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[mirror_ubuntu-zesty-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/init.h>
31 #include <linux/list.h>
32 #include <linux/slab.h>
33 #include <linux/kthread.h>
34 #include <linux/types.h>
35 #include <linux/string.h>
36 #include <linux/configfs.h>
37 #include <linux/ctype.h>
38 #include <asm/unaligned.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_fabric.h>
45 #include <target/target_core_fabric_configfs.h>
46 #include <target/target_core_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 static const struct target_core_fabric_ops tcm_qla2xxx_ops;
57 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops;
58
59 /*
60 * Parse WWN.
61 * If strict, we require lower-case hex and colon separators to be sure
62 * the name is the same as what would be generated by ft_format_wwn()
63 * so the name and wwn are mapped one-to-one.
64 */
65 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
66 {
67 const char *cp;
68 char c;
69 u32 nibble;
70 u32 byte = 0;
71 u32 pos = 0;
72 u32 err;
73
74 *wwn = 0;
75 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
76 c = *cp;
77 if (c == '\n' && cp[1] == '\0')
78 continue;
79 if (strict && pos++ == 2 && byte++ < 7) {
80 pos = 0;
81 if (c == ':')
82 continue;
83 err = 1;
84 goto fail;
85 }
86 if (c == '\0') {
87 err = 2;
88 if (strict && byte != 8)
89 goto fail;
90 return cp - name;
91 }
92 err = 3;
93 if (isdigit(c))
94 nibble = c - '0';
95 else if (isxdigit(c) && (islower(c) || !strict))
96 nibble = tolower(c) - 'a' + 10;
97 else
98 goto fail;
99 *wwn = (*wwn << 4) | nibble;
100 }
101 err = 4;
102 fail:
103 pr_debug("err %u len %zu pos %u byte %u\n",
104 err, cp - name, pos, byte);
105 return -1;
106 }
107
108 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
109 {
110 u8 b[8];
111
112 put_unaligned_be64(wwn, b);
113 return snprintf(buf, len,
114 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
115 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
116 }
117
118 static char *tcm_qla2xxx_get_fabric_name(void)
119 {
120 return "qla2xxx";
121 }
122
123 /*
124 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
125 */
126 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
127 {
128 unsigned int i, j;
129 u8 wwn[8];
130
131 memset(wwn, 0, sizeof(wwn));
132
133 /* Validate and store the new name */
134 for (i = 0, j = 0; i < 16; i++) {
135 int value;
136
137 value = hex_to_bin(*ns++);
138 if (value >= 0)
139 j = (j << 4) | value;
140 else
141 return -EINVAL;
142
143 if (i % 2) {
144 wwn[i/2] = j & 0xff;
145 j = 0;
146 }
147 }
148
149 *nm = wwn_to_u64(wwn);
150 return 0;
151 }
152
153 /*
154 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
155 * store_fc_host_vport_create()
156 */
157 static int tcm_qla2xxx_npiv_parse_wwn(
158 const char *name,
159 size_t count,
160 u64 *wwpn,
161 u64 *wwnn)
162 {
163 unsigned int cnt = count;
164 int rc;
165
166 *wwpn = 0;
167 *wwnn = 0;
168
169 /* count may include a LF at end of string */
170 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
171 cnt--;
172
173 /* validate we have enough characters for WWPN */
174 if ((cnt != (16+1+16)) || (name[16] != ':'))
175 return -EINVAL;
176
177 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
178 if (rc != 0)
179 return rc;
180
181 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
182 if (rc != 0)
183 return rc;
184
185 return 0;
186 }
187
188 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
189 {
190 return "qla2xxx_npiv";
191 }
192
193 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
194 {
195 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
196 struct tcm_qla2xxx_tpg, se_tpg);
197 struct tcm_qla2xxx_lport *lport = tpg->lport;
198 u8 proto_id;
199
200 switch (lport->lport_proto_id) {
201 case SCSI_PROTOCOL_FCP:
202 default:
203 proto_id = fc_get_fabric_proto_ident(se_tpg);
204 break;
205 }
206
207 return proto_id;
208 }
209
210 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
211 {
212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
213 struct tcm_qla2xxx_tpg, se_tpg);
214 struct tcm_qla2xxx_lport *lport = tpg->lport;
215
216 return lport->lport_naa_name;
217 }
218
219 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
220 {
221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
222 struct tcm_qla2xxx_tpg, se_tpg);
223 return tpg->lport_tpgt;
224 }
225
226 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
227 {
228 return 1;
229 }
230
231 static u32 tcm_qla2xxx_get_pr_transport_id(
232 struct se_portal_group *se_tpg,
233 struct se_node_acl *se_nacl,
234 struct t10_pr_registration *pr_reg,
235 int *format_code,
236 unsigned char *buf)
237 {
238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
239 struct tcm_qla2xxx_tpg, se_tpg);
240 struct tcm_qla2xxx_lport *lport = tpg->lport;
241 int ret = 0;
242
243 switch (lport->lport_proto_id) {
244 case SCSI_PROTOCOL_FCP:
245 default:
246 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
247 format_code, buf);
248 break;
249 }
250
251 return ret;
252 }
253
254 static u32 tcm_qla2xxx_get_pr_transport_id_len(
255 struct se_portal_group *se_tpg,
256 struct se_node_acl *se_nacl,
257 struct t10_pr_registration *pr_reg,
258 int *format_code)
259 {
260 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
261 struct tcm_qla2xxx_tpg, se_tpg);
262 struct tcm_qla2xxx_lport *lport = tpg->lport;
263 int ret = 0;
264
265 switch (lport->lport_proto_id) {
266 case SCSI_PROTOCOL_FCP:
267 default:
268 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
269 format_code);
270 break;
271 }
272
273 return ret;
274 }
275
276 static char *tcm_qla2xxx_parse_pr_out_transport_id(
277 struct se_portal_group *se_tpg,
278 const char *buf,
279 u32 *out_tid_len,
280 char **port_nexus_ptr)
281 {
282 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
283 struct tcm_qla2xxx_tpg, se_tpg);
284 struct tcm_qla2xxx_lport *lport = tpg->lport;
285 char *tid = NULL;
286
287 switch (lport->lport_proto_id) {
288 case SCSI_PROTOCOL_FCP:
289 default:
290 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
291 port_nexus_ptr);
292 break;
293 }
294
295 return tid;
296 }
297
298 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
299 {
300 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
301 struct tcm_qla2xxx_tpg, se_tpg);
302
303 return tpg->tpg_attrib.generate_node_acls;
304 }
305
306 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
307 {
308 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
309 struct tcm_qla2xxx_tpg, se_tpg);
310
311 return tpg->tpg_attrib.cache_dynamic_acls;
312 }
313
314 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
315 {
316 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
317 struct tcm_qla2xxx_tpg, se_tpg);
318
319 return tpg->tpg_attrib.demo_mode_write_protect;
320 }
321
322 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
323 {
324 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
325 struct tcm_qla2xxx_tpg, se_tpg);
326
327 return tpg->tpg_attrib.prod_mode_write_protect;
328 }
329
330 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
331 {
332 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
333 struct tcm_qla2xxx_tpg, se_tpg);
334
335 return tpg->tpg_attrib.demo_mode_login_only;
336 }
337
338 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
339 {
340 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
341 struct tcm_qla2xxx_tpg, se_tpg);
342
343 return tpg->tpg_attrib.fabric_prot_type;
344 }
345
346 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
347 struct se_portal_group *se_tpg)
348 {
349 struct tcm_qla2xxx_nacl *nacl;
350
351 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
352 if (!nacl) {
353 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
354 return NULL;
355 }
356
357 return &nacl->se_node_acl;
