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[mirror_ubuntu-jammy-kernel.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
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
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 3000);
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 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
551
552 cmd->sg_cnt = se_cmd->t_data_nents;
553 cmd->sg = se_cmd->t_data_sg;
554 cmd->offset = 0;
555 cmd->cmd_flags |= BIT_3;
556
557 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
558 cmd->prot_sg = se_cmd->t_prot_sg;
559 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
560 se_cmd->pi_err = 0;
561
562 /*
563 * Now queue completed DATA_IN the qla2xxx LLD and response ring
564 */
565 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
566 se_cmd->scsi_status);
567 }
568
569 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
570 {
571 struct qla_tgt_cmd *cmd = container_of(se_cmd,
572 struct qla_tgt_cmd, se_cmd);
573 int xmit_type = QLA_TGT_XMIT_STATUS;
574
575 cmd->bufflen = se_cmd->data_length;
576 cmd->sg = NULL;
577 cmd->sg_cnt = 0;
578 cmd->offset = 0;
579 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
580 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
581 if (cmd->cmd_flags & BIT_5) {
582 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
583 dump_stack();
584 }
585 cmd->cmd_flags |= BIT_5;
586
587 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
588 /*
589 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
590 * for qla_tgt_xmit_response LLD code
591 */
592 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
593 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
594 se_cmd->residual_count = 0;
595 }
596 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
597 se_cmd->residual_count += se_cmd->data_length;
598
599 cmd->bufflen = 0;
600 }
601 /*
602 * Now queue status response to qla2xxx LLD code and response ring
603 */
604 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
605 }
606
607 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
608 {
609 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
610 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
611 struct qla_tgt_mgmt_cmd, se_cmd);
612
613 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
614 mcmd, se_tmr->function, se_tmr->response);
615 /*
616 * Do translation between TCM TM response codes and
617 * QLA2xxx FC TM response codes.
618 */
619 switch (se_tmr->response) {
620 case TMR_FUNCTION_COMPLETE:
621 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
622 break;
623 case TMR_TASK_DOES_NOT_EXIST:
624 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
625 break;
626 case TMR_FUNCTION_REJECTED:
627 mcmd->fc_tm_rsp = FC_TM_REJECT;
628 break;
629 case TMR_LUN_DOES_NOT_EXIST:
630 default:
631 mcmd->fc_tm_rsp = FC_TM_FAILED;
632 break;
633 }
634 /*
635 * Queue the TM response to QLA2xxx LLD to build a
636 * CTIO response packet.
637 */
638 qlt_xmit_tm_rsp(mcmd);
639 }
640
641 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
642 {
643 struct qla_tgt_cmd *cmd = container_of(se_cmd,
644 struct qla_tgt_cmd, se_cmd);
645 struct scsi_qla_host *vha = cmd->vha;
646 struct qla_hw_data *ha = vha->hw;
647
648 if (!cmd->sg_mapped)
649 return;
650
651 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
652 cmd->sg_mapped = 0;
653 }
654
655 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
656 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
657 /*
658 * Expected to be called with struct qla_hw_data->hardware_lock held
659 */
660 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
661 {
662 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
663 struct se_portal_group *se_tpg = se_nacl->se_tpg;
664 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
665 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
666 struct tcm_qla2xxx_lport, lport_wwn);
667 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
668 struct tcm_qla2xxx_nacl, se_node_acl);
669 void *node;
670
671 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
672
673 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
674 if (WARN_ON(node && (node != se_nacl))) {
675 /*
676 * The nacl no longer matches what we think it should be.
677 * Most likely a new dynamic acl has been added while
678 * someone dropped the hardware lock. It clearly is a
679 * bug elsewhere, but this bit can't make things worse.
