynamic acl has been added while
668 * someone dropped the hardware lock. It clearly is a
669 * bug elsewhere, but this bit can't make things worse.
670 */
671 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
672 node, GFP_ATOMIC);
673 }
674
675 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
676 se_nacl, nacl->nport_wwnn, nacl->nport_id);
677 /*
678 * Now clear the se_nacl and session pointers from our HW lport lookup
679 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
680 *
681 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
682 * target_wait_for_sess_cmds() before the session waits for outstanding
683 * I/O to complete, to avoid a race between session shutdown execution
684 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
685 */
686 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
687 }
688
689 static void tcm_qla2xxx_release_session(struct kref *kref)
690 {
691 struct se_session *se_sess = container_of(kref,
692 struct se_session, sess_kref);
693
694 qlt_unreg_sess(se_sess->fabric_sess_ptr);
695 }
696
697 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
698 {
699 if (!sess)
700 return;
701
702 assert_spin_locked(&sess->vha->hw->hardware_lock);
703 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
704 }
705
706 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
707 {
708 assert_spin_locked(&sess->vha->hw->hardware_lock);
709 target_sess_cmd_list_set_waiting(sess->se_sess);
710 }
711
712 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
713 const char *name)
714 {
715 struct tcm_qla2xxx_nacl *nacl =
716 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
717 u64 wwnn;
718
719 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
720 return -EINVAL;
721
722 nacl->nport_wwnn = wwnn;
723 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
724
725 return 0;
726 }
727
728 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
729
730 #define DEF_QLA_TPG_ATTRIB(name) \
731 \
732 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
733 struct se_portal_group *se_tpg, \
734 char *page) \
735 { \
736 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
737 struct tcm_qla2xxx_tpg, se_tpg); \
738 \
739 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
740 } \
741 \
742 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
743 struct se_portal_group *se_tpg, \
744 const char *page, \
745 size_t count) \
746 { \
747 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
748 struct tcm_qla2xxx_tpg, se_tpg); \
749 unsigned long val; \
750 int ret; \
751 \
752 ret = kstrtoul(page, 0, &val); \
753 if (ret < 0) { \
754 pr_err("kstrtoul() failed with" \
755 " ret: %d\n", ret); \
756 return -EINVAL; \
757 } \
758 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
759 \
760 return (!ret) ? count : -EINVAL; \
761 }
762
763 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
764 \
765 static int tcm_qla2xxx_set_attrib_##_name( \
766 struct tcm_qla2xxx_tpg *tpg, \
767 unsigned long val) \
768 { \
769 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
770 \
771 if ((val != 0) && (val != 1)) { \
772 pr_err("Illegal boolean value %lu\n", val); \
773 return -EINVAL; \
774 } \
775 \
776 a->_name = val; \
777 return 0; \
778 }
779
780 #define QLA_TPG_ATTR(_name, _mode) \
781 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
782
783 /*
784 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
785 */
786 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
787 DEF_QLA_TPG_ATTRIB(generate_node_acls);
788 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
789
790 /*
791 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
792 */
793 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
794 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
795 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
796
797 /*
798 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
799 */
800 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
801 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
802 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
803
804 /*
805 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
806 */
807 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
808 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
809 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
810
811 /*
812 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
813 */
814 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
815 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
816 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
817
818 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
819 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
820 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
821 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
822 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
823 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
824 NULL,
825 };
826
827 /* End items for tcm_qla2xxx_tpg_attrib_cit */
828
829 static ssize_t tcm_qla2xxx_tpg_show_enable(
830 struct se_portal_group *se_tpg,
831 char *page)
832 {
833 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
834 struct tcm_qla2xxx_tpg, se_tpg);
835
836 return snprintf(page, PAGE_SIZE, "%d\n",
837 atomic_read(&tpg->lport_tpg_enabled));
838 }
839
840 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
841 {
842 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
