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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/target_core_configfs.h>
48 #include <target/configfs_macros.h>
49
50 #include "qla_def.h"
51 #include "qla_target.h"
52 #include "tcm_qla2xxx.h"
53
54 static struct workqueue_struct *tcm_qla2xxx_free_wq;
55 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
56
57 static const struct target_core_fabric_ops tcm_qla2xxx_ops;
58 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops;
59
60 /*
61 * Parse WWN.
62 * If strict, we require lower-case hex and colon separators to be sure
63 * the name is the same as what would be generated by ft_format_wwn()
64 * so the name and wwn are mapped one-to-one.
65 */
66 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
67 {
68 const char *cp;
69 char c;
70 u32 nibble;
71 u32 byte = 0;
72 u32 pos = 0;
73 u32 err;
74
75 *wwn = 0;
76 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
77 c = *cp;
78 if (c == '\n' && cp[1] == '\0')
79 continue;
80 if (strict && pos++ == 2 && byte++ < 7) {
81 pos = 0;
82 if (c == ':')
83 continue;
84 err = 1;
85 goto fail;
86 }
87 if (c == '\0') {
88 err = 2;
89 if (strict && byte != 8)
90 goto fail;
91 return cp - name;
92 }
93 err = 3;
94 if (isdigit(c))
95 nibble = c - '0';
96 else if (isxdigit(c) && (islower(c) || !strict))
97 nibble = tolower(c) - 'a' + 10;
98 else
99 goto fail;
100 *wwn = (*wwn << 4) | nibble;
101 }
102 err = 4;
103 fail:
104 pr_debug("err %u len %zu pos %u byte %u\n",
105 err, cp - name, pos, byte);
106 return -1;
107 }
108
109 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
110 {
111 u8 b[8];
112
113 put_unaligned_be64(wwn, b);
114 return snprintf(buf, len,
115 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
116 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
117 }
118
119 static char *tcm_qla2xxx_get_fabric_name(void)
120 {
121 return "qla2xxx";
122 }
123
124 /*
125 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
126 */
127 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
128 {
129 unsigned int i, j;
130 u8 wwn[8];
131
132 memset(wwn, 0, sizeof(wwn));
133
134 /* Validate and store the new name */
135 for (i = 0, j = 0; i < 16; i++) {
136 int value;
137
138 value = hex_to_bin(*ns++);
139 if (value >= 0)
140 j = (j << 4) | value;
141 else
142 return -EINVAL;
143
144 if (i % 2) {
145 wwn[i/2] = j & 0xff;
146 j = 0;
147 }
148 }
149
150 *nm = wwn_to_u64(wwn);
151 return 0;
152 }
153
154 /*
155 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
156 * store_fc_host_vport_create()
157 */
158 static int tcm_qla2xxx_npiv_parse_wwn(
159 const char *name,
160 size_t count,
161 u64 *wwpn,
162 u64 *wwnn)
163 {
164 unsigned int cnt = count;
165 int rc;
166
167 *wwpn = 0;
168 *wwnn = 0;
169
170 /* count may include a LF at end of string */
171 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
172 cnt--;
173
174 /* validate we have enough characters for WWPN */
175 if ((cnt != (16+1+16)) || (name[16] != ':'))
176 return -EINVAL;
177
178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
179 if (rc != 0)
180 return rc;
181
182 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
183 if (rc != 0)
184 return rc;
185
186 return 0;
187 }
188
189 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
190 {
191 return "qla2xxx_npiv";
192 }
193
194 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
195 {
196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
197 struct tcm_qla2xxx_tpg, se_tpg);
198 struct tcm_qla2xxx_lport *lport = tpg->lport;
199 u8 proto_id;
200
201 switch (lport->lport_proto_id) {
202 case SCSI_PROTOCOL_FCP:
203 default:
204 proto_id = fc_get_fabric_proto_ident(se_tpg);
205 break;
206 }
207
208 return proto_id;
209 }
210
211 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
212 {
213 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
214 struct tcm_qla2xxx_tpg, se_tpg);
215 struct tcm_qla2xxx_lport *lport = tpg->lport;
216
217 return lport->lport_naa_name;
218 }
219
220 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
221 {
222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
223 struct tcm_qla2xxx_tpg, se_tpg);
224 return tpg->lport_tpgt;
225 }
226
227 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
228 {
229 return 1;
230 }
231
232 static u32 tcm_qla2xxx_get_pr_transport_id(
233 struct se_portal_group *se_tpg,
234 struct se_node_acl *se_nacl,
235 struct t10_pr_registration *pr_reg,
236 int *format_code,
237 unsigned char *buf)
238 {
239 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
240 struct tcm_qla2xxx_tpg, se_tpg);
241 struct tcm_qla2xxx_lport *lport = tpg->lport;
242 int ret = 0;
243
244 switch (lport->lport_proto_id) {