358 }
359
360 static void tcm_qla2xxx_release_fabric_acl(
361 struct se_portal_group *se_tpg,
362 struct se_node_acl *se_nacl)
363 {
364 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
365 struct tcm_qla2xxx_nacl, se_node_acl);
366 kfree(nacl);
367 }
368
369 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
370 {
371 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
372 struct tcm_qla2xxx_tpg, se_tpg);
373
374 return tpg->lport_tpgt;
375 }
376
377 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
378 {
379 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
380 struct qla_tgt_mgmt_cmd, free_work);
381
382 transport_generic_free_cmd(&mcmd->se_cmd, 0);
383 }
384
385 /*
386 * Called from qla_target_template->free_mcmd(), and will call
387 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
388 * release callback. qla_hw_data->hardware_lock is expected to be held
389 */
390 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
391 {
392 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
393 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
394 }
395
396 static void tcm_qla2xxx_complete_free(struct work_struct *work)
397 {
398 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
399
400 cmd->cmd_in_wq = 0;
401
402 WARN_ON(cmd->cmd_flags & BIT_16);
403
404 cmd->cmd_flags |= BIT_16;
405 transport_generic_free_cmd(&cmd->se_cmd, 0);
406 }
407
408 /*
409 * Called from qla_target_template->free_cmd(), and will call
410 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
411 * release callback. qla_hw_data->hardware_lock is expected to be held
412 */
413 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
414 {
415 cmd->cmd_in_wq = 1;
416 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
417 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
418 }
419
420 /*
421 * Called from struct target_core_fabric_ops->check_stop_free() context
422 */
423 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
424 {
425 struct qla_tgt_cmd *cmd;
426
427 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
428 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
429 cmd->cmd_flags |= BIT_14;
430 }
431
432 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
433 }
434
435 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
436 * fabric descriptor @se_cmd command to release
437 */
438 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
439 {
440 struct qla_tgt_cmd *cmd;
441
442 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
443 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
444 struct qla_tgt_mgmt_cmd, se_cmd);
445 qlt_free_mcmd(mcmd);
446 return;
447 }
448
449 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
450 qlt_free_cmd(cmd);
451 }
452
453 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
454 {
455 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
456 struct scsi_qla_host *vha;
457 unsigned long flags;
458
459 BUG_ON(!sess);
460 vha = sess->vha;
461
462 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
463 target_sess_cmd_list_set_waiting(se_sess);
464 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
465
466 return 1;
467 }
468
469 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
470 {
471 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
472 struct scsi_qla_host *vha;
473 unsigned long flags;
474
475 BUG_ON(!sess);
476 vha = sess->vha;
477
478 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
479 qlt_unreg_sess(sess);
480 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
481 }
482
483 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
484 {
485 return 0;
486 }
487
488 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
489 {
490 struct qla_tgt_cmd *cmd = container_of(se_cmd,
491 struct qla_tgt_cmd, se_cmd);
492
493 cmd->bufflen = se_cmd->data_length;
494 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
495
496 cmd->sg_cnt = se_cmd->t_data_nents;
497 cmd->sg = se_cmd->t_data_sg;
498
499 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
500 cmd->prot_sg = se_cmd->t_prot_sg;
501 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
502 se_cmd->pi_err = 0;
503
504 /*
505 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
506 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
507 */
508 return qlt_rdy_to_xfer(cmd);
509 }
510
511 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
512 {
513 unsigned long flags;
514 /*
515 * Check for WRITE_PENDING status to determine if we need to wait for
516 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
517 */
518 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
519 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
520 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
521 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
522 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
523 3000);
524 return 0;
525 }
526 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
527
528 return 0;
529 }
530
531 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
532 {
533 return;
534 }
535
536 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
537 {
538 struct qla_tgt_cmd *cmd;
539
540 /* check for task mgmt cmd */
541 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
542 return 0xffffffff;
543
544 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
545
546 return cmd->tag;
547 }
548
549 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
550 {
551 return 0;
552 }
553
554 /*
555 * Called from process context in qla_target.c:qlt_do_work() code
556 */
557 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
558 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
559 int data_dir, int bidi)
560 {
561 struct se_cmd *se_cmd = &cmd->se_cmd;
562 struct se_session *se_sess;
563 struct qla_tgt_sess *sess;
564 int flags = TARGET_SCF_ACK_KREF;
565
566 if (bidi)
567 flags |= TARGET_SCF_BIDI_OP;
568
569 sess = cmd->sess;
570 if (!sess) {
571 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
572 return -EINVAL;
573 }
574
575 se_sess = sess->se_sess;
576 if (!se_sess) {
577 pr_err("Unable to locate active struct se_session\n");
578 return -EINVAL;
579 }
580
581 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
582 cmd->unpacked_lun, data_length, fcp_task_attr,
583 data_dir, flags);
584 }
585
586 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
587 {
588 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
589
590 /*
591 * Ensure that the complete FCP WRITE payload has been received.
592 * Otherwise return an exception via CHECK_CONDITION status.
593 */
594 cmd->cmd_in_wq = 0;
595 cmd->cmd_flags |= BIT_11;
596 if (!cmd->write_data_transferred) {
597 /*
598 * Check if se_cmd has already been aborted via LUN_RESET, and
599 * waiting upon completion in tcm_qla2xxx_write_pending_status()
600 */
601 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
602 complete(&cmd->se_cmd.t_transport_stop_comp);
603 return;
604 }
605
606 if (cmd->se_cmd.pi_err)
607 transport_generic_request_failure(&cmd->se_cmd,
608 cmd->se_cmd.pi_err);
609 else
610 transport_generic_request_failure(&cmd->se_cmd,
611 TCM_CHECK_CONDITION_ABORT_CMD);
612
613 return;
614 }
615
616 return target_execute_cmd(&cmd->se_cmd);
617 }
618
619 /*
620 * Called from qla_target.c:qlt_do_ctio_completion()
621 */
622 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
623 {
624 cmd->cmd_flags |= BIT_10;
625 cmd->cmd_in_wq = 1;
626 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
627 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
628 }
629
630 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
631 {
632 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
633
634 /* take an extra kref to prevent cmd free too early.
635 * need to wait for SCSI status/check condition to
636 * finish responding generate by transport_generic_request_failure.