843 struct tcm_qla2xxx_tpg, tpg_base_work);
844 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
845 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
846
847 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
848 atomic_set(&base_tpg->lport_tpg_enabled, 1);
849 qlt_enable_vha(base_vha);
850 }
851 complete(&base_tpg->tpg_base_comp);
852 }
853
854 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
855 {
856 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
857 struct tcm_qla2xxx_tpg, tpg_base_work);
858 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
859 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
860
861 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
862 atomic_set(&base_tpg->lport_tpg_enabled, 0);
863 target_undepend_item(&se_tpg->tpg_group.cg_item);
864 }
865 complete(&base_tpg->tpg_base_comp);
866 }
867
868 static ssize_t tcm_qla2xxx_tpg_store_enable(
869 struct se_portal_group *se_tpg,
870 const char *page,
871 size_t count)
872 {
873 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
874 struct tcm_qla2xxx_tpg, se_tpg);
875 unsigned long op;
876 int rc;
877
878 rc = kstrtoul(page, 0, &op);
879 if (rc < 0) {
880 pr_err("kstrtoul() returned %d\n", rc);
881 return -EINVAL;
882 }
883 if ((op != 1) && (op != 0)) {
884 pr_err("Illegal value for tpg_enable: %lu\n", op);
885 return -EINVAL;
886 }
887 if (op) {
888 if (atomic_read(&tpg->lport_tpg_enabled))
889 return -EEXIST;
890
891 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
892 } else {
893 if (!atomic_read(&tpg->lport_tpg_enabled))
894 return count;
895
896 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
897 }
898 init_completion(&tpg->tpg_base_comp);
899 schedule_work(&tpg->tpg_base_work);
900 wait_for_completion(&tpg->tpg_base_comp);
901
902 if (op) {
903 if (!atomic_read(&tpg->lport_tpg_enabled))
904 return -ENODEV;
905 } else {
906 if (atomic_read(&tpg->lport_tpg_enabled))
907 return -EPERM;
908 }
909 return count;
910 }
911
912 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
913
914 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
915 struct se_portal_group *se_tpg,
916 char *page)
917 {
918 return target_show_dynamic_sessions(se_tpg, page);
919 }
920
921 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
922
923 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
924 struct se_portal_group *se_tpg,
925 const char *page,
926 size_t count)
927 {
928 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
929 struct tcm_qla2xxx_tpg, se_tpg);
930 unsigned long val;
931 int ret = kstrtoul(page, 0, &val);
932
933 if (ret) {
934 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
935 return ret;
936 }
937 if (val != 0 && val != 1 && val != 3) {
938 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
939 return -EINVAL;
940 }
941 tpg->tpg_attrib.fabric_prot_type = val;
942
943 return count;
944 }
945
946 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
947 struct se_portal_group *se_tpg,
948 char *page)
949 {
950 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
951 struct tcm_qla2xxx_tpg, se_tpg);
952
953 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
954 }
955 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
956
957 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
958 &tcm_qla2xxx_tpg_enable.attr,
959 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
960 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
961 NULL,
962 };
963
964 static struct se_portal_group *tcm_qla2xxx_make_tpg(
965 struct se_wwn *wwn,
966 struct config_group *group,
967 const char *name)
968 {
969 struct tcm_qla2xxx_lport *lport = container_of(wwn,
970 struct tcm_qla2xxx_lport, lport_wwn);
971 struct tcm_qla2xxx_tpg *tpg;
972 unsigned long tpgt;
973 int ret;
974
975 if (strstr(name, "tpgt_") != name)
976 return ERR_PTR(-EINVAL);
977 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
978 return ERR_PTR(-EINVAL);
979
980 if ((tpgt != 1)) {
981 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
982 return ERR_PTR(-ENOSYS);
983 }
984
985 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
986 if (!tpg) {
987 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
988 return ERR_PTR(-ENOMEM);
989 }
990 tpg->lport = lport;
991 tpg->lport_tpgt = tpgt;
992 /*
993 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
994 * NodeACLs
995 */
996 tpg->tpg_attrib.generate_node_acls = 1;
997 tpg->tpg_attrib.demo_mode_write_protect = 1;
998 tpg->tpg_attrib.cache_dynamic_acls = 1;
999 tpg->tpg_attrib.demo_mode_login_only = 1;
1000
1001 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1002 if (ret < 0) {
1003 kfree(tpg);
1004 return NULL;
1005 }
1006
1007 lport->tpg_1 = tpg;
1008
1009 return &tpg->se_tpg;
1010 }
1011
1012 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1013 {
1014 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1015 struct tcm_qla2xxx_tpg, se_tpg);
1016 struct tcm_qla2xxx_lport *lport = tpg->lport;
1017 struct scsi_qla_host *vha = lport->qla_vha;
1018 /*
1019 * Call into qla2x_target.c LLD logic to shutdown the active
1020 * FC Nexuses and disable target mode operation for this qla_hw_data
1021 */
1022 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1023 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1024
1025 core_tpg_deregister(se_tpg);
1026 /*
1027 * Clear local TPG=1 pointer for non NPIV mode.