680 */
681 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
682 node, GFP_ATOMIC);
683 }
684
685 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
686 se_nacl, nacl->nport_wwnn, nacl->nport_id);
687 /*
688 * Now clear the se_nacl and session pointers from our HW lport lookup
689 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
690 *
691 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
692 * target_wait_for_sess_cmds() before the session waits for outstanding
693 * I/O to complete, to avoid a race between session shutdown execution
694 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
695 */
696 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
697 }
698
699 static void tcm_qla2xxx_release_session(struct kref *kref)
700 {
701 struct se_session *se_sess = container_of(kref,
702 struct se_session, sess_kref);
703
704 qlt_unreg_sess(se_sess->fabric_sess_ptr);
705 }
706
707 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
708 {
709 if (!sess)
710 return;
711
712 assert_spin_locked(&sess->vha->hw->hardware_lock);
713 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
714 }
715
716 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
717 {
718 assert_spin_locked(&sess->vha->hw->hardware_lock);
719 target_sess_cmd_list_set_waiting(sess->se_sess);
720 }
721
722 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
723 const char *name)
724 {
725 struct tcm_qla2xxx_nacl *nacl =
726 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
727 u64 wwnn;
728
729 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
730 return -EINVAL;
731
732 nacl->nport_wwnn = wwnn;
733 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
734
735 return 0;
736 }
737
738 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
739
740 #define DEF_QLA_TPG_ATTRIB(name) \
741 \
742 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
743 struct se_portal_group *se_tpg, \
744 char *page) \
745 { \
746 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
747 struct tcm_qla2xxx_tpg, se_tpg); \
748 \
749 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
750 } \
751 \
752 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
753 struct se_portal_group *se_tpg, \
754 const char *page, \
755 size_t count) \
756 { \
757 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
758 struct tcm_qla2xxx_tpg, se_tpg); \
759 unsigned long val; \
760 int ret; \
761 \
762 ret = kstrtoul(page, 0, &val); \
763 if (ret < 0) { \
764 pr_err("kstrtoul() failed with" \
765 " ret: %d\n", ret); \
766 return -EINVAL; \
767 } \
768 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
769 \
770 return (!ret) ? count : -EINVAL; \
771 }
772
773 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
774 \
775 static int tcm_qla2xxx_set_attrib_##_name( \
776 struct tcm_qla2xxx_tpg *tpg, \
777 unsigned long val) \
778 { \
779 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
780 \
781 if ((val != 0) && (val != 1)) { \
782 pr_err("Illegal boolean value %lu\n", val); \
783 return -EINVAL; \
784 } \
785 \
786 a->_name = val; \
787 return 0; \
788 }
789
790 #define QLA_TPG_ATTR(_name, _mode) \
791 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
792
793 /*
794 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
795 */
796 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
797 DEF_QLA_TPG_ATTRIB(generate_node_acls);
798 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
799
800 /*
801 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
802 */
803 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
804 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
805 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
806
807 /*
808 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
809 */
810 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
811 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
812 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
813
814 /*
815 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
816 */
817 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
818 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
819 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
820
821 /*
822 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
823 */
824 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
825 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
826 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
827
828 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
829 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
830 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
831 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
832 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
833 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
834 NULL,
835 };
836
837 /* End items for tcm_qla2xxx_tpg_attrib_cit */
838
839 static ssize_t tcm_qla2xxx_tpg_show_enable(
840 struct se_portal_group *se_tpg,
841 char *page)
842 {
843 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
844 struct tcm_qla2xxx_tpg, se_tpg);
845
846 return snprintf(page, PAGE_SIZE, "%d\n",
847 atomic_read(&tpg->lport_tpg_enabled));
848 }
849
850 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
851 {
852 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
853 struct tcm_qla2xxx_tpg, tpg_base_work);
854 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
855 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
856
857 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
858 atomic_set(&base_tpg->lport_tpg_enabled, 1);
859 qlt_enable_vha(base_vha);
860 }
861 complete(&base_tpg->tpg_base_comp);
862 }
863
864 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
865 {
866 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