637 */
638 kref_get(&cmd->se_cmd.cmd_kref);
639 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
640 }
641
642 /*
643 * Called from qla_target.c:qlt_do_ctio_completion()
644 */
645 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
646 {
647 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
648 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
649 }
650
651 /*
652 * Called from qla_target.c:qlt_issue_task_mgmt()
653 */
654 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
655 uint8_t tmr_func, uint32_t tag)
656 {
657 struct qla_tgt_sess *sess = mcmd->sess;
658 struct se_cmd *se_cmd = &mcmd->se_cmd;
659
660 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
661 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
662 }
663
664 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
665 {
666 struct qla_tgt_cmd *cmd = container_of(se_cmd,
667 struct qla_tgt_cmd, se_cmd);
668
669 cmd->cmd_flags |= BIT_4;
670 cmd->bufflen = se_cmd->data_length;
671 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
672 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
673
674 cmd->sg_cnt = se_cmd->t_data_nents;
675 cmd->sg = se_cmd->t_data_sg;
676 cmd->offset = 0;
677 cmd->cmd_flags |= BIT_3;
678
679 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
680 cmd->prot_sg = se_cmd->t_prot_sg;
681 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
682 se_cmd->pi_err = 0;
683
684 /*
685 * Now queue completed DATA_IN the qla2xxx LLD and response ring
686 */
687 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
688 se_cmd->scsi_status);
689 }
690
691 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
692 {
693 struct qla_tgt_cmd *cmd = container_of(se_cmd,
694 struct qla_tgt_cmd, se_cmd);
695 int xmit_type = QLA_TGT_XMIT_STATUS;
696
697 cmd->bufflen = se_cmd->data_length;
698 cmd->sg = NULL;
699 cmd->sg_cnt = 0;
700 cmd->offset = 0;
701 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
702 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
703 if (cmd->cmd_flags & BIT_5) {
704 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
705 dump_stack();
706 }
707 cmd->cmd_flags |= BIT_5;
708
709 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
710 /*
711 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
712 * for qla_tgt_xmit_response LLD code
713 */
714 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
715 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
716 se_cmd->residual_count = 0;
717 }
718 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
719 se_cmd->residual_count += se_cmd->data_length;
720
721 cmd->bufflen = 0;
722 }
723 /*
724 * Now queue status response to qla2xxx LLD code and response ring
725 */
726 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
727 }
728
729 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
730 {
731 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
732 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
733 struct qla_tgt_mgmt_cmd, se_cmd);
734
735 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
736 mcmd, se_tmr->function, se_tmr->response);
737 /*
738 * Do translation between TCM TM response codes and
739 * QLA2xxx FC TM response codes.
740 */
741 switch (se_tmr->response) {
742 case TMR_FUNCTION_COMPLETE:
743 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
744 break;
745 case TMR_TASK_DOES_NOT_EXIST:
746 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
747 break;
748 case TMR_FUNCTION_REJECTED:
749 mcmd->fc_tm_rsp = FC_TM_REJECT;
750 break;
751 case TMR_LUN_DOES_NOT_EXIST:
752 default:
753 mcmd->fc_tm_rsp = FC_TM_FAILED;
754 break;
755 }
756 /*
757 * Queue the TM response to QLA2xxx LLD to build a
758 * CTIO response packet.
759 */
760 qlt_xmit_tm_rsp(mcmd);
761 }
762
763 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
764 {
765 struct qla_tgt_cmd *cmd = container_of(se_cmd,
766 struct qla_tgt_cmd, se_cmd);
767 struct scsi_qla_host *vha = cmd->vha;
768 struct qla_hw_data *ha = vha->hw;
769
770 if (!cmd->sg_mapped)
771 return;
772
773 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
774 cmd->sg_mapped = 0;
775 }
776
777 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
778 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
779 /*
780 * Expected to be called with struct qla_hw_data->hardware_lock held
781 */
782 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
783 {
784 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
785 struct se_portal_group *se_tpg = se_nacl->se_tpg;
786 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
787 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
788 struct tcm_qla2xxx_lport, lport_wwn);
789 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
790 struct tcm_qla2xxx_nacl, se_node_acl);
791 void *node;
792
793 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
794
795 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
796 if (WARN_ON(node && (node != se_nacl))) {
797 /*
798 * The nacl no longer matches what we think it should be.
799 * Most likely a new dynamic acl has been added while
800 * someone dropped the hardware lock. It clearly is a
801 * bug elsewhere, but this bit can't make things worse.
802 */
803 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
804 node, GFP_ATOMIC);
805 }
806
807 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
808 se_nacl, nacl->nport_wwnn, nacl->nport_id);
809 /*
810 * Now clear the se_nacl and session pointers from our HW lport lookup
811 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
812 *
813 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
814 * target_wait_for_sess_cmds() before the session waits for outstanding
815 * I/O to complete, to avoid a race between session shutdown execution
816 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
817 */
818 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
819 }
820
821 static void tcm_qla2xxx_release_session(struct kref *kref)
822 {
823 struct se_session *se_sess = container_of(kref,
824 struct se_session, sess_kref);
825
826 qlt_unreg_sess(se_sess->fabric_sess_ptr);
827 }
828
829 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
830 {
831 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
832 struct qla_hw_data *ha = sess->vha->hw;
833 unsigned long flags;
834
835 spin_lock_irqsave(&ha->hardware_lock, flags);
836 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
837 spin_unlock_irqrestore(&ha->hardware_lock, flags);
838 }
839
840 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
841 {
842 if (!sess)
843 return;
844
845 assert_spin_locked(&sess->vha->hw->hardware_lock);
846 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
847 }
848
849 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
850 {
851 assert_spin_locked(&sess->vha->hw->hardware_lock);
852 target_sess_cmd_list_set_waiting(sess->se_sess);
853 }
854
855 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
856 struct se_portal_group *se_tpg,
857 struct config_group *group,
858 const char *name)
859 {
860 struct se_node_acl *se_nacl, *se_nacl_new;
861 struct tcm_qla2xxx_nacl *nacl;
862 u64 wwnn;
863 u32 qla2xxx_nexus_depth;
864
865 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
866 return ERR_PTR(-EINVAL);
867
868 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
869 if (!se_nacl_new)
870 return ERR_PTR(-ENOMEM);
871 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
872 qla2xxx_nexus_depth = 1;
873
874 /*
875 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
876 * when converting a NodeACL from demo mode -> explict
877 */
878 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
879 name, qla2xxx_nexus_depth);
880 if (IS_ERR(se_nacl)) {
881 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
882 return se_nacl;
883 }
884 /*
885 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
886 */
887 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
888 nacl->nport_wwnn = wwnn;
889 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
890
891 return se_nacl;
892 }
893
894 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
895 {
896 struct se_portal_group *se_tpg = se_acl->se_tpg;
897 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
898 struct tcm_qla2xxx_nacl, se_node_acl);
899
900 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
901 kfree(nacl);
902 }
903
904 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
905
906 #define DEF_QLA_TPG_ATTRIB(name) \
907 \
908 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
909 struct se_portal_group *se_tpg, \