1028 */
1029 lport->tpg_1 = NULL;
1030 kfree(tpg);
1031 }
1032
1033 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1034 struct se_portal_group *se_tpg,
1035 char *page)
1036 {
1037 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1038 }
1039
1040 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1041 struct se_portal_group *se_tpg,
1042 const char *page,
1043 size_t count)
1044 {
1045 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1046 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1047 struct tcm_qla2xxx_lport, lport_wwn);
1048 struct scsi_qla_host *vha = lport->qla_vha;
1049 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1050 struct tcm_qla2xxx_tpg, se_tpg);
1051 unsigned long op;
1052 int rc;
1053
1054 rc = kstrtoul(page, 0, &op);
1055 if (rc < 0) {
1056 pr_err("kstrtoul() returned %d\n", rc);
1057 return -EINVAL;
1058 }
1059 if ((op != 1) && (op != 0)) {
1060 pr_err("Illegal value for tpg_enable: %lu\n", op);
1061 return -EINVAL;
1062 }
1063 if (op) {
1064 if (atomic_read(&tpg->lport_tpg_enabled))
1065 return -EEXIST;
1066
1067 atomic_set(&tpg->lport_tpg_enabled, 1);
1068 qlt_enable_vha(vha);
1069 } else {
1070 if (!atomic_read(&tpg->lport_tpg_enabled))
1071 return count;
1072
1073 atomic_set(&tpg->lport_tpg_enabled, 0);
1074 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1075 }
1076
1077 return count;
1078 }
1079
1080 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1081
1082 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1083 &tcm_qla2xxx_npiv_tpg_enable.attr,
1084 NULL,
1085 };
1086
1087 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1088 struct se_wwn *wwn,
1089 struct config_group *group,
1090 const char *name)
1091 {
1092 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1093 struct tcm_qla2xxx_lport, lport_wwn);
1094 struct tcm_qla2xxx_tpg *tpg;
1095 unsigned long tpgt;
1096 int ret;
1097
1098 if (strstr(name, "tpgt_") != name)
1099 return ERR_PTR(-EINVAL);
1100 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1101 return ERR_PTR(-EINVAL);
1102
1103 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1104 if (!tpg) {
1105 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1106 return ERR_PTR(-ENOMEM);
1107 }
1108 tpg->lport = lport;
1109 tpg->lport_tpgt = tpgt;
1110
1111 /*
1112 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1113 * NodeACLs
1114 */
1115 tpg->tpg_attrib.generate_node_acls = 1;
1116 tpg->tpg_attrib.demo_mode_write_protect = 1;
1117 tpg->tpg_attrib.cache_dynamic_acls = 1;
1118 tpg->tpg_attrib.demo_mode_login_only = 1;
1119
1120 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1121 if (ret < 0) {
1122 kfree(tpg);
1123 return NULL;
1124 }
1125 lport->tpg_1 = tpg;
1126 return &tpg->se_tpg;
1127 }
1128
1129 /*
1130 * Expected to be called with struct qla_hw_data->hardware_lock held
1131 */
1132 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1133 scsi_qla_host_t *vha,
1134 const uint8_t *s_id)
1135 {
1136 struct tcm_qla2xxx_lport *lport;
1137 struct se_node_acl *se_nacl;
1138 struct tcm_qla2xxx_nacl *nacl;
1139 u32 key;
1140
1141 lport = vha->vha_tgt.target_lport_ptr;
1142 if (!lport) {
1143 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1144 dump_stack();
1145 return NULL;
1146 }
1147
1148 key = sid_to_key(s_id);
1149 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1150
1151 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1152 if (!se_nacl) {
1153 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1154 return NULL;
1155 }
1156 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1157 se_nacl, se_nacl->initiatorname);
1158
1159 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1160 if (!nacl->qla_tgt_sess) {
1161 pr_err("Unable to locate struct qla_tgt_sess\n");
1162 return NULL;
1163 }
1164
1165 return nacl->qla_tgt_sess;
1166 }
1167
1168 /*
1169 * Expected to be called with struct qla_hw_data->hardware_lock held
1170 */
1171 static void tcm_qla2xxx_set_sess_by_s_id(
1172 struct tcm_qla2xxx_lport *lport,
1173 struct se_node_acl *new_se_nacl,
1174 struct tcm_qla2xxx_nacl *nacl,
1175 struct se_session *se_sess,
1176 struct qla_tgt_sess *qla_tgt_sess,
1177 uint8_t *s_id)
1178 {
1179 u32 key;
1180 void *slot;
1181 int rc;
1182
1183 key = sid_to_key(s_id);
1184 pr_debug("set_sess_by_s_id: %06x\n", key);
1185
1186 slot = btree_lookup32(&lport->lport_fcport_map, key);
1187 if (!slot) {
1188 if (new_se_nacl) {
1189 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1190 nacl->nport_id = key;