867 struct tcm_qla2xxx_tpg, tpg_base_work);
868 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
869 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
870
871 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
872 atomic_set(&base_tpg->lport_tpg_enabled, 0);
873 target_undepend_item(&se_tpg->tpg_group.cg_item);
874 }
875 complete(&base_tpg->tpg_base_comp);
876 }
877
878 static ssize_t tcm_qla2xxx_tpg_store_enable(
879 struct se_portal_group *se_tpg,
880 const char *page,
881 size_t count)
882 {
883 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
884 struct tcm_qla2xxx_tpg, se_tpg);
885 unsigned long op;
886 int rc;
887
888 rc = kstrtoul(page, 0, &op);
889 if (rc < 0) {
890 pr_err("kstrtoul() returned %d\n", rc);
891 return -EINVAL;
892 }
893 if ((op != 1) && (op != 0)) {
894 pr_err("Illegal value for tpg_enable: %lu\n", op);
895 return -EINVAL;
896 }
897 if (op) {
898 if (atomic_read(&tpg->lport_tpg_enabled))
899 return -EEXIST;
900
901 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
902 } else {
903 if (!atomic_read(&tpg->lport_tpg_enabled))
904 return count;
905
906 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
907 }
908 init_completion(&tpg->tpg_base_comp);
909 schedule_work(&tpg->tpg_base_work);
910 wait_for_completion(&tpg->tpg_base_comp);
911
912 if (op) {
913 if (!atomic_read(&tpg->lport_tpg_enabled))
914 return -ENODEV;
915 } else {
916 if (atomic_read(&tpg->lport_tpg_enabled))
917 return -EPERM;
918 }
919 return count;
920 }
921
922 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
923
924 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
925 struct se_portal_group *se_tpg,
926 char *page)
927 {
928 return target_show_dynamic_sessions(se_tpg, page);
929 }
930
931 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
932
933 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
934 struct se_portal_group *se_tpg,
935 const char *page,
936 size_t count)
937 {
938 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
939 struct tcm_qla2xxx_tpg, se_tpg);
940 unsigned long val;
941 int ret = kstrtoul(page, 0, &val);
942
943 if (ret) {
944 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
945 return ret;
946 }
947 if (val != 0 && val != 1 && val != 3) {
948 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
949 return -EINVAL;
950 }
951 tpg->tpg_attrib.fabric_prot_type = val;
952
953 return count;
954 }
955
956 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
957 struct se_portal_group *se_tpg,
958 char *page)
959 {
960 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
961 struct tcm_qla2xxx_tpg, se_tpg);
962
963 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
964 }
965 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
966
967 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
968 &tcm_qla2xxx_tpg_enable.attr,
969 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
970 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
971 NULL,
972 };
973
974 static struct se_portal_group *tcm_qla2xxx_make_tpg(
975 struct se_wwn *wwn,
976 struct config_group *group,
977 const char *name)
978 {
979 struct tcm_qla2xxx_lport *lport = container_of(wwn,
980 struct tcm_qla2xxx_lport, lport_wwn);
981 struct tcm_qla2xxx_tpg *tpg;
982 unsigned long tpgt;
983 int ret;
984
985 if (strstr(name, "tpgt_") != name)
986 return ERR_PTR(-EINVAL);
987 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
988 return ERR_PTR(-EINVAL);
989
990 if ((tpgt != 1)) {
991 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
992 return ERR_PTR(-ENOSYS);
993 }
994
995 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
996 if (!tpg) {
997 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
998 return ERR_PTR(-ENOMEM);
999 }
1000 tpg->lport = lport;
1001 tpg->lport_tpgt = tpgt;
1002 /*
1003 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1004 * NodeACLs
1005 */
1006 tpg->tpg_attrib.generate_node_acls = 1;
1007 tpg->tpg_attrib.demo_mode_write_protect = 1;
1008 tpg->tpg_attrib.cache_dynamic_acls = 1;
1009 tpg->tpg_attrib.demo_mode_login_only = 1;
1010
1011 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1012 if (ret < 0) {
1013 kfree(tpg);
1014 return NULL;
1015 }
1016
1017 lport->tpg_1 = tpg;
1018
1019 return &tpg->se_tpg;
1020 }
1021
1022 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1023 {
1024 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1025 struct tcm_qla2xxx_tpg, se_tpg);
1026 struct tcm_qla2xxx_lport *lport = tpg->lport;
1027 struct scsi_qla_host *vha = lport->qla_vha;
1028 /*
1029 * Call into qla2x_target.c LLD logic to shutdown the active
1030 * FC Nexuses and disable target mode operation for this qla_hw_data
1031 */
1032 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1033 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1034
1035 core_tpg_deregister(se_tpg);
1036 /*
1037 * Clear local TPG=1 pointer for non NPIV mode.
1038 */
1039 lport->tpg_1 = NULL;
1040 kfree(tpg);
1041 }
1042
1043 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1044 struct se_portal_group *se_tpg,
1045 char *page)
1046 {
1047 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1048 }
1049
1050 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1051 struct se_portal_group *se_tpg,
1052 const char *page,
1053 size_t count)
1054 {
1055 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1056 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1057 struct tcm_qla2xxx_lport, lport_wwn);
1058 struct scsi_qla_host *vha = lport->qla_vha;
1059 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1060 struct tcm_qla2xxx_tpg, se_tpg);
1061 unsigned long op;
1062 int rc;
1063
1064 rc = kstrtoul(page, 0, &op);
1065 if (rc < 0) {