245 case SCSI_PROTOCOL_FCP:
246 default:
247 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
248 format_code, buf);
249 break;
250 }
251
252 return ret;
253 }
254
255 static u32 tcm_qla2xxx_get_pr_transport_id_len(
256 struct se_portal_group *se_tpg,
257 struct se_node_acl *se_nacl,
258 struct t10_pr_registration *pr_reg,
259 int *format_code)
260 {
261 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
262 struct tcm_qla2xxx_tpg, se_tpg);
263 struct tcm_qla2xxx_lport *lport = tpg->lport;
264 int ret = 0;
265
266 switch (lport->lport_proto_id) {
267 case SCSI_PROTOCOL_FCP:
268 default:
269 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
270 format_code);
271 break;
272 }
273
274 return ret;
275 }
276
277 static char *tcm_qla2xxx_parse_pr_out_transport_id(
278 struct se_portal_group *se_tpg,
279 const char *buf,
280 u32 *out_tid_len,
281 char **port_nexus_ptr)
282 {
283 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
284 struct tcm_qla2xxx_tpg, se_tpg);
285 struct tcm_qla2xxx_lport *lport = tpg->lport;
286 char *tid = NULL;
287
288 switch (lport->lport_proto_id) {
289 case SCSI_PROTOCOL_FCP:
290 default:
291 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
292 port_nexus_ptr);
293 break;
294 }
295
296 return tid;
297 }
298
299 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
300 {
301 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
302 struct tcm_qla2xxx_tpg, se_tpg);
303
304 return tpg->tpg_attrib.generate_node_acls;
305 }
306
307 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
308 {
309 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
310 struct tcm_qla2xxx_tpg, se_tpg);
311
312 return tpg->tpg_attrib.cache_dynamic_acls;
313 }
314
315 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
316 {
317 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
318 struct tcm_qla2xxx_tpg, se_tpg);
319
320 return tpg->tpg_attrib.demo_mode_write_protect;
321 }
322
323 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
324 {
325 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
326 struct tcm_qla2xxx_tpg, se_tpg);
327
328 return tpg->tpg_attrib.prod_mode_write_protect;
329 }
330
331 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
332 {
333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
334 struct tcm_qla2xxx_tpg, se_tpg);
335
336 return tpg->tpg_attrib.demo_mode_login_only;
337 }
338
339 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
340 {
341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
342 struct tcm_qla2xxx_tpg, se_tpg);
343
344 return tpg->tpg_attrib.fabric_prot_type;
345 }
346
347 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
348 struct se_portal_group *se_tpg)
349 {
350 struct tcm_qla2xxx_nacl *nacl;
351
352 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
353 if (!nacl) {
354 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
355 return NULL;
356 }
357
358 return &nacl->se_node_acl;
359 }
360
361 static void tcm_qla2xxx_release_fabric_acl(
362 struct se_portal_group *se_tpg,
363 struct se_node_acl *se_nacl)
364 {
365 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
366 struct tcm_qla2xxx_nacl, se_node_acl);
367 kfree(nacl);
368 }
369
370 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
371 {
372 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
373 struct tcm_qla2xxx_tpg, se_tpg);
374
375 return tpg->lport_tpgt;
376 }
377
378 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
379 {
380 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
381 struct qla_tgt_mgmt_cmd, free_work);
382
383 transport_generic_free_cmd(&mcmd->se_cmd, 0);
384 }
385
386 /*
387 * Called from qla_target_template->free_mcmd(), and will call
388 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
389 * release callback. qla_hw_data->hardware_lock is expected to be held
390 */
391 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
392 {
393 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
394 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
395 }
396
397 static void tcm_qla2xxx_complete_free(struct work_struct *work)
398 {
399 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
400
401 cmd->cmd_in_wq = 0;
402
403 WARN_ON(cmd->cmd_flags & BIT_16);
404
405 cmd->cmd_flags |= BIT_16;
406 transport_generic_free_cmd(&cmd->se_cmd, 0);
407 }
408
409 /*
410 * Called from qla_target_template->free_cmd(), and will call
411 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
412 * release callback. qla_hw_data->hardware_lock is expected to be held
413 */
414 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
415 {
416 cmd->cmd_in_wq = 1;
417 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