1191 rc = btree_insert32(&lport->lport_fcport_map, key,
1192 new_se_nacl, GFP_ATOMIC);
1193 if (rc)
1194 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1195 (int)key);
1196 } else {
1197 pr_debug("Wiping nonexisting fc_port entry\n");
1198 }
1199
1200 qla_tgt_sess->se_sess = se_sess;
1201 nacl->qla_tgt_sess = qla_tgt_sess;
1202 return;
1203 }
1204
1205 if (nacl->qla_tgt_sess) {
1206 if (new_se_nacl == NULL) {
1207 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1208 btree_remove32(&lport->lport_fcport_map, key);
1209 nacl->qla_tgt_sess = NULL;
1210 return;
1211 }
1212 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1213 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1214 qla_tgt_sess->se_sess = se_sess;
1215 nacl->qla_tgt_sess = qla_tgt_sess;
1216 return;
1217 }
1218
1219 if (new_se_nacl == NULL) {
1220 pr_debug("Clearing existing fc_port entry\n");
1221 btree_remove32(&lport->lport_fcport_map, key);
1222 return;
1223 }
1224
1225 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1226 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1227 qla_tgt_sess->se_sess = se_sess;
1228 nacl->qla_tgt_sess = qla_tgt_sess;
1229
1230 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1231 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1232 }
1233
1234 /*
1235 * Expected to be called with struct qla_hw_data->hardware_lock held
1236 */
1237 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1238 scsi_qla_host_t *vha,
1239 const uint16_t loop_id)
1240 {
1241 struct tcm_qla2xxx_lport *lport;
1242 struct se_node_acl *se_nacl;
1243 struct tcm_qla2xxx_nacl *nacl;
1244 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1245
1246 lport = vha->vha_tgt.target_lport_ptr;
1247 if (!lport) {
1248 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1249 dump_stack();
1250 return NULL;
1251 }
1252
1253 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1254
1255 fc_loopid = lport->lport_loopid_map + loop_id;
1256 se_nacl = fc_loopid->se_nacl;
1257 if (!se_nacl) {
1258 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1259 loop_id);
1260 return NULL;
1261 }
1262
1263 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1264
1265 if (!nacl->qla_tgt_sess) {
1266 pr_err("Unable to locate struct qla_tgt_sess\n");
1267 return NULL;
1268 }
1269
1270 return nacl->qla_tgt_sess;
1271 }
1272
1273 /*
1274 * Expected to be called with struct qla_hw_data->hardware_lock held
1275 */
1276 static void tcm_qla2xxx_set_sess_by_loop_id(
1277 struct tcm_qla2xxx_lport *lport,
1278 struct se_node_acl *new_se_nacl,
1279 struct tcm_qla2xxx_nacl *nacl,
1280 struct se_session *se_sess,
1281 struct qla_tgt_sess *qla_tgt_sess,
1282 uint16_t loop_id)
1283 {
1284 struct se_node_acl *saved_nacl;
1285 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1286
1287 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1288
1289 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1290 lport->lport_loopid_map)[loop_id];
1291
1292 saved_nacl = fc_loopid->se_nacl;
1293 if (!saved_nacl) {
1294 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1295 fc_loopid->se_nacl = new_se_nacl;
1296 if (qla_tgt_sess->se_sess != se_sess)
1297 qla_tgt_sess->se_sess = se_sess;
1298 if (nacl->qla_tgt_sess != qla_tgt_sess)
1299 nacl->qla_tgt_sess = qla_tgt_sess;
1300 return;
1301 }
1302
1303 if (nacl->qla_tgt_sess) {
1304 if (new_se_nacl == NULL) {
1305 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1306 fc_loopid->se_nacl = NULL;
1307 nacl->qla_tgt_sess = NULL;
1308 return;
1309 }
1310
1311 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1312 fc_loopid->se_nacl = new_se_nacl;
1313 if (qla_tgt_sess->se_sess != se_sess)
1314 qla_tgt_sess->se_sess = se_sess;
1315 if (nacl->qla_tgt_sess != qla_tgt_sess)
1316 nacl->qla_tgt_sess = qla_tgt_sess;
1317 return;
1318 }
1319
1320 if (new_se_nacl == NULL) {
1321 pr_debug("Clearing fc_loopid->se_nacl\n");
1322 fc_loopid->se_nacl = NULL;
1323 return;
1324 }
1325
1326 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1327 fc_loopid->se_nacl = new_se_nacl;
1328 if (qla_tgt_sess->se_sess != se_sess)
1329 qla_tgt_sess->se_sess = se_sess;
1330 if (nacl->qla_tgt_sess != qla_tgt_sess)
1331 nacl->qla_tgt_sess = qla_tgt_sess;
1332
1333 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1334 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1335 }
1336
1337 /*
1338 * Should always be called with qla_hw_data->hardware_lock held.