1066 pr_err("kstrtoul() returned %d\n", rc);
1067 return -EINVAL;
1068 }
1069 if ((op != 1) && (op != 0)) {
1070 pr_err("Illegal value for tpg_enable: %lu\n", op);
1071 return -EINVAL;
1072 }
1073 if (op) {
1074 if (atomic_read(&tpg->lport_tpg_enabled))
1075 return -EEXIST;
1076
1077 atomic_set(&tpg->lport_tpg_enabled, 1);
1078 qlt_enable_vha(vha);
1079 } else {
1080 if (!atomic_read(&tpg->lport_tpg_enabled))
1081 return count;
1082
1083 atomic_set(&tpg->lport_tpg_enabled, 0);
1084 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1085 }
1086
1087 return count;
1088 }
1089
1090 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1091
1092 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1093 &tcm_qla2xxx_npiv_tpg_enable.attr,
1094 NULL,
1095 };
1096
1097 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1098 struct se_wwn *wwn,
1099 struct config_group *group,
1100 const char *name)
1101 {
1102 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1103 struct tcm_qla2xxx_lport, lport_wwn);
1104 struct tcm_qla2xxx_tpg *tpg;
1105 unsigned long tpgt;
1106 int ret;
1107
1108 if (strstr(name, "tpgt_") != name)
1109 return ERR_PTR(-EINVAL);
1110 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1111 return ERR_PTR(-EINVAL);
1112
1113 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1114 if (!tpg) {
1115 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1116 return ERR_PTR(-ENOMEM);
1117 }
1118 tpg->lport = lport;
1119 tpg->lport_tpgt = tpgt;
1120
1121 /*
1122 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1123 * NodeACLs
1124 */
1125 tpg->tpg_attrib.generate_node_acls = 1;
1126 tpg->tpg_attrib.demo_mode_write_protect = 1;
1127 tpg->tpg_attrib.cache_dynamic_acls = 1;
1128 tpg->tpg_attrib.demo_mode_login_only = 1;
1129
1130 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1131 if (ret < 0) {
1132 kfree(tpg);
1133 return NULL;
1134 }
1135 lport->tpg_1 = tpg;
1136 return &tpg->se_tpg;
1137 }
1138
1139 /*
1140 * Expected to be called with struct qla_hw_data->hardware_lock held
1141 */
1142 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1143 scsi_qla_host_t *vha,
1144 const uint8_t *s_id)
1145 {
1146 struct tcm_qla2xxx_lport *lport;
1147 struct se_node_acl *se_nacl;
1148 struct tcm_qla2xxx_nacl *nacl;
1149 u32 key;
1150
1151 lport = vha->vha_tgt.target_lport_ptr;
1152 if (!lport) {
1153 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1154 dump_stack();
1155 return NULL;
1156 }
1157
1158 key = (((unsigned long)s_id[0] << 16) |
1159 ((unsigned long)s_id[1] << 8) |
1160 (unsigned long)s_id[2]);
1161 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1162
1163 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1164 if (!se_nacl) {
1165 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1166 return NULL;
1167 }
1168 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1169 se_nacl, se_nacl->initiatorname);
1170
1171 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1172 if (!nacl->qla_tgt_sess) {
1173 pr_err("Unable to locate struct qla_tgt_sess\n");
1174 return NULL;
1175 }
1176
1177 return nacl->qla_tgt_sess;
1178 }
1179
1180 /*
1181 * Expected to be called with struct qla_hw_data->hardware_lock held
1182 */
1183 static void tcm_qla2xxx_set_sess_by_s_id(
1184 struct tcm_qla2xxx_lport *lport,
1185 struct se_node_acl *new_se_nacl,
1186 struct tcm_qla2xxx_nacl *nacl,
1187 struct se_session *se_sess,
1188 struct qla_tgt_sess *qla_tgt_sess,
1189 uint8_t *s_id)
1190 {
1191 u32 key;
1192 void *slot;
1193 int rc;
1194
1195 key = (((unsigned long)s_id[0] << 16) |
1196 ((unsigned long)s_id[1] << 8) |
1197 (unsigned long)s_id[2]);
1198 pr_debug("set_sess_by_s_id: %06x\n", key);
1199
1200 slot = btree_lookup32(&lport->lport_fcport_map, key);
1201 if (!slot) {
1202 if (new_se_nacl) {
1203 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1204 nacl->nport_id = key;
1205 rc = btree_insert32(&lport->lport_fcport_map, key,
1206 new_se_nacl, GFP_ATOMIC);
1207 if (rc)
1208 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1209 (int)key);
1210 } else {
1211 pr_debug("Wiping nonexisting fc_port entry\n");
1212 }
1213
1214 qla_tgt_sess->se_sess = se_sess;
1215 nacl->qla_tgt_sess = qla_tgt_sess;
1216 return;
1217 }
1218
1219 if (nacl->qla_tgt_sess) {
1220 if (new_se_nacl == NULL) {
1221 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1222 btree_remove32(&lport->lport_fcport_map, key);
1223 nacl->qla_tgt_sess = NULL;
1224 return;
1225 }
1226 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1227 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1228 qla_tgt_sess->se_sess = se_sess;
1229 nacl->qla_tgt_sess = qla_tgt_sess;
1230 return;
1231 }
1232
1233 if (new_se_nacl == NULL) {
1234 pr_debug("Clearing existing fc_port entry\n");
1235 btree_remove32(&lport->lport_fcport_map, key);
1236 return;
1237 }
1238
1239 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1240 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1241 qla_tgt_sess->se_sess = se_sess;
1242 nacl->qla_tgt_sess = qla_tgt_sess;
1243
1244 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1245 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1246 }
1247
1248 /*
1249 * Expected to be called with struct qla_hw_data->hardware_lock held
1250 */
1251 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1252 scsi_qla_host_t *vha,
1253 const uint16_t loop_id)
1254 {
1255 struct tcm_qla2xxx_lport *lport;
1256 struct se_node_acl *se_nacl;
1257 struct tcm_qla2xxx_nacl *nacl;
1258 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1259
1260 lport = vha->vha_tgt.target_lport_ptr;
1261 if (!lport) {
1262 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1263 dump_stack();
1264 return NULL;
1265 }
1266
1267 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1268