418 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
419 }
420
421 /*
422 * Called from struct target_core_fabric_ops->check_stop_free() context
423 */
424 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
425 {
426 struct qla_tgt_cmd *cmd;
427
428 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
429 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
430 cmd->cmd_flags |= BIT_14;
431 }
432
433 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
434 }
435
436 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
437 * fabric descriptor @se_cmd command to release
438 */
439 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
440 {
441 struct qla_tgt_cmd *cmd;
442
443 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
444 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
445 struct qla_tgt_mgmt_cmd, se_cmd);
446 qlt_free_mcmd(mcmd);
447 return;
448 }
449
450 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
451 qlt_free_cmd(cmd);
452 }
453
454 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
455 {
456 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
457 struct scsi_qla_host *vha;
458 unsigned long flags;
459
460 BUG_ON(!sess);
461 vha = sess->vha;
462
463 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
464 target_sess_cmd_list_set_waiting(se_sess);
465 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
466
467 return 1;
468 }
469
470 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
471 {
472 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
473 struct scsi_qla_host *vha;
474 unsigned long flags;
475
476 BUG_ON(!sess);
477 vha = sess->vha;
478
479 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
480 qlt_unreg_sess(sess);
481 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
482 }
483
484 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
485 {
486 return 0;
487 }
488
489 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
490 {
491 struct qla_tgt_cmd *cmd = container_of(se_cmd,
492 struct qla_tgt_cmd, se_cmd);
493
494 cmd->bufflen = se_cmd->data_length;
495 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
496
497 cmd->sg_cnt = se_cmd->t_data_nents;
498 cmd->sg = se_cmd->t_data_sg;
499
500 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
501 cmd->prot_sg = se_cmd->t_prot_sg;
502 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
503 se_cmd->pi_err = 0;
504
505 /*
506 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
507 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
508 */
509 return qlt_rdy_to_xfer(cmd);
510 }
511
512 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
513 {
514 unsigned long flags;
515 /*
516 * Check for WRITE_PENDING status to determine if we need to wait for
517 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
518 */
519 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
520 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
521 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
522 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
523 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
524 3000);
525 return 0;
526 }
527 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
528
529 return 0;
530 }
531
532 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
533 {
534 return;
535 }
536
537 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
538 {
539 struct qla_tgt_cmd *cmd;
540
541 /* check for task mgmt cmd */
542 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
543 return 0xffffffff;
544
545 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
546
547 return cmd->tag;
548 }
549
550 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
551 {
552 return 0;
553 }
554
555 /*
556 * Called from process context in qla_target.c:qlt_do_work() code
557 */
558 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
559 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
560 int data_dir, int bidi)
561 {
562 struct se_cmd *se_cmd = &cmd->se_cmd;
563 struct se_session *se_sess;
564 struct qla_tgt_sess *sess;
565 int flags = TARGET_SCF_ACK_KREF;
566
567 if (bidi)
568 flags |= TARGET_SCF_BIDI_OP;
569
570 sess = cmd->sess;
571 if (!sess) {
572 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
573 return -EINVAL;
574 }
575
576 se_sess = sess->se_sess;
577 if (!se_sess) {
578 pr_err("Unable to locate active struct se_session\n");
579 return -EINVAL;
580 }
581
582 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
583 cmd->unpacked_lun, data_length, fcp_task_attr,
584 data_dir, flags);
585 }
586
587 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
588 {
589 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
590
591 /*
592 * Ensure that the complete FCP WRITE payload has been received.