1339 */
1340 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1341 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1342 {
1343 struct se_session *se_sess = sess->se_sess;
1344 unsigned char be_sid[3];
1345
1346 be_sid[0] = sess->s_id.b.domain;
1347 be_sid[1] = sess->s_id.b.area;
1348 be_sid[2] = sess->s_id.b.al_pa;
1349
1350 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1351 sess, be_sid);
1352 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1353 sess, sess->loop_id);
1354 }
1355
1356 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1357 {
1358 struct qla_tgt *tgt = sess->tgt;
1359 struct qla_hw_data *ha = tgt->ha;
1360 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1361 struct se_session *se_sess;
1362 struct se_node_acl *se_nacl;
1363 struct tcm_qla2xxx_lport *lport;
1364 struct tcm_qla2xxx_nacl *nacl;
1365
1366 BUG_ON(in_interrupt());
1367
1368 se_sess = sess->se_sess;
1369 if (!se_sess) {
1370 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1371 dump_stack();
1372 return;
1373 }
1374 se_nacl = se_sess->se_node_acl;
1375 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1376
1377 lport = vha->vha_tgt.target_lport_ptr;
1378 if (!lport) {
1379 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1380 dump_stack();
1381 return;
1382 }
1383 target_wait_for_sess_cmds(se_sess);
1384
1385 transport_deregister_session_configfs(sess->se_sess);
1386 transport_deregister_session(sess->se_sess);
1387 }
1388
1389 /*
1390 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1391 * to locate struct se_node_acl
1392 */
1393 static int tcm_qla2xxx_check_initiator_node_acl(
1394 scsi_qla_host_t *vha,
1395 unsigned char *fc_wwpn,
1396 void *qla_tgt_sess,
1397 uint8_t *s_id,
1398 uint16_t loop_id)
1399 {
1400 struct qla_hw_data *ha = vha->hw;
1401 struct tcm_qla2xxx_lport *lport;
1402 struct tcm_qla2xxx_tpg *tpg;
1403 struct tcm_qla2xxx_nacl *nacl;
1404 struct se_portal_group *se_tpg;
1405 struct se_node_acl *se_nacl;
1406 struct se_session *se_sess;
1407 struct qla_tgt_sess *sess = qla_tgt_sess;
1408 unsigned char port_name[36];
1409 unsigned long flags;
1410 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1411 TCM_QLA2XXX_DEFAULT_TAGS;
1412
1413 lport = vha->vha_tgt.target_lport_ptr;
1414 if (!lport) {
1415 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1416 dump_stack();
1417 return -EINVAL;
1418 }
1419 /*
1420 * Locate the TPG=1 reference..
1421 */
1422 tpg = lport->tpg_1;
1423 if (!tpg) {
1424 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1425 return -EINVAL;
1426 }
1427 se_tpg = &tpg->se_tpg;
1428
1429 se_sess = transport_init_session_tags(num_tags,
1430 sizeof(struct qla_tgt_cmd),
1431 TARGET_PROT_ALL);
1432 if (IS_ERR(se_sess)) {
1433 pr_err("Unable to initialize struct se_session\n");
1434 return PTR_ERR(se_sess);
1435 }
1436 /*
1437 * Format the FCP Initiator port_name into colon seperated values to
1438 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1439 */
1440 memset(&port_name, 0, 36);
1441 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1442 /*
1443 * Locate our struct se_node_acl either from an explict NodeACL created
1444 * via ConfigFS, or via running in TPG demo mode.
1445 */
1446 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1447 port_name);
1448 if (!se_sess->se_node_acl) {
1449 transport_free_session(se_sess);
1450 return -EINVAL;
1451 }
1452 se_nacl = se_sess->se_node_acl;
1453 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1454 /*
1455 * And now setup the new se_nacl and session pointers into our HW lport
1456 * mappings for fabric S_ID and LOOP_ID.
1457 */
1458 spin_lock_irqsave(&ha->hardware_lock, flags);
1459 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1460 qla_tgt_sess, s_id);
1461 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1462 qla_tgt_sess, loop_id);
1463 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1464 /*
1465 * Finally register the new FC Nexus with TCM
1466 */
1467 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1468
1469 return 0;
1470 }
1471
1472 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1473 uint16_t loop_id, bool conf_compl_supported)
1474 {
1475 struct qla_tgt *tgt = sess->tgt;
1476 struct qla_hw_data *ha = tgt->ha;
1477 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1478 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1479 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1480 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1481 struct tcm_qla2xxx_nacl, se_node_acl);
1482 u32 key;
1483
1484
1485 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1486 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1487 sess, sess->port_name,
1488 sess->loop_id, loop_id, sess->s_id.b.domain,
1489 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1490 s_id.b.area, s_id.b.al_pa);
1491
1492 if (sess->loop_id != loop_id) {
1493 /*
1494 * Because we can shuffle loop IDs around and we
1495 * update different sessions non-atomically, we might
1496 * have overwritten this session's old loop ID
1497 * already, and we might end up overwriting some other
1498 * session that will be updated later. So we have to
1499 * be extra careful and we can't warn about those things...