1269 fc_loopid = lport->lport_loopid_map + loop_id;
1270 se_nacl = fc_loopid->se_nacl;
1271 if (!se_nacl) {
1272 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1273 loop_id);
1274 return NULL;
1275 }
1276
1277 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1278
1279 if (!nacl->qla_tgt_sess) {
1280 pr_err("Unable to locate struct qla_tgt_sess\n");
1281 return NULL;
1282 }
1283
1284 return nacl->qla_tgt_sess;
1285 }
1286
1287 /*
1288 * Expected to be called with struct qla_hw_data->hardware_lock held
1289 */
1290 static void tcm_qla2xxx_set_sess_by_loop_id(
1291 struct tcm_qla2xxx_lport *lport,
1292 struct se_node_acl *new_se_nacl,
1293 struct tcm_qla2xxx_nacl *nacl,
1294 struct se_session *se_sess,
1295 struct qla_tgt_sess *qla_tgt_sess,
1296 uint16_t loop_id)
1297 {
1298 struct se_node_acl *saved_nacl;
1299 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1300
1301 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1302
1303 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1304 lport->lport_loopid_map)[loop_id];
1305
1306 saved_nacl = fc_loopid->se_nacl;
1307 if (!saved_nacl) {
1308 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1309 fc_loopid->se_nacl = new_se_nacl;
1310 if (qla_tgt_sess->se_sess != se_sess)
1311 qla_tgt_sess->se_sess = se_sess;
1312 if (nacl->qla_tgt_sess != qla_tgt_sess)
1313 nacl->qla_tgt_sess = qla_tgt_sess;
1314 return;
1315 }
1316
1317 if (nacl->qla_tgt_sess) {
1318 if (new_se_nacl == NULL) {
1319 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1320 fc_loopid->se_nacl = NULL;
1321 nacl->qla_tgt_sess = NULL;
1322 return;
1323 }
1324
1325 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1326 fc_loopid->se_nacl = new_se_nacl;
1327 if (qla_tgt_sess->se_sess != se_sess)
1328 qla_tgt_sess->se_sess = se_sess;
1329 if (nacl->qla_tgt_sess != qla_tgt_sess)
1330 nacl->qla_tgt_sess = qla_tgt_sess;
1331 return;
1332 }
1333
1334 if (new_se_nacl == NULL) {
1335 pr_debug("Clearing fc_loopid->se_nacl\n");
1336 fc_loopid->se_nacl = NULL;
1337 return;
1338 }
1339
1340 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1341 fc_loopid->se_nacl = new_se_nacl;
1342 if (qla_tgt_sess->se_sess != se_sess)
1343 qla_tgt_sess->se_sess = se_sess;
1344 if (nacl->qla_tgt_sess != qla_tgt_sess)
1345 nacl->qla_tgt_sess = qla_tgt_sess;
1346
1347 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1348 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1349 }
1350
1351 /*
1352 * Should always be called with qla_hw_data->hardware_lock held.
1353 */
1354 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1355 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1356 {
1357 struct se_session *se_sess = sess->se_sess;
1358 unsigned char be_sid[3];
1359
1360 be_sid[0] = sess->s_id.b.domain;
1361 be_sid[1] = sess->s_id.b.area;
1362 be_sid[2] = sess->s_id.b.al_pa;
1363
1364 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1365 sess, be_sid);
1366 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1367 sess, sess->loop_id);
1368 }
1369
1370 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1371 {
1372 struct qla_tgt *tgt = sess->tgt;
1373 struct qla_hw_data *ha = tgt->ha;
1374 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1375 struct se_session *se_sess;
1376 struct se_node_acl *se_nacl;
1377 struct tcm_qla2xxx_lport *lport;
1378 struct tcm_qla2xxx_nacl *nacl;
1379
1380 BUG_ON(in_interrupt());
1381
1382 se_sess = sess->se_sess;
1383 if (!se_sess) {
1384 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1385 dump_stack();
1386 return;
1387 }
1388 se_nacl = se_sess->se_node_acl;
1389 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1390
1391 lport = vha->vha_tgt.target_lport_ptr;
1392 if (!lport) {
1393 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1394 dump_stack();
1395 return;
1396 }
1397 target_wait_for_sess_cmds(se_sess);
1398
1399 transport_deregister_session_configfs(sess->se_sess);
1400 transport_deregister_session(sess->se_sess);
1401 }
1402
1403 /*
1404 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1405 * to locate struct se_node_acl
1406 */
1407 static int tcm_qla2xxx_check_initiator_node_acl(
1408 scsi_qla_host_t *vha,
1409 unsigned char *fc_wwpn,
1410 void *qla_tgt_sess,
1411 uint8_t *s_id,
1412 uint16_t loop_id)
1413 {
1414 struct qla_hw_data *ha = vha->hw;
1415 struct tcm_qla2xxx_lport *lport;
1416 struct tcm_qla2xxx_tpg *tpg;
1417 struct tcm_qla2xxx_nacl *nacl;
1418 struct se_portal_group *se_tpg;
1419 struct se_node_acl *se_nacl;
1420 struct se_session *se_sess;
1421 struct qla_tgt_sess *sess = qla_tgt_sess;
1422 unsigned char port_name[36];
1423 unsigned long flags;
1424 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1425 TCM_QLA2XXX_DEFAULT_TAGS;
1426
1427 lport = vha->vha_tgt.target_lport_ptr;
1428 if (!lport) {
1429 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1430 dump_stack();
1431 return -EINVAL;
1432 }
1433 /*
1434 * Locate the TPG=1 reference..
1435 */
1436 tpg = lport->tpg_1;
1437 if (!tpg) {
1438 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1439 return -EINVAL;
1440 }
1441 se_tpg = &tpg->se_tpg;
1442
1443 se_sess = transport_init_session_tags(num_tags,
1444 sizeof(struct qla_tgt_cmd),
1445 TARGET_PROT_ALL);
1446 if (IS_ERR(se_sess)) {
1447 pr_err("Unable to initialize struct se_session\n");
1448 return PTR_ERR(se_sess);
1449 }
1450 /*
1451 * Format the FCP Initiator port_name into colon seperated values to
1452 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1453 */
1454 memset(&port_name, 0, 36);
1455 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1456 /*
1457 * Locate our struct se_node_acl either from an explict NodeACL created
1458 * via ConfigFS, or via running in TPG demo mode.