910 char *page) \
911 { \
912 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
913 struct tcm_qla2xxx_tpg, se_tpg); \
914 \
915 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
916 } \
917 \
918 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
919 struct se_portal_group *se_tpg, \
920 const char *page, \
921 size_t count) \
922 { \
923 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
924 struct tcm_qla2xxx_tpg, se_tpg); \
925 unsigned long val; \
926 int ret; \
927 \
928 ret = kstrtoul(page, 0, &val); \
929 if (ret < 0) { \
930 pr_err("kstrtoul() failed with" \
931 " ret: %d\n", ret); \
932 return -EINVAL; \
933 } \
934 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
935 \
936 return (!ret) ? count : -EINVAL; \
937 }
938
939 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
940 \
941 static int tcm_qla2xxx_set_attrib_##_name( \
942 struct tcm_qla2xxx_tpg *tpg, \
943 unsigned long val) \
944 { \
945 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
946 \
947 if ((val != 0) && (val != 1)) { \
948 pr_err("Illegal boolean value %lu\n", val); \
949 return -EINVAL; \
950 } \
951 \
952 a->_name = val; \
953 return 0; \
954 }
955
956 #define QLA_TPG_ATTR(_name, _mode) \
957 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
958
959 /*
960 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
961 */
962 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
963 DEF_QLA_TPG_ATTRIB(generate_node_acls);
964 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
965
966 /*
967 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
968 */
969 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
970 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
971 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
972
973 /*
974 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
975 */
976 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
977 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
978 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
979
980 /*
981 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
982 */
983 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
984 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
985 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
986
987 /*
988 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
989 */
990 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
991 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
992 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
993
994 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
995 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
996 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
997 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
998 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
999 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
1000 NULL,
1001 };
1002
1003 /* End items for tcm_qla2xxx_tpg_attrib_cit */
1004
1005 static ssize_t tcm_qla2xxx_tpg_show_enable(
1006 struct se_portal_group *se_tpg,
1007 char *page)
1008 {
1009 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1010 struct tcm_qla2xxx_tpg, se_tpg);
1011
1012 return snprintf(page, PAGE_SIZE, "%d\n",
1013 atomic_read(&tpg->lport_tpg_enabled));
1014 }
1015
1016 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
1017 {
1018 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1019 struct tcm_qla2xxx_tpg, tpg_base_work);
1020 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1021 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1022
1023 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
1024 atomic_set(&base_tpg->lport_tpg_enabled, 1);
1025 qlt_enable_vha(base_vha);
1026 }
1027 complete(&base_tpg->tpg_base_comp);
1028 }
1029
1030 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
1031 {
1032 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1033 struct tcm_qla2xxx_tpg, tpg_base_work);
1034 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1035 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1036
1037 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
1038 atomic_set(&base_tpg->lport_tpg_enabled, 0);
1039 target_undepend_item(&se_tpg->tpg_group.cg_item);
1040 }
1041 complete(&base_tpg->tpg_base_comp);
1042 }
1043
1044 static ssize_t tcm_qla2xxx_tpg_store_enable(
1045 struct se_portal_group *se_tpg,
1046 const char *page,
1047 size_t count)
1048 {
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 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
1068 } else {
1069 if (!atomic_read(&tpg->lport_tpg_enabled))
1070 return count;
1071
1072 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
1073 }
1074 init_completion(&tpg->tpg_base_comp);
1075 schedule_work(&tpg->tpg_base_work);
1076 wait_for_completion(&tpg->tpg_base_comp);
1077
1078 if (op) {
1079 if (!atomic_read(&tpg->lport_tpg_enabled))
1080 return -ENODEV;
1081 } else {
1082 if (atomic_read(&tpg->lport_tpg_enabled))
1083 return -EPERM;
1084 }
1085 return count;
1086 }
1087
1088 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1089
1090 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
1091 struct se_portal_group *se_tpg,
1092 char *page)
1093 {
1094 return target_show_dynamic_sessions(se_tpg, page);
1095 }
1096
1097 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
1098
1099 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
1100 struct se_portal_group *se_tpg,
1101 const char *page,
1102 size_t count)
1103 {
1104 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1105 struct tcm_qla2xxx_tpg, se_tpg);
1106 unsigned long val;
1107 int ret = kstrtoul(page, 0, &val);
1108
1109 if (ret) {
1110 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
1111 return ret;
1112 }
1113 if (val != 0 && val != 1 && val != 3) {
1114 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
1115 return -EINVAL;
1116 }
1117 tpg->tpg_attrib.fabric_prot_type = val;
1118
1119 return count;
1120 }
1121
1122 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
1123 struct se_portal_group *se_tpg,
1124 char *page)
1125 {
1126 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1127 struct tcm_qla2xxx_tpg, se_tpg);
1128
1129 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1130 }
1131 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
1132
1133 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1134 &tcm_qla2xxx_tpg_enable.attr,
1135 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
1136 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
1137 NULL,
1138 };
1139
1140 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1141 struct se_wwn *wwn,
1142 struct config_group *group,
1143 const char *name)
1144 {
1145 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1146 struct tcm_qla2xxx_lport, lport_wwn);
1147 struct tcm_qla2xxx_tpg *tpg;
1148 unsigned long tpgt;
1149 int ret;
1150
1151 if (strstr(name, "tpgt_") != name)
1152 return ERR_PTR(-EINVAL);
1153 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1154 return ERR_PTR(-EINVAL);
1155
1156 if ((tpgt != 1)) {
1157 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1158 return ERR_PTR(-ENOSYS);
1159 }
1160
1161 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1162 if (!tpg) {
1163 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1164 return ERR_PTR(-ENOMEM);
1165 }
1166 tpg->lport = lport;
1167 tpg->lport_tpgt = tpgt;
1168 /*
1169 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1170 * NodeACLs
1171 */
1172 tpg->tpg_attrib.generate_node_acls = 1;
1173 tpg->tpg_attrib.demo_mode_write_protect = 1;
1174 tpg->tpg_attrib.cache_dynamic_acls = 1;
1175 tpg->tpg_attrib.demo_mode_login_only = 1;
1176
1177 ret = core_tpg_register(&tcm_qla2xxx_ops, wwn,
1178 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1179 if (ret < 0) {
1180 kfree(tpg);
1181 return NULL;
1182 }
1183
1184 lport->tpg_1 = tpg;
1185
1186 return &tpg->se_tpg;
1187 }
1188
1189 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1190 {
1191 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1192 struct tcm_qla2xxx_tpg, se_tpg);
1193 struct tcm_qla2xxx_lport *lport = tpg->lport;
1194 struct scsi_qla_host *vha = lport->qla_vha;
1195 /*
1196 * Call into qla2x_target.c LLD logic to shutdown the active
1197 * FC Nexuses and disable target mode operation for this qla_hw_data
1198 */
1199 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1200 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1201
1202 core_tpg_deregister(se_tpg);
1203 /*
1204 * Clear local TPG=1 pointer for non NPIV mode.