1500 */
1501 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1502 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1503
1504 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1505
1506 sess->loop_id = loop_id;
1507 }
1508
1509 if (sess->s_id.b24 != s_id.b24) {
1510 key = (((u32) sess->s_id.b.domain << 16) |
1511 ((u32) sess->s_id.b.area << 8) |
1512 ((u32) sess->s_id.b.al_pa));
1513
1514 if (btree_lookup32(&lport->lport_fcport_map, key))
1515 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1516 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1517 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1518 else
1519 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1520 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1521
1522 key = (((u32) s_id.b.domain << 16) |
1523 ((u32) s_id.b.area << 8) |
1524 ((u32) s_id.b.al_pa));
1525
1526 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1527 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1528 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1529 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1530 } else {
1531 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1532 }
1533
1534 sess->s_id = s_id;
1535 nacl->nport_id = key;
1536 }
1537
1538 sess->conf_compl_supported = conf_compl_supported;
1539
1540 /* Reset logout parameters to default */
1541 sess->logout_on_delete = 1;
1542 sess->keep_nport_handle = 0;
1543 }
1544
1545 /*
1546 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1547 */
1548 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1549 .handle_cmd = tcm_qla2xxx_handle_cmd,
1550 .handle_data = tcm_qla2xxx_handle_data,
1551 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1552 .handle_tmr = tcm_qla2xxx_handle_tmr,
1553 .free_cmd = tcm_qla2xxx_free_cmd,
1554 .free_mcmd = tcm_qla2xxx_free_mcmd,
1555 .free_session = tcm_qla2xxx_free_session,
1556 .update_sess = tcm_qla2xxx_update_sess,
1557 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1558 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1559 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1560 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1561 .put_sess = tcm_qla2xxx_put_sess,
1562 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1563 };
1564
1565 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1566 {
1567 int rc;
1568
1569 rc = btree_init32(&lport->lport_fcport_map);
1570 if (rc) {
1571 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1572 return rc;
1573 }
1574
1575 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1576 65536);
1577 if (!lport->lport_loopid_map) {
1578 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1579 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1580 btree_destroy32(&lport->lport_fcport_map);
1581 return -ENOMEM;
1582 }
1583 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1584 * 65536);
1585 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1586 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1587 return 0;
1588 }
1589
1590 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1591 void *target_lport_ptr,
1592 u64 npiv_wwpn, u64 npiv_wwnn)
1593 {
1594 struct qla_hw_data *ha = vha->hw;
1595 struct tcm_qla2xxx_lport *lport =
1596 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1597 /*
1598 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1599 */
1600 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1601 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1602 lport->qla_vha = vha;
1603
1604 return 0;
1605 }
1606
1607 static struct se_wwn *tcm_qla2xxx_make_lport(
1608 struct target_fabric_configfs *tf,
1609 struct config_group *group,
1610 const char *name)
1611 {
1612 struct tcm_qla2xxx_lport *lport;
1613 u64 wwpn;
1614 int ret = -ENODEV;
1615
1616 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1617 return ERR_PTR(-EINVAL);
1618
1619 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1620 if (!lport) {
1621 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1622 return ERR_PTR(-ENOMEM);
1623 }
1624 lport->lport_wwpn = wwpn;
1625 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1626 wwpn);
1627 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1628
1629 ret = tcm_qla2xxx_init_lport(lport);
1630 if (ret != 0)
1631 goto out;
1632
1633 ret = qlt_lport_register(lport, wwpn, 0, 0,
1634 tcm_qla2xxx_lport_register_cb);
1635 if (ret != 0)
1636 goto out_lport;
1637
1638 return &lport->lport_wwn;
1639 out_lport:
1640 vfree(lport->lport_loopid_map);
1641 btree_destroy32(&lport->lport_fcport_map);
1642 out:
1643 kfree(lport);
1644 return ERR_PTR(ret);
1645 }
1646
1647 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1648 {
1649 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1650 struct tcm_qla2xxx_lport, lport_wwn);
1651 struct scsi_qla_host *vha = lport->qla_vha;
1652 struct se_node_acl *node;
1653 u32 key = 0;
1654
1655 /*
1656 * Call into qla2x_target.c LLD logic to complete the
1657 * shutdown of struct qla_tgt after the call to
1658 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1659 */