593 * Otherwise return an exception via CHECK_CONDITION status.
594 */
595 cmd->cmd_in_wq = 0;
596 cmd->cmd_flags |= BIT_11;
597 if (!cmd->write_data_transferred) {
598 /*
599 * Check if se_cmd has already been aborted via LUN_RESET, and
600 * waiting upon completion in tcm_qla2xxx_write_pending_status()
601 */
602 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
603 complete(&cmd->se_cmd.t_transport_stop_comp);
604 return;
605 }
606
607 if (cmd->se_cmd.pi_err)
608 transport_generic_request_failure(&cmd->se_cmd,
609 cmd->se_cmd.pi_err);
610 else
611 transport_generic_request_failure(&cmd->se_cmd,
612 TCM_CHECK_CONDITION_ABORT_CMD);
613
614 return;
615 }
616
617 return target_execute_cmd(&cmd->se_cmd);
618 }
619
620 /*
621 * Called from qla_target.c:qlt_do_ctio_completion()
622 */
623 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
624 {
625 cmd->cmd_flags |= BIT_10;
626 cmd->cmd_in_wq = 1;
627 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
628 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
629 }
630
631 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
632 {
633 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
634
635 /* take an extra kref to prevent cmd free too early.
636 * need to wait for SCSI status/check condition to
637 * finish responding generate by transport_generic_request_failure.
638 */
639 kref_get(&cmd->se_cmd.cmd_kref);
640 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
641 }
642
643 /*
644 * Called from qla_target.c:qlt_do_ctio_completion()
645 */
646 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
647 {
648 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
649 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
650 }
651
652 /*
653 * Called from qla_target.c:qlt_issue_task_mgmt()
654 */
655 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
656 uint8_t tmr_func, uint32_t tag)
657 {
658 struct qla_tgt_sess *sess = mcmd->sess;
659 struct se_cmd *se_cmd = &mcmd->se_cmd;
660
661 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
662 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
663 }
664
665 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
666 {
667 struct qla_tgt_cmd *cmd = container_of(se_cmd,
668 struct qla_tgt_cmd, se_cmd);
669
670 cmd->cmd_flags |= BIT_4;
671 cmd->bufflen = se_cmd->data_length;
672 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
673 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
674
675 cmd->sg_cnt = se_cmd->t_data_nents;
676 cmd->sg = se_cmd->t_data_sg;
677 cmd->offset = 0;
678 cmd->cmd_flags |= BIT_3;
679
680 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
681 cmd->prot_sg = se_cmd->t_prot_sg;
682 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
683 se_cmd->pi_err = 0;
684
685 /*
686 * Now queue completed DATA_IN the qla2xxx LLD and response ring
687 */
688 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
689 se_cmd->scsi_status);
690 }
691
692 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
693 {
694 struct qla_tgt_cmd *cmd = container_of(se_cmd,
695 struct qla_tgt_cmd, se_cmd);
696 int xmit_type = QLA_TGT_XMIT_STATUS;
697
698 cmd->bufflen = se_cmd->data_length;
699 cmd->sg = NULL;
700 cmd->sg_cnt = 0;
701 cmd->offset = 0;
702 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
703 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
704 if (cmd->cmd_flags & BIT_5) {
705 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
706 dump_stack();
707 }
708 cmd->cmd_flags |= BIT_5;
709
710 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
711 /*
712 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
713 * for qla_tgt_xmit_response LLD code
714 */
715 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
716 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
717 se_cmd->residual_count = 0;
718 }
719 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
720 se_cmd->residual_count += se_cmd->data_length;
721
722 cmd->bufflen = 0;
723 }
724 /*
725 * Now queue status response to qla2xxx LLD code and response ring
726 */
727 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
728 }
729
730 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
731 {
732 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
733 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
734 struct qla_tgt_mgmt_cmd, se_cmd);
735
736 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
737 mcmd, se_tmr->function, se_tmr->response);
738 /*
739 * Do translation between TCM TM response codes and
740 * QLA2xxx FC TM response codes.