1205 */
1206 lport->tpg_1 = NULL;
1207 kfree(tpg);
1208 }
1209
1210 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1211 struct se_portal_group *se_tpg,
1212 char *page)
1213 {
1214 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1215 }
1216
1217 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1218 struct se_portal_group *se_tpg,
1219 const char *page,
1220 size_t count)
1221 {
1222 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1223 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1224 struct tcm_qla2xxx_lport, lport_wwn);
1225 struct scsi_qla_host *vha = lport->qla_vha;
1226 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1227 struct tcm_qla2xxx_tpg, se_tpg);
1228 unsigned long op;
1229 int rc;
1230
1231 rc = kstrtoul(page, 0, &op);
1232 if (rc < 0) {
1233 pr_err("kstrtoul() returned %d\n", rc);
1234 return -EINVAL;
1235 }
1236 if ((op != 1) && (op != 0)) {
1237 pr_err("Illegal value for tpg_enable: %lu\n", op);
1238 return -EINVAL;
1239 }
1240 if (op) {
1241 if (atomic_read(&tpg->lport_tpg_enabled))
1242 return -EEXIST;
1243
1244 atomic_set(&tpg->lport_tpg_enabled, 1);
1245 qlt_enable_vha(vha);
1246 } else {
1247 if (!atomic_read(&tpg->lport_tpg_enabled))
1248 return count;
1249
1250 atomic_set(&tpg->lport_tpg_enabled, 0);
1251 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1252 }
1253
1254 return count;
1255 }
1256
1257 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1258
1259 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1260 &tcm_qla2xxx_npiv_tpg_enable.attr,
1261 NULL,
1262 };
1263
1264 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1265 struct se_wwn *wwn,
1266 struct config_group *group,
1267 const char *name)
1268 {
1269 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1270 struct tcm_qla2xxx_lport, lport_wwn);
1271 struct tcm_qla2xxx_tpg *tpg;
1272 unsigned long tpgt;
1273 int ret;
1274
1275 if (strstr(name, "tpgt_") != name)
1276 return ERR_PTR(-EINVAL);
1277 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1278 return ERR_PTR(-EINVAL);
1279
1280 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1281 if (!tpg) {
1282 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1283 return ERR_PTR(-ENOMEM);
1284 }
1285 tpg->lport = lport;
1286 tpg->lport_tpgt = tpgt;
1287
1288 /*
1289 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1290 * NodeACLs
1291 */
1292 tpg->tpg_attrib.generate_node_acls = 1;
1293 tpg->tpg_attrib.demo_mode_write_protect = 1;
1294 tpg->tpg_attrib.cache_dynamic_acls = 1;
1295 tpg->tpg_attrib.demo_mode_login_only = 1;
1296
1297 ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn,
1298 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1299 if (ret < 0) {
1300 kfree(tpg);
1301 return NULL;
1302 }
1303 lport->tpg_1 = tpg;
1304 return &tpg->se_tpg;
1305 }
1306
1307 /*
1308 * Expected to be called with struct qla_hw_data->hardware_lock held
1309 */
1310 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1311 scsi_qla_host_t *vha,
1312 const uint8_t *s_id)
1313 {
1314 struct tcm_qla2xxx_lport *lport;
1315 struct se_node_acl *se_nacl;
1316 struct tcm_qla2xxx_nacl *nacl;
1317 u32 key;
1318
1319 lport = vha->vha_tgt.target_lport_ptr;
1320 if (!lport) {
1321 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1322 dump_stack();
1323 return NULL;
1324 }
1325
1326 key = (((unsigned long)s_id[0] << 16) |
1327 ((unsigned long)s_id[1] << 8) |
1328 (unsigned long)s_id[2]);
1329 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1330
1331 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1332 if (!se_nacl) {
1333 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1334 return NULL;
1335 }
1336 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1337 se_nacl, se_nacl->initiatorname);
1338
1339 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1340 if (!nacl->qla_tgt_sess) {
1341 pr_err("Unable to locate struct qla_tgt_sess\n");
1342 return NULL;
1343 }
1344
1345 return nacl->qla_tgt_sess;
1346 }
1347
1348 /*
1349 * Expected to be called with struct qla_hw_data->hardware_lock held
1350 */
1351 static void tcm_qla2xxx_set_sess_by_s_id(
1352 struct tcm_qla2xxx_lport *lport,
1353 struct se_node_acl *new_se_nacl,
1354 struct tcm_qla2xxx_nacl *nacl,
1355 struct se_session *se_sess,
1356 struct qla_tgt_sess *qla_tgt_sess,
1357 uint8_t *s_id)
1358 {
1359 u32 key;
1360 void *slot;
1361 int rc;
1362
1363 key = (((unsigned long)s_id[0] << 16) |
1364 ((unsigned long)s_id[1] << 8) |
1365 (unsigned long)s_id[2]);
1366 pr_debug("set_sess_by_s_id: %06x\n", key);
1367
1368 slot = btree_lookup32(&lport->lport_fcport_map, key);
1369 if (!slot) {
1370 if (new_se_nacl) {
1371 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1372 nacl->nport_id = key;
1373 rc = btree_insert32(&lport->lport_fcport_map, key,
1374 new_se_nacl, GFP_ATOMIC);
1375 if (rc)
1376 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1377 (int)key);
1378 } else {
1379 pr_debug("Wiping nonexisting fc_port entry\n");
1380 }
1381
1382 qla_tgt_sess->se_sess = se_sess;
1383 nacl->qla_tgt_sess = qla_tgt_sess;
1384 return;
1385 }
1386
1387 if (nacl->qla_tgt_sess) {
1388 if (new_se_nacl == NULL) {
1389 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1390 btree_remove32(&lport->lport_fcport_map, key);
1391 nacl->qla_tgt_sess = NULL;
1392 return;
1393 }
1394 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1395 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1396 qla_tgt_sess->se_sess = se_sess;
1397 nacl->qla_tgt_sess = qla_tgt_sess;
1398 return;
1399 }
1400
1401 if (new_se_nacl == NULL) {
1402 pr_debug("Clearing existing fc_port entry\n");
1403 btree_remove32(&lport->lport_fcport_map, key);
1404 return;
1405 }
1406
1407 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1408 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1409 qla_tgt_sess->se_sess = se_sess;
1410 nacl->qla_tgt_sess = qla_tgt_sess;
1411
1412 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1413 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1414 }
1415
1416 /*
1417 * Expected to be called with struct qla_hw_data->hardware_lock held
1418 */
1419 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1420 scsi_qla_host_t *vha,
1421 const uint16_t loop_id)
1422 {
1423 struct tcm_qla2xxx_lport *lport;
1424 struct se_node_acl *se_nacl;
1425 struct tcm_qla2xxx_nacl *nacl;
1426 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1427
1428 lport = vha->vha_tgt.target_lport_ptr;
1429 if (!lport) {
1430 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1431 dump_stack();
1432 return NULL;
1433 }
1434
1435 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1436
1437 fc_loopid = lport->lport_loopid_map + loop_id;
1438 se_nacl = fc_loopid->se_nacl;
1439 if (!se_nacl) {
1440 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1441 loop_id);
1442 return NULL;
1443 }
1444
1445 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1446
1447 if (!nacl->qla_tgt_sess) {
1448 pr_err("Unable to locate struct qla_tgt_sess\n");
1449 return NULL;
1450 }
1451
1452 return nacl->qla_tgt_sess;
1453 }
1454
1455 /*
1456 * Expected to be called with struct qla_hw_data->hardware_lock held
1457 */
1458 static void tcm_qla2xxx_set_sess_by_loop_id(