1660 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1661 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1662
1663 qlt_lport_deregister(vha);
1664
1665 vfree(lport->lport_loopid_map);
1666 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1667 btree_remove32(&lport->lport_fcport_map, key);
1668 btree_destroy32(&lport->lport_fcport_map);
1669 kfree(lport);
1670 }
1671
1672 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1673 void *target_lport_ptr,
1674 u64 npiv_wwpn, u64 npiv_wwnn)
1675 {
1676 struct fc_vport *vport;
1677 struct Scsi_Host *sh = base_vha->host;
1678 struct scsi_qla_host *npiv_vha;
1679 struct tcm_qla2xxx_lport *lport =
1680 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1681 struct tcm_qla2xxx_lport *base_lport =
1682 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1683 struct tcm_qla2xxx_tpg *base_tpg;
1684 struct fc_vport_identifiers vport_id;
1685
1686 if (!qla_tgt_mode_enabled(base_vha)) {
1687 pr_err("qla2xxx base_vha not enabled for target mode\n");
1688 return -EPERM;
1689 }
1690
1691 if (!base_lport || !base_lport->tpg_1 ||
1692 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1693 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1694 return -EPERM;
1695 }
1696 base_tpg = base_lport->tpg_1;
1697
1698 memset(&vport_id, 0, sizeof(vport_id));
1699 vport_id.port_name = npiv_wwpn;
1700 vport_id.node_name = npiv_wwnn;
1701 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1702 vport_id.vport_type = FC_PORTTYPE_NPIV;
1703 vport_id.disable = false;
1704
1705 vport = fc_vport_create(sh, 0, &vport_id);
1706 if (!vport) {
1707 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1708 return -ENODEV;
1709 }
1710 /*
1711 * Setup local pointer to NPIV vhba + target_lport_ptr
1712 */
1713 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1714 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1715 lport->qla_vha = npiv_vha;
1716 scsi_host_get(npiv_vha->host);
1717 return 0;
1718 }
1719
1720
1721 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1722 struct target_fabric_configfs *tf,
1723 struct config_group *group,
1724 const char *name)
1725 {
1726 struct tcm_qla2xxx_lport *lport;
1727 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1728 char *p, tmp[128];
1729 int ret;
1730
1731 snprintf(tmp, 128, "%s", name);
1732
1733 p = strchr(tmp, '@');
1734 if (!p) {
1735 pr_err("Unable to locate NPIV '@' seperator\n");
1736 return ERR_PTR(-EINVAL);
1737 }
1738 *p++ = '\0';
1739
1740 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1741 return ERR_PTR(-EINVAL);
1742
1743 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1744 &npiv_wwpn, &npiv_wwnn) < 0)
1745 return ERR_PTR(-EINVAL);
1746
1747 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1748 if (!lport) {
1749 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1750 return ERR_PTR(-ENOMEM);
1751 }
1752 lport->lport_npiv_wwpn = npiv_wwpn;
1753 lport->lport_npiv_wwnn = npiv_wwnn;
1754 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1755
1756 ret = tcm_qla2xxx_init_lport(lport);
1757 if (ret != 0)
1758 goto out;
1759
1760 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1761 tcm_qla2xxx_lport_register_npiv_cb);
1762 if (ret != 0)
1763 goto out_lport;
1764
1765 return &lport->lport_wwn;
1766 out_lport:
1767 vfree(lport->lport_loopid_map);
1768 btree_destroy32(&lport->lport_fcport_map);
1769 out:
1770 kfree(lport);
1771 return ERR_PTR(ret);
1772 }
1773
1774 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1775 {
1776 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1777 struct tcm_qla2xxx_lport, lport_wwn);
1778 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1779 struct qla_hw_data *ha = npiv_vha->hw;
1780 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1781
1782 scsi_host_put(npiv_vha->host);
1783 /*
1784 * Notify libfc that we want to release the vha->fc_vport
1785 */
1786 fc_vport_terminate(npiv_vha->fc_vport);
1787 scsi_host_put(base_vha->host);
1788 kfree(lport);
1789 }
1790
1791
1792 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1793 struct target_fabric_configfs *tf,
1794 char *page)
1795 {
1796 return sprintf(page,
1797 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1798 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1799 utsname()->machine);
1800 }
1801
1802 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1803
1804 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1805 &tcm_qla2xxx_wwn_version.attr,
1806 NULL,
1807 };
1808
1809 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1810 .module = THIS_MODULE,
1811 .name = "qla2xxx",
1812 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1813 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1814 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1815 .tpg_get_tag = tcm_qla2xxx_get_tag,
1816 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1817 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1818 .tpg_check_demo_mode_write_protect =
1819 tcm_qla2xxx_check_demo_write_protect,
1820 .tpg_check_prod_mode_write_protect =
1821 tcm_qla2xxx_check_prod_write_protect,