1459 */
1460 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1461 port_name);
1462 if (!se_sess->se_node_acl) {
1463 transport_free_session(se_sess);
1464 return -EINVAL;
1465 }
1466 se_nacl = se_sess->se_node_acl;
1467 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1468 /*
1469 * And now setup the new se_nacl and session pointers into our HW lport
1470 * mappings for fabric S_ID and LOOP_ID.
1471 */
1472 spin_lock_irqsave(&ha->hardware_lock, flags);
1473 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1474 qla_tgt_sess, s_id);
1475 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1476 qla_tgt_sess, loop_id);
1477 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1478 /*
1479 * Finally register the new FC Nexus with TCM
1480 */
1481 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1482
1483 return 0;
1484 }
1485
1486 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1487 uint16_t loop_id, bool conf_compl_supported)
1488 {
1489 struct qla_tgt *tgt = sess->tgt;
1490 struct qla_hw_data *ha = tgt->ha;
1491 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1492 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1493 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1494 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1495 struct tcm_qla2xxx_nacl, se_node_acl);
1496 u32 key;
1497
1498
1499 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1500 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1501 sess, sess->port_name,
1502 sess->loop_id, loop_id, sess->s_id.b.domain,
1503 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1504 s_id.b.area, s_id.b.al_pa);
1505
1506 if (sess->loop_id != loop_id) {
1507 /*
1508 * Because we can shuffle loop IDs around and we
1509 * update different sessions non-atomically, we might
1510 * have overwritten this session's old loop ID
1511 * already, and we might end up overwriting some other
1512 * session that will be updated later. So we have to
1513 * be extra careful and we can't warn about those things...
1514 */
1515 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1516 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1517
1518 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1519
1520 sess->loop_id = loop_id;
1521 }
1522
1523 if (sess->s_id.b24 != s_id.b24) {
1524 key = (((u32) sess->s_id.b.domain << 16) |
1525 ((u32) sess->s_id.b.area << 8) |
1526 ((u32) sess->s_id.b.al_pa));
1527
1528 if (btree_lookup32(&lport->lport_fcport_map, key))
1529 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1530 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1531 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1532 else
1533 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1534 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1535
1536 key = (((u32) s_id.b.domain << 16) |
1537 ((u32) s_id.b.area << 8) |
1538 ((u32) s_id.b.al_pa));
1539
1540 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1541 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1542 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1543 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1544 } else {
1545 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1546 }
1547
1548 sess->s_id = s_id;
1549 nacl->nport_id = key;
1550 }
1551
1552 sess->conf_compl_supported = conf_compl_supported;
1553 }
1554
1555 /*
1556 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1557 */
1558 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1559 .handle_cmd = tcm_qla2xxx_handle_cmd,
1560 .handle_data = tcm_qla2xxx_handle_data,
1561 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1562 .handle_tmr = tcm_qla2xxx_handle_tmr,
1563 .free_cmd = tcm_qla2xxx_free_cmd,
1564 .free_mcmd = tcm_qla2xxx_free_mcmd,
1565 .free_session = tcm_qla2xxx_free_session,
1566 .update_sess = tcm_qla2xxx_update_sess,
1567 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1568 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1569 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1570 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1571 .put_sess = tcm_qla2xxx_put_sess,
1572 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1573 };
1574
1575 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1576 {
1577 int rc;
1578
1579 rc = btree_init32(&lport->lport_fcport_map);
1580 if (rc) {
1581 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1582 return rc;
1583 }
1584
1585 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1586 65536);
1587 if (!lport->lport_loopid_map) {
1588 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1589 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1590 btree_destroy32(&lport->lport_fcport_map);
1591 return -ENOMEM;
1592 }
1593 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1594 * 65536);
1595 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1596 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1597 return 0;
1598 }
1599
1600 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1601 void *target_lport_ptr,
1602 u64 npiv_wwpn, u64 npiv_wwnn)
1603 {
1604 struct qla_hw_data *ha = vha->hw;
1605 struct tcm_qla2xxx_lport *lport =
1606 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1607 /*
1608 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1609 */
1610 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1611 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1612 lport->qla_vha = vha;
1613
1614 return 0;
1615 }
1616
1617 static struct se_wwn *tcm_qla2xxx_make_lport(
1618 struct target_fabric_configfs *tf,
1619 struct config_group *group,
1620 const char *name)
1621 {
1622 struct tcm_qla2xxx_lport *lport;
1623 u64 wwpn;
1624 int ret = -ENODEV;
1625
1626 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1627 return ERR_PTR(-EINVAL);