1459 struct tcm_qla2xxx_lport *lport,
1460 struct se_node_acl *new_se_nacl,
1461 struct tcm_qla2xxx_nacl *nacl,
1462 struct se_session *se_sess,
1463 struct qla_tgt_sess *qla_tgt_sess,
1464 uint16_t loop_id)
1465 {
1466 struct se_node_acl *saved_nacl;
1467 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1468
1469 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1470
1471 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1472 lport->lport_loopid_map)[loop_id];
1473
1474 saved_nacl = fc_loopid->se_nacl;
1475 if (!saved_nacl) {
1476 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1477 fc_loopid->se_nacl = new_se_nacl;
1478 if (qla_tgt_sess->se_sess != se_sess)
1479 qla_tgt_sess->se_sess = se_sess;
1480 if (nacl->qla_tgt_sess != qla_tgt_sess)
1481 nacl->qla_tgt_sess = qla_tgt_sess;
1482 return;
1483 }
1484
1485 if (nacl->qla_tgt_sess) {
1486 if (new_se_nacl == NULL) {
1487 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1488 fc_loopid->se_nacl = NULL;
1489 nacl->qla_tgt_sess = NULL;
1490 return;
1491 }
1492
1493 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1494 fc_loopid->se_nacl = new_se_nacl;
1495 if (qla_tgt_sess->se_sess != se_sess)
1496 qla_tgt_sess->se_sess = se_sess;
1497 if (nacl->qla_tgt_sess != qla_tgt_sess)
1498 nacl->qla_tgt_sess = qla_tgt_sess;
1499 return;
1500 }
1501
1502 if (new_se_nacl == NULL) {
1503 pr_debug("Clearing fc_loopid->se_nacl\n");
1504 fc_loopid->se_nacl = NULL;
1505 return;
1506 }
1507
1508 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1509 fc_loopid->se_nacl = new_se_nacl;
1510 if (qla_tgt_sess->se_sess != se_sess)
1511 qla_tgt_sess->se_sess = se_sess;
1512 if (nacl->qla_tgt_sess != qla_tgt_sess)
1513 nacl->qla_tgt_sess = qla_tgt_sess;
1514
1515 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1516 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1517 }
1518
1519 /*
1520 * Should always be called with qla_hw_data->hardware_lock held.
1521 */
1522 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1523 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1524 {
1525 struct se_session *se_sess = sess->se_sess;
1526 unsigned char be_sid[3];
1527
1528 be_sid[0] = sess->s_id.b.domain;
1529 be_sid[1] = sess->s_id.b.area;
1530 be_sid[2] = sess->s_id.b.al_pa;
1531
1532 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1533 sess, be_sid);
1534 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1535 sess, sess->loop_id);
1536 }
1537
1538 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1539 {
1540 struct qla_tgt *tgt = sess->tgt;
1541 struct qla_hw_data *ha = tgt->ha;
1542 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1543 struct se_session *se_sess;
1544 struct se_node_acl *se_nacl;
1545 struct tcm_qla2xxx_lport *lport;
1546 struct tcm_qla2xxx_nacl *nacl;
1547
1548 BUG_ON(in_interrupt());
1549
1550 se_sess = sess->se_sess;
1551 if (!se_sess) {
1552 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1553 dump_stack();
1554 return;
1555 }
1556 se_nacl = se_sess->se_node_acl;
1557 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1558
1559 lport = vha->vha_tgt.target_lport_ptr;
1560 if (!lport) {
1561 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1562 dump_stack();
1563 return;
1564 }
1565 target_wait_for_sess_cmds(se_sess);
1566
1567 transport_deregister_session_configfs(sess->se_sess);
1568 transport_deregister_session(sess->se_sess);
1569 }
1570
1571 /*
1572 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1573 * to locate struct se_node_acl
1574 */
1575 static int tcm_qla2xxx_check_initiator_node_acl(
1576 scsi_qla_host_t *vha,
1577 unsigned char *fc_wwpn,
1578 void *qla_tgt_sess,
1579 uint8_t *s_id,
1580 uint16_t loop_id)
1581 {
1582 struct qla_hw_data *ha = vha->hw;
1583 struct tcm_qla2xxx_lport *lport;
1584 struct tcm_qla2xxx_tpg *tpg;
1585 struct tcm_qla2xxx_nacl *nacl;
1586 struct se_portal_group *se_tpg;
1587 struct se_node_acl *se_nacl;
1588 struct se_session *se_sess;
1589 struct qla_tgt_sess *sess = qla_tgt_sess;
1590 unsigned char port_name[36];
1591 unsigned long flags;
1592 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1593 TCM_QLA2XXX_DEFAULT_TAGS;
1594
1595 lport = vha->vha_tgt.target_lport_ptr;
1596 if (!lport) {
1597 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1598 dump_stack();
1599 return -EINVAL;
1600 }
1601 /*
1602 * Locate the TPG=1 reference..
1603 */
1604 tpg = lport->tpg_1;
1605 if (!tpg) {
1606 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1607 return -EINVAL;
1608 }
1609 se_tpg = &tpg->se_tpg;
1610
1611 se_sess = transport_init_session_tags(num_tags,
1612 sizeof(struct qla_tgt_cmd),
1613 TARGET_PROT_ALL);
1614 if (IS_ERR(se_sess)) {
1615 pr_err("Unable to initialize struct se_session\n");
1616 return PTR_ERR(se_sess);
1617 }
1618 /*
1619 * Format the FCP Initiator port_name into colon seperated values to
1620 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1621 */
1622 memset(&port_name, 0, 36);
1623 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1624 /*
1625 * Locate our struct se_node_acl either from an explict NodeACL created
1626 * via ConfigFS, or via running in TPG demo mode.
1627 */
1628 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1629 port_name);
1630 if (!se_sess->se_node_acl) {
1631 transport_free_session(se_sess);
1632 return -EINVAL;
1633 }
1634 se_nacl = se_sess->se_node_acl;
1635 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1636 /*
1637 * And now setup the new se_nacl and session pointers into our HW lport
1638 * mappings for fabric S_ID and LOOP_ID.
1639 */
1640 spin_lock_irqsave(&ha->hardware_lock, flags);
1641 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1642 qla_tgt_sess, s_id);
1643 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1644 qla_tgt_sess, loop_id);
1645 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1646 /*
1647 * Finally register the new FC Nexus with TCM
1648 */
1649 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1650
1651 return 0;
1652 }
1653
1654 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1655 uint16_t loop_id, bool conf_compl_supported)
1656 {
1657 struct qla_tgt *tgt = sess->tgt;
1658 struct qla_hw_data *ha = tgt->ha;
1659 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1660 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1661 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1662 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1663 struct tcm_qla2xxx_nacl, se_node_acl);
1664 u32 key;
1665
1666
1667 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1668 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1669 sess, sess->port_name,
1670 sess->loop_id, loop_id, sess->s_id.b.domain,
1671 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1672 s_id.b.area, s_id.b.al_pa);
1673
1674 if (sess->loop_id != loop_id) {
1675 /*
1676 * Because we can shuffle loop IDs around and we
1677 * update different sessions non-atomically, we might
1678 * have overwritten this session's old loop ID
1679 * already, and we might end up overwriting some other
1680 * session that will be updated later. So we have to
1681 * be extra careful and we can't warn about those things...