1822 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1823 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1824 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1825 .check_stop_free = tcm_qla2xxx_check_stop_free,
1826 .release_cmd = tcm_qla2xxx_release_cmd,
1827 .shutdown_session = tcm_qla2xxx_shutdown_session,
1828 .close_session = tcm_qla2xxx_close_session,
1829 .sess_get_index = tcm_qla2xxx_sess_get_index,
1830 .sess_get_initiator_sid = NULL,
1831 .write_pending = tcm_qla2xxx_write_pending,
1832 .write_pending_status = tcm_qla2xxx_write_pending_status,
1833 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1834 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1835 .queue_data_in = tcm_qla2xxx_queue_data_in,
1836 .queue_status = tcm_qla2xxx_queue_status,
1837 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1838 .aborted_task = tcm_qla2xxx_aborted_task,
1839 /*
1840 * Setup function pointers for generic logic in
1841 * target_core_fabric_configfs.c
1842 */
1843 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1844 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1845 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1846 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1847 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1848
1849 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1850 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1851 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1852 };
1853
1854 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1855 .module = THIS_MODULE,
1856 .name = "qla2xxx_npiv",
1857 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1858 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1859 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1860 .tpg_get_tag = tcm_qla2xxx_get_tag,
1861 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1862 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1863 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1864 .tpg_check_prod_mode_write_protect =
1865 tcm_qla2xxx_check_prod_write_protect,
1866 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1867 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1868 .check_stop_free = tcm_qla2xxx_check_stop_free,
1869 .release_cmd = tcm_qla2xxx_release_cmd,
1870 .shutdown_session = tcm_qla2xxx_shutdown_session,
1871 .close_session = tcm_qla2xxx_close_session,
1872 .sess_get_index = tcm_qla2xxx_sess_get_index,
1873 .sess_get_initiator_sid = NULL,
1874 .write_pending = tcm_qla2xxx_write_pending,
1875 .write_pending_status = tcm_qla2xxx_write_pending_status,
1876 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1877 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1878 .queue_data_in = tcm_qla2xxx_queue_data_in,
1879 .queue_status = tcm_qla2xxx_queue_status,
1880 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1881 .aborted_task = tcm_qla2xxx_aborted_task,
1882 /*
1883 * Setup function pointers for generic logic in
1884 * target_core_fabric_configfs.c
1885 */
1886 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1887 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1888 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1889 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1890 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1891
1892 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1893 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1894 };
1895
1896 static int tcm_qla2xxx_register_configfs(void)
1897 {
1898 int ret;
1899
1900 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1901 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1902 utsname()->machine);
1903
1904 ret = target_register_template(&tcm_qla2xxx_ops);
1905 if (ret)
1906 return ret;
1907
1908 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1909 if (ret)
1910 goto out_fabric;
1911
1912 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1913 WQ_MEM_RECLAIM, 0);
1914 if (!tcm_qla2xxx_free_wq) {
1915 ret = -ENOMEM;
1916 goto out_fabric_npiv;
1917 }
1918
1919 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1920 if (!tcm_qla2xxx_cmd_wq) {
1921 ret = -ENOMEM;
1922 goto out_free_wq;
1923 }
1924
1925 return 0;
1926
1927 out_free_wq:
1928 destroy_workqueue(tcm_qla2xxx_free_wq);
1929 out_fabric_npiv:
1930 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1931 out_fabric:
1932 target_unregister_template(&tcm_qla2xxx_ops);
1933 return ret;
1934 }
1935
1936 static void tcm_qla2xxx_deregister_configfs(void)
1937 {
1938 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1939 destroy_workqueue(tcm_qla2xxx_free_wq);
1940
1941 target_unregister_template(&tcm_qla2xxx_ops);
1942 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1943 }
1944
1945 static int __init tcm_qla2xxx_init(void)
1946 {
1947 int ret;
1948
1949 ret = tcm_qla2xxx_register_configfs();
1950 if (ret < 0)
1951 return ret;
1952
1953 return 0;
1954 }
1955
1956 static void __exit tcm_qla2xxx_exit(void)
1957 {
1958 tcm_qla2xxx_deregister_configfs();
1959 }
1960
1961 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1962 MODULE_LICENSE("GPL");
1963 module_init(tcm_qla2xxx_init);
1964 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support