1628
1629 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1630 if (!lport) {
1631 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1632 return ERR_PTR(-ENOMEM);
1633 }
1634 lport->lport_wwpn = wwpn;
1635 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1636 wwpn);
1637 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1638
1639 ret = tcm_qla2xxx_init_lport(lport);
1640 if (ret != 0)
1641 goto out;
1642
1643 ret = qlt_lport_register(lport, wwpn, 0, 0,
1644 tcm_qla2xxx_lport_register_cb);
1645 if (ret != 0)
1646 goto out_lport;
1647
1648 return &lport->lport_wwn;
1649 out_lport:
1650 vfree(lport->lport_loopid_map);
1651 btree_destroy32(&lport->lport_fcport_map);
1652 out:
1653 kfree(lport);
1654 return ERR_PTR(ret);
1655 }
1656
1657 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1658 {
1659 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1660 struct tcm_qla2xxx_lport, lport_wwn);
1661 struct scsi_qla_host *vha = lport->qla_vha;
1662 struct se_node_acl *node;
1663 u32 key = 0;
1664
1665 /*
1666 * Call into qla2x_target.c LLD logic to complete the
1667 * shutdown of struct qla_tgt after the call to
1668 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1669 */
1670 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1671 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1672
1673 qlt_lport_deregister(vha);
1674
1675 vfree(lport->lport_loopid_map);
1676 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1677 btree_remove32(&lport->lport_fcport_map, key);
1678 btree_destroy32(&lport->lport_fcport_map);
1679 kfree(lport);
1680 }
1681
1682 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1683 void *target_lport_ptr,
1684 u64 npiv_wwpn, u64 npiv_wwnn)
1685 {
1686 struct fc_vport *vport;
1687 struct Scsi_Host *sh = base_vha->host;
1688 struct scsi_qla_host *npiv_vha;
1689 struct tcm_qla2xxx_lport *lport =
1690 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1691 struct tcm_qla2xxx_lport *base_lport =
1692 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1693 struct tcm_qla2xxx_tpg *base_tpg;
1694 struct fc_vport_identifiers vport_id;
1695
1696 if (!qla_tgt_mode_enabled(base_vha)) {
1697 pr_err("qla2xxx base_vha not enabled for target mode\n");
1698 return -EPERM;
1699 }
1700
1701 if (!base_lport || !base_lport->tpg_1 ||
1702 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1703 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1704 return -EPERM;
1705 }
1706 base_tpg = base_lport->tpg_1;
1707
1708 memset(&vport_id, 0, sizeof(vport_id));
1709 vport_id.port_name = npiv_wwpn;
1710 vport_id.node_name = npiv_wwnn;
1711 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1712 vport_id.vport_type = FC_PORTTYPE_NPIV;
1713 vport_id.disable = false;
1714
1715 vport = fc_vport_create(sh, 0, &vport_id);
1716 if (!vport) {
1717 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1718 return -ENODEV;
1719 }
1720 /*
1721 * Setup local pointer to NPIV vhba + target_lport_ptr
1722 */
1723 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1724 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1725 lport->qla_vha = npiv_vha;
1726 scsi_host_get(npiv_vha->host);
1727 return 0;
1728 }
1729
1730
1731 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1732 struct target_fabric_configfs *tf,
1733 struct config_group *group,
1734 const char *name)
1735 {
1736 struct tcm_qla2xxx_lport *lport;
1737 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1738 char *p, tmp[128];
1739 int ret;
1740
1741 snprintf(tmp, 128, "%s", name);
1742
1743 p = strchr(tmp, '@');
1744 if (!p) {
1745 pr_err("Unable to locate NPIV '@' seperator\n");
1746 return ERR_PTR(-EINVAL);
1747 }
1748 *p++ = '\0';
1749
1750 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1751 return ERR_PTR(-EINVAL);
1752
1753 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1754 &npiv_wwpn, &npiv_wwnn) < 0)
1755 return ERR_PTR(-EINVAL);
1756
1757 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1758 if (!lport) {
1759 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1760 return ERR_PTR(-ENOMEM);
1761 }
1762 lport->lport_npiv_wwpn = npiv_wwpn;
1763 lport->lport_npiv_wwnn = npiv_wwnn;
1764 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1765
1766 ret = tcm_qla2xxx_init_lport(lport);
1767 if (ret != 0)
1768 goto out;
1769
1770 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1771 tcm_qla2xxx_lport_register_npiv_cb);
1772 if (ret != 0)
1773 goto out_lport;
1774
1775 return &lport->lport_wwn;
1776 out_lport:
1777 vfree(lport->lport_loopid_map);
1778 btree_destroy32(&lport->lport_fcport_map);
1779 out:
1780 kfree(lport);
1781 return ERR_PTR(ret);
1782 }
1783
1784 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1785 {
1786 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1787 struct tcm_qla2xxx_lport, lport_wwn);
1788 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1789 struct qla_hw_data *ha = npiv_vha->hw;
1790 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1791
1792 scsi_host_put(npiv_vha->host);
1793 /*
1794 * Notify libfc that we want to release the vha->fc_vport
1795 */
1796 fc_vport_terminate(npiv_vha->fc_vport);
1797 scsi_host_put(base_vha->host);
1798 kfree(lport);
1799 }
1800
1801
1802 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1803 struct target_fabric_configfs *tf,
1804 char *page)
1805 {
1806 return sprintf(page,
1807 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1808 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1809 utsname()->machine);
1810 }
1811
1812 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1813
1814 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1815 &tcm_qla2xxx_wwn_version.attr,
1816 NULL,
1817 };
1818
1819 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1820 .module = THIS_MODULE,