1682 */
1683 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1684 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1685
1686 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1687
1688 sess->loop_id = loop_id;
1689 }
1690
1691 if (sess->s_id.b24 != s_id.b24) {
1692 key = (((u32) sess->s_id.b.domain << 16) |
1693 ((u32) sess->s_id.b.area << 8) |
1694 ((u32) sess->s_id.b.al_pa));
1695
1696 if (btree_lookup32(&lport->lport_fcport_map, key))
1697 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1698 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1699 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1700 else
1701 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1702 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1703
1704 key = (((u32) s_id.b.domain << 16) |
1705 ((u32) s_id.b.area << 8) |
1706 ((u32) s_id.b.al_pa));
1707
1708 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1709 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1710 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1711 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1712 } else {
1713 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1714 }
1715
1716 sess->s_id = s_id;
1717 nacl->nport_id = key;
1718 }
1719
1720 sess->conf_compl_supported = conf_compl_supported;
1721 }
1722
1723 /*
1724 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1725 */
1726 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1727 .handle_cmd = tcm_qla2xxx_handle_cmd,
1728 .handle_data = tcm_qla2xxx_handle_data,
1729 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1730 .handle_tmr = tcm_qla2xxx_handle_tmr,
1731 .free_cmd = tcm_qla2xxx_free_cmd,
1732 .free_mcmd = tcm_qla2xxx_free_mcmd,
1733 .free_session = tcm_qla2xxx_free_session,
1734 .update_sess = tcm_qla2xxx_update_sess,
1735 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1736 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1737 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1738 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1739 .put_sess = tcm_qla2xxx_put_sess,
1740 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1741 };
1742
1743 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1744 {
1745 int rc;
1746
1747 rc = btree_init32(&lport->lport_fcport_map);
1748 if (rc) {
1749 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1750 return rc;
1751 }
1752
1753 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1754 65536);
1755 if (!lport->lport_loopid_map) {
1756 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1757 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1758 btree_destroy32(&lport->lport_fcport_map);
1759 return -ENOMEM;
1760 }
1761 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1762 * 65536);
1763 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1764 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1765 return 0;
1766 }
1767
1768 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1769 void *target_lport_ptr,
1770 u64 npiv_wwpn, u64 npiv_wwnn)
1771 {
1772 struct qla_hw_data *ha = vha->hw;
1773 struct tcm_qla2xxx_lport *lport =
1774 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1775 /*
1776 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1777 */
1778 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1779 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1780 lport->qla_vha = vha;
1781
1782 return 0;
1783 }
1784
1785 static struct se_wwn *tcm_qla2xxx_make_lport(
1786 struct target_fabric_configfs *tf,
1787 struct config_group *group,
1788 const char *name)
1789 {
1790 struct tcm_qla2xxx_lport *lport;
1791 u64 wwpn;
1792 int ret = -ENODEV;
1793
1794 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1795 return ERR_PTR(-EINVAL);
1796
1797 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1798 if (!lport) {
1799 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1800 return ERR_PTR(-ENOMEM);
1801 }
1802 lport->lport_wwpn = wwpn;
1803 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1804 wwpn);
1805 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1806
1807 ret = tcm_qla2xxx_init_lport(lport);
1808 if (ret != 0)
1809 goto out;
1810
1811 ret = qlt_lport_register(lport, wwpn, 0, 0,
1812 tcm_qla2xxx_lport_register_cb);
1813 if (ret != 0)
1814 goto out_lport;
1815
1816 return &lport->lport_wwn;
1817 out_lport:
1818 vfree(lport->lport_loopid_map);
1819 btree_destroy32(&lport->lport_fcport_map);
1820 out:
1821 kfree(lport);
1822 return ERR_PTR(ret);
1823 }
1824
1825 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1826 {
1827 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1828 struct tcm_qla2xxx_lport, lport_wwn);
1829 struct scsi_qla_host *vha = lport->qla_vha;
1830 struct se_node_acl *node;
1831 u32 key = 0;
1832
1833 /*
1834 * Call into qla2x_target.c LLD logic to complete the
1835 * shutdown of struct qla_tgt after the call to
1836 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1837 */
1838 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1839 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1840
1841 qlt_lport_deregister(vha);
1842
1843 vfree(lport->lport_loopid_map);
1844 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1845 btree_remove32(&lport->lport_fcport_map, key);
1846 btree_destroy32(&lport->lport_fcport_map);
1847 kfree(lport);
1848 }
1849
1850 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1851 void *target_lport_ptr,
1852 u64 npiv_wwpn, u64 npiv_wwnn)
1853 {
1854 struct fc_vport *vport;
1855 struct Scsi_Host *sh = base_vha->host;
1856 struct scsi_qla_host *npiv_vha;
1857 struct tcm_qla2xxx_lport *lport =
1858 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1859 struct tcm_qla2xxx_lport *base_lport =
1860 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1861 struct tcm_qla2xxx_tpg *base_tpg;
1862 struct fc_vport_identifiers vport_id;
1863
1864 if (!qla_tgt_mode_enabled(base_vha)) {
1865 pr_err("qla2xxx base_vha not enabled for target mode\n");
1866 return -EPERM;
1867 }
1868
1869 if (!base_lport || !base_lport->tpg_1 ||
1870 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1871 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1872 return -EPERM;
1873 }
1874 base_tpg = base_lport->tpg_1;
1875
1876 memset(&vport_id, 0, sizeof(vport_id));
1877 vport_id.port_name = npiv_wwpn;
1878 vport_id.node_name = npiv_wwnn;
1879 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1880 vport_id.vport_type = FC_PORTTYPE_NPIV;
1881 vport_id.disable = false;
1882
1883 vport = fc_vport_create(sh, 0, &vport_id);
1884 if (!vport) {
1885 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1886 return -ENODEV;
1887 }
1888 /*
1889 * Setup local pointer to NPIV vhba + target_lport_ptr
1890 */
1891 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1892 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1893 lport->qla_vha = npiv_vha;
1894 scsi_host_get(npiv_vha->host);
1895 return 0;
1896 }
1897
1898
1899 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1900 struct target_fabric_configfs *tf,
1901 struct config_group *group,
1902 const char *name)
1903 {
1904 struct tcm_qla2xxx_lport *lport;
1905 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1906 char *p, tmp[128];
1907 int ret;
1908
1909 snprintf(tmp, 128, "%s", name);
1910
1911 p = strchr(tmp, '@');
1912 if (!p) {
1913 pr_err("Unable to locate NPIV '@' seperator\n");
1914 return ERR_PTR(-EINVAL);
1915 }
1916 *p++ = '\0';
1917
1918 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1919 return ERR_PTR(-EINVAL);
1920
1921 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1922 &npiv_wwpn, &npiv_wwnn) < 0)
1923 return ERR_PTR(-EINVAL);
1924
1925 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1926 if (!lport) {
1927 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1928 return ERR_PTR(-ENOMEM);
1929 }
1930 lport->lport_npiv_wwpn = npiv_wwpn;
1931 lport->lport_npiv_wwnn = npiv_wwnn;
1932 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1933
1934 ret = tcm_qla2xxx_init_lport(lport);
1935 if (ret != 0)
1936 goto out;
1937
1938 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1939 tcm_qla2xxx_lport_register_npiv_cb);
1940 if (ret != 0)
1941 goto out_lport;
1942
1943 return &lport->lport_wwn;
1944 out_lport:
1945 vfree(lport->lport_loopid_map);
1946 btree_destroy32(&lport->lport_fcport_map);
1947 out:
1948 kfree(lport);
1949 return ERR_PTR(ret);
1950 }
1951
1952 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1953 {
1954 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1955 struct tcm_qla2xxx_lport, lport_wwn);
1956 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1957 struct qla_hw_data *ha = npiv_vha->hw;
1958 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1959
1960 scsi_host_put(npiv_vha->host);
1961 /*
1962 * Notify libfc that we want to release the vha->fc_vport
1963 */
1964 fc_vport_terminate(npiv_vha->fc_vport);
1965 scsi_host_put(base_vha->host);
1966 kfree(lport);
1967 }
1968
1969
1970 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1971 struct target_fabric_configfs *tf,
1972 char *page)
1973 {
1974 return sprintf(page,
1975 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1976 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1977 utsname()->machine);
1978 }
1979
1980 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1981
1982 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1983 &tcm_qla2xxx_wwn_version.attr,
1984 NULL,
1985 };
1986
1987 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1988 .module = THIS_MODULE,
1989 .name = "qla2xxx",
1990 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1991 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1992 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1993 .tpg_get_tag = tcm_qla2xxx_get_tag,
1994 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1995 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1996 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1997 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1998 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1999 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
2000 .tpg_check_demo_mode_write_protect =
2001 tcm_qla2xxx_check_demo_write_protect,
2002 .tpg_check_prod_mode_write_protect =
2003 tcm_qla2xxx_check_prod_write_protect,
2004 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
2005 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
2006 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
2007 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
2008 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
2009 .check_stop_free = tcm_qla2xxx_check_stop_free,
2010 .release_cmd = tcm_qla2xxx_release_cmd,
2011 .put_session = tcm_qla2xxx_put_session,
2012 .shutdown_session = tcm_qla2xxx_shutdown_session,
2013 .close_session = tcm_qla2xxx_close_session,
2014 .sess_get_index = tcm_qla2xxx_sess_get_index,
2015 .sess_get_initiator_sid = NULL,
2016 .write_pending = tcm_qla2xxx_write_pending,
2017 .write_pending_status = tcm_qla2xxx_write_pending_status,
2018 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
2019 .get_task_tag = tcm_qla2xxx_get_task_tag,
2020 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
2021 .queue_data_in = tcm_qla2xxx_queue_data_in,
2022 .queue_status = tcm_qla2xxx_queue_status,
2023 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
2024 .aborted_task = tcm_qla2xxx_aborted_task,
2025 /*
2026 * Setup function pointers for generic logic in
2027 * target_core_fabric_configfs.c
2028 */
2029 .fabric_make_wwn = tcm_qla2xxx_make_lport,
2030 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
2031 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
2032 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
2033 .fabric_post_link = NULL,
2034 .fabric_pre_unlink = NULL,
2035 .fabric_make_np = NULL,
2036 .fabric_drop_np = NULL,
2037 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
2038 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
2039
2040 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
2041 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
2042 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
2043 };
2044
2045 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
2046 .module = THIS_MODULE,
2047 .name = "qla2xxx_npiv",
2048 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
2049 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
2050 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
2051 .tpg_get_tag = tcm_qla2xxx_get_tag,
2052 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
2053 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
2054 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
2055 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
2056 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
2057 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
2058 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
2059 .tpg_check_prod_mode_write_protect =
2060 tcm_qla2xxx_check_prod_write_protect,
2061 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
2062 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
2063 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
2064 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
2065 .check_stop_free = tcm_qla2xxx_check_stop_free,
2066 .release_cmd = tcm_qla2xxx_release_cmd,
2067 .put_session = tcm_qla2xxx_put_session,
2068 .shutdown_session = tcm_qla2xxx_shutdown_session,
2069 .close_session = tcm_qla2xxx_close_session,
2070 .sess_get_index = tcm_qla2xxx_sess_get_index,
2071 .sess_get_initiator_sid = NULL,
2072 .write_pending = tcm_qla2xxx_write_pending,
2073 .write_pending_status = tcm_qla2xxx_write_pending_status,
2074 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
2075 .get_task_tag = tcm_qla2xxx_get_task_tag,
2076 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
2077 .queue_data_in = tcm_qla2xxx_queue_data_in,
2078 .queue_status = tcm_qla2xxx_queue_status,
2079 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
2080 .aborted_task = tcm_qla2xxx_aborted_task,
2081 /*
2082 * Setup function pointers for generic logic in
2083 * target_core_fabric_configfs.c
2084 */
2085 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
2086 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
2087 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
2088 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
2089 .fabric_post_link = NULL,
2090 .fabric_pre_unlink = NULL,
2091 .fabric_make_np = NULL,
2092 .fabric_drop_np = NULL,
2093 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
2094 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
2095
2096 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
2097 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
2098 };
2099
2100 static int tcm_qla2xxx_register_configfs(void)
2101 {
2102 int ret;
2103
2104 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
2105 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
2106 utsname()->machine);
2107
2108 ret = target_register_template(&tcm_qla2xxx_ops);
2109 if (ret)
2110 return ret;
2111
2112 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
2113 if (ret)
2114 goto out_fabric;
2115
2116 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2117 WQ_MEM_RECLAIM, 0);
2118 if (!tcm_qla2xxx_free_wq) {
2119 ret = -ENOMEM;
2120 goto out_fabric_npiv;
2121 }
2122
2123 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
2124 if (!tcm_qla2xxx_cmd_wq) {
2125 ret = -ENOMEM;
2126 goto out_free_wq;
2127 }
2128
2129 return 0;
2130
2131 out_free_wq:
2132 destroy_workqueue(tcm_qla2xxx_free_wq);
2133 out_fabric_npiv:
2134 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2135 out_fabric:
2136 target_unregister_template(&tcm_qla2xxx_ops);
2137 return ret;
2138 }
2139
2140 static void tcm_qla2xxx_deregister_configfs(void)
2141 {
2142 destroy_workqueue(tcm_qla2xxx_cmd_wq);
2143 destroy_workqueue(tcm_qla2xxx_free_wq);
2144
2145 target_unregister_template(&tcm_qla2xxx_ops);
2146 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2147 }
2148
2149 static int __init tcm_qla2xxx_init(void)
2150 {
2151 int ret;
2152
2153 ret = tcm_qla2xxx_register_configfs();
2154 if (ret < 0)
2155 return ret;
2156
2157 return 0;
2158 }
2159
2160 static void __exit tcm_qla2xxx_exit(void)
2161 {
2162 tcm_qla2xxx_deregister_configfs();
2163 }
2164
2165 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2166 MODULE_LICENSE("GPL");
2167 module_init(tcm_qla2xxx_init);
2168 module_exit(tcm_qla2xxx_exit);