741 */
742 switch (se_tmr->response) {
743 case TMR_FUNCTION_COMPLETE:
744 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
745 break;
746 case TMR_TASK_DOES_NOT_EXIST:
747 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
748 break;
749 case TMR_FUNCTION_REJECTED:
750 mcmd->fc_tm_rsp = FC_TM_REJECT;
751 break;
752 case TMR_LUN_DOES_NOT_EXIST:
753 default:
754 mcmd->fc_tm_rsp = FC_TM_FAILED;
755 break;
756 }
757 /*
758 * Queue the TM response to QLA2xxx LLD to build a
759 * CTIO response packet.
760 */
761 qlt_xmit_tm_rsp(mcmd);
762 }
763
764 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
765 {
766 struct qla_tgt_cmd *cmd = container_of(se_cmd,
767 struct qla_tgt_cmd, se_cmd);
768 struct scsi_qla_host *vha = cmd->vha;
769 struct qla_hw_data *ha = vha->hw;
770
771 if (!cmd->sg_mapped)
772 return;
773
774 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
775 cmd->sg_mapped = 0;
776 }
777
778 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
779 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
780 /*
781 * Expected to be called with struct qla_hw_data->hardware_lock held
782 */
783 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
784 {
785 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
786 struct se_portal_group *se_tpg = se_nacl->se_tpg;
787 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
788 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
789 struct tcm_qla2xxx_lport, lport_wwn);
790 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
791 struct tcm_qla2xxx_nacl, se_node_acl);
792 void *node;
793
794 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
795
796 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
797 if (WARN_ON(node && (node != se_nacl))) {
798 /*
799 * The nacl no longer matches what we think it should be.
800 * Most likely a new dynamic acl has been added while
801 * someone dropped the hardware lock. It clearly is a
802 * bug elsewhere, but this bit can't make things worse.
803 */
804 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
805 node, GFP_ATOMIC);
806 }
807
808 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
809 se_nacl, nacl->nport_wwnn, nacl->nport_id);
810 /*
811 * Now clear the se_nacl and session pointers from our HW lport lookup
812 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
813 *
814 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
815 * target_wait_for_sess_cmds() before the session waits for outstanding
816 * I/O to complete, to avoid a race between session shutdown execution
817 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
818 */
819 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
820 }
821
822 static void tcm_qla2xxx_release_session(struct kref *kref)
823 {
824 struct se_session *se_sess = container_of(kref,
825 struct se_session, sess_kref);
826
827 qlt_unreg_sess(se_sess->fabric_sess_ptr);
828 }
829
830 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
831 {
832 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
833 struct qla_hw_data *ha = sess->vha->hw;
834 unsigned long flags;
835
836 spin_lock_irqsave(&ha->hardware_lock, flags);
837 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
838 spin_unlock_irqrestore(&ha->hardware_lock, flags);
839 }
840
841 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
842 {
843 if (!sess)
844 return;
845
846 assert_spin_locked(&sess->vha->hw->hardware_lock);
847 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
848 }
849
850 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
851 {
852 assert_spin_locked(&sess->vha->hw->hardware_lock);
853 target_sess_cmd_list_set_waiting(sess->se_sess);
854 }
855
856 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
857 struct se_portal_group *se_tpg,
858 struct config_group *group,
859 const char *name)
860 {
861 struct se_node_acl *se_nacl, *se_nacl_new;
862 struct tcm_qla2xxx_nacl *nacl;
863 u64 wwnn;
864 u32 qla2xxx_nexus_depth;
865
866 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
867 return ERR_PTR(-EINVAL);
868
869 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
870 if (!se_nacl_new)
871 return ERR_PTR(-ENOMEM);
872 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
873 qla2xxx_nexus_depth = 1;
874
875 /*
876 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
877 * when converting a NodeACL from demo mode -> explict
878 */
879 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
880 name, qla2xxx_nexus_depth);
881 if (IS_ERR(se_nacl)) {
882 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
883 return se_nacl;
884 }
885 /*
886 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
887 */
888 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
889 nacl->nport_wwnn = wwnn;
890 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
891
892 return se_nacl;
893 }
894
895 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
896 {
897 struct se_portal_group *se_tpg = se_acl->se_tpg;