1821 .name = "qla2xxx",
1822 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1823 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1824 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1825 .tpg_get_tag = tcm_qla2xxx_get_tag,
1826 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1827 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1828 .tpg_check_demo_mode_write_protect =
1829 tcm_qla2xxx_check_demo_write_protect,
1830 .tpg_check_prod_mode_write_protect =
1831 tcm_qla2xxx_check_prod_write_protect,
1832 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1833 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1834 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1835 .check_stop_free = tcm_qla2xxx_check_stop_free,
1836 .release_cmd = tcm_qla2xxx_release_cmd,
1837 .shutdown_session = tcm_qla2xxx_shutdown_session,
1838 .close_session = tcm_qla2xxx_close_session,
1839 .sess_get_index = tcm_qla2xxx_sess_get_index,
1840 .sess_get_initiator_sid = NULL,
1841 .write_pending = tcm_qla2xxx_write_pending,
1842 .write_pending_status = tcm_qla2xxx_write_pending_status,
1843 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1844 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1845 .queue_data_in = tcm_qla2xxx_queue_data_in,
1846 .queue_status = tcm_qla2xxx_queue_status,
1847 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1848 .aborted_task = tcm_qla2xxx_aborted_task,
1849 /*
1850 * Setup function pointers for generic logic in
1851 * target_core_fabric_configfs.c
1852 */
1853 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1854 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1855 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1856 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1857 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1858
1859 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1860 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1861 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1862 };
1863
1864 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1865 .module = THIS_MODULE,
1866 .name = "qla2xxx_npiv",
1867 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1868 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1869 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1870 .tpg_get_tag = tcm_qla2xxx_get_tag,
1871 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1872 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1873 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1874 .tpg_check_prod_mode_write_protect =
1875 tcm_qla2xxx_check_prod_write_protect,
1876 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1877 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1878 .check_stop_free = tcm_qla2xxx_check_stop_free,
1879 .release_cmd = tcm_qla2xxx_release_cmd,
1880 .shutdown_session = tcm_qla2xxx_shutdown_session,
1881 .close_session = tcm_qla2xxx_close_session,
1882 .sess_get_index = tcm_qla2xxx_sess_get_index,
1883 .sess_get_initiator_sid = NULL,
1884 .write_pending = tcm_qla2xxx_write_pending,
1885 .write_pending_status = tcm_qla2xxx_write_pending_status,
1886 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1887 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1888 .queue_data_in = tcm_qla2xxx_queue_data_in,
1889 .queue_status = tcm_qla2xxx_queue_status,
1890 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1891 .aborted_task = tcm_qla2xxx_aborted_task,
1892 /*
1893 * Setup function pointers for generic logic in
1894 * target_core_fabric_configfs.c
1895 */
1896 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1897 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1898 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1899 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1900 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1901
1902 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1903 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1904 };
1905
1906 static int tcm_qla2xxx_register_configfs(void)
1907 {
1908 int ret;
1909
1910 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1911 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1912 utsname()->machine);
1913
1914 ret = target_register_template(&tcm_qla2xxx_ops);
1915 if (ret)
1916 return ret;
1917
1918 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1919 if (ret)
1920 goto out_fabric;
1921
1922 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1923 WQ_MEM_RECLAIM, 0);
1924 if (!tcm_qla2xxx_free_wq) {
1925 ret = -ENOMEM;
1926 goto out_fabric_npiv;
1927 }
1928
1929 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1930 if (!tcm_qla2xxx_cmd_wq) {
1931 ret = -ENOMEM;
1932 goto out_free_wq;
1933 }
1934
1935 return 0;
1936
1937 out_free_wq:
1938 destroy_workqueue(tcm_qla2xxx_free_wq);
1939 out_fabric_npiv:
1940 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1941 out_fabric:
1942 target_unregister_template(&tcm_qla2xxx_ops);
1943 return ret;
1944 }
1945
1946 static void tcm_qla2xxx_deregister_configfs(void)
1947 {
1948 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1949 destroy_workqueue(tcm_qla2xxx_free_wq);
1950
1951 target_unregister_template(&tcm_qla2xxx_ops);
1952 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1953 }
1954
1955 static int __init tcm_qla2xxx_init(void)
1956 {
1957 int ret;
1958
1959 ret = tcm_qla2xxx_register_configfs();
1960 if (ret < 0)
1961 return ret;
1962
1963 return 0;
1964 }
1965
1966 static void __exit tcm_qla2xxx_exit(void)
1967 {
1968 tcm_qla2xxx_deregister_configfs();
1969 }
1970
1971 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1972 MODULE_LICENSE("GPL");
1973 module_init(tcm_qla2xxx_init);
1974 module_exit(tcm_qla2xxx_exit);
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