898 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
899 struct tcm_qla2xxx_nacl, se_node_acl);
900
901 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
902 kfree(nacl);
903 }
904
905 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
906
907 #define DEF_QLA_TPG_ATTRIB(name) \
908 \
909 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
910 struct se_portal_group *se_tpg, \
911 char *page) \
912 { \
913 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
914 struct tcm_qla2xxx_tpg, se_tpg); \
915 \
916 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
917 } \
918 \
919 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
920 struct se_portal_group *se_tpg, \
921 const char *page, \
922 size_t count) \
923 { \
924 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
925 struct tcm_qla2xxx_tpg, se_tpg); \
926 unsigned long val; \
927 int ret; \
928 \
929 ret = kstrtoul(page, 0, &val); \
930 if (ret < 0) { \
931 pr_err("kstrtoul() failed with" \
932 " ret: %d\n", ret); \
933 return -EINVAL; \
934 } \
935 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
936 \
937 return (!ret) ? count : -EINVAL; \
938 }
939
940 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
941 \
942 static int tcm_qla2xxx_set_attrib_##_name( \
943 struct tcm_qla2xxx_tpg *tpg, \
944 unsigned long val) \
945 { \
946 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
947 \
948 if ((val != 0) && (val != 1)) { \
949 pr_err("Illegal boolean value %lu\n", val); \
950 return -EINVAL; \
951 } \
952 \
953 a->_name = val; \
954 return 0; \
955 }
956
957 #define QLA_TPG_ATTR(_name, _mode) \
958 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
959
960 /*
961 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
962 */
963 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
964 DEF_QLA_TPG_ATTRIB(generate_node_acls);
965 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
966
967 /*
968 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
969 */
970 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
971 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
972 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
973
974 /*
975 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
976 */
977 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
978 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
979 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
980
981 /*
982 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
983 */
984 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
985 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
986 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
987
988 /*
989 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
990 */
991 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
992 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
993 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
994
995 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
996 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
997 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
998 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
999 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
1000 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
1001 NULL,
1002 };
1003
1004 /* End items for tcm_qla2xxx_tpg_attrib_cit */
1005
1006 static ssize_t tcm_qla2xxx_tpg_show_enable(
1007 struct se_portal_group *se_tpg,
1008 char *page)
1009 {
1010 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1011 struct tcm_qla2xxx_tpg, se_tpg);
1012
1013 return snprintf(page, PAGE_SIZE, "%d\n",
1014 atomic_read(&tpg->lport_tpg_enabled));
1015 }
1016
1017 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
1018 {
1019 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1020 struct tcm_qla2xxx_tpg, tpg_base_work);
1021 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1022 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1023
1024 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
1025 atomic_set(&base_tpg->lport_tpg_enabled, 1);
1026 qlt_enable_vha(base_vha);
1027 }
1028 complete(&base_tpg->tpg_base_comp);
1029 }
1030
1031 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
1032 {
1033 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1034 struct tcm_qla2xxx_tpg, tpg_base_work);
1035 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1036 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1037
1038 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
1039 atomic_set(&base_tpg->lport_tpg_enabled, 0);
1040 target_undepend_item(&se_tpg->tpg_group.cg_item);
1041 }
1042 complete(&base_tpg->tpg_base_comp);
1043 }
1044
1045 static ssize_t tcm_qla2xxx_tpg_store_enable(
1046 struct se_portal_group *se_tpg,
1047 const char *page,
1048 size_t count)
1049 {
1050 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1051 struct tcm_qla2xxx_tpg, se_tpg);
1052 unsigned long op;
1053 int rc;
1054
1055 rc = kstrtoul(page, 0, &op);
1056 if (rc < 0) {
1057 pr_err("kstrtoul() returned %d\n", rc);
1058 return -EINVAL;
1059 }
1060 if ((op != 1) && (op != 0)) {
1061 pr_err("Illegal value for tpg_enable: %lu\n", op);
1062 return -EINVAL;
1063 }
1064 if (op) {
1065 if (atomic_read(&tpg->lport_tpg_enabled))
1066 return -EEXIST;
1067
1068 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
1069 } else {
1070 if (!atomic_read(&tpg->lport_tpg_enabled))
1071 return count;
1072
1073 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
1074 }
1075 init_completion(&tpg->tpg_base_comp);
1076 schedule_work(&tpg->tpg_base_work);
1077 wait_for_completion(&tpg->tpg_base_comp);
1078
1079 if (op) {
1080 if (!atomic_read(&tpg->lport_tpg_enabled))
1081 return -ENODEV;
1082 } else {
1083 if (atomic_read(&tpg->lport_tpg_enabled))
1084 return -EPERM;
1085 }
1086 return count;
1087 }
1088
1089 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1090
1091 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
1092 struct se_portal_group *se_tpg,
1093 char *page)
1094 {
1095 return target_show_dynamic_sessions(se_tpg, page);
1096 }
1097
1098 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
1099
1100 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
1101 struct se_portal_group *se_tpg,
1102 const char *page,
1103 size_t count)
1104 {
1105 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1106 struct tcm_qla2xxx_tpg, se_tpg);
1107 unsigned long val;
1108 int ret = kstrtoul(page, 0, &val);
1109
1110 if (ret) {
1111 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
1112 return ret;
1113 }
1114 if (val != 0 && val != 1 && val != 3) {
1115 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
1116 return -EINVAL;
1117 }
1118 tpg->tpg_attrib.fabric_prot_type = val;
1119
1120 return count;
1121 }
1122
1123 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
1124 struct se_portal_group *se_tpg,
1125 char *page)
1126 {
1127 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1128 struct tcm_qla2xxx_tpg, se_tpg);
1129
1130 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1131 }
1132 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
1133
1134 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1135 &tcm_qla2xxx_tpg_enable.attr,
1136 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
1137 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
1138 NULL,
1139 };
1140
1141 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1142 struct se_wwn *wwn,
1143 struct config_group *group,
1144 const char *name)
1145 {
1146 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1147 struct tcm_qla2xxx_lport, lport_wwn);
1148 struct tcm_qla2xxx_tpg *tpg;
1149 unsigned long tpgt;
1150 int ret;
1151
1152 if (strstr(name, "tpgt_") != name)
1153 return ERR_PTR(-EINVAL);
1154 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1155 return ERR_PTR(-EINVAL);
1156
1157 if ((tpgt != 1)) {
1158 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1159 return ERR_PTR(-ENOSYS);
1160 }
1161
1162 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1163 if (!tpg) {
1164 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1165 return ERR_PTR(-ENOMEM);
1166 }
1167 tpg->lport = lport;
1168 tpg->lport_tpgt = tpgt;
1169 /*
1170 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1171 * NodeACLs
1172 */
1173 tpg->tpg_attrib.generate_node_acls = 1;
1174 tpg->tpg_attrib.demo_mode_write_protect = 1;
1175 tpg->tpg_attrib.cache_dynamic_acls = 1;
1176 tpg->tpg_attrib.demo_mode_login_only = 1;
1177
1178 ret = core_tpg_register(&tcm_qla2xxx_ops, wwn,
1179 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1180 if (ret < 0) {
1181 kfree(tpg);
1182 return NULL;
1183 }
1184
1185 lport->tpg_1 = tpg;
1186
1187 return &tpg->se_tpg;
1188 }
1189
1190 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1191 {
1192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1193 struct tcm_qla2xxx_tpg, se_tpg);
1194 struct tcm_qla2xxx_lport *lport = tpg->lport;
1195 struct scsi_qla_host *vha = lport->qla_vha;
1196 /*
1197 * Call into qla2x_target.c LLD logic to shutdown the active
1198 * FC Nexuses and disable target mode operation for this qla_hw_data
1199 */
1200 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1201 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1202
1203 core_tpg_deregister(se_tpg);
1204 /*
1205 * Clear local TPG=1 pointer for non NPIV mode.
1206 */
1207 lport->tpg_1 = NULL;
1208 kfree(tpg);
1209 }
1210
1211 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1212 struct se_portal_group *se_tpg,
1213 char *page)
1214 {
1215 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1216 }
1217
1218 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1219 struct se_portal_group *se_tpg,
1220 const char *page,
1221 size_t count)
1222 {
1223 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1224 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1225 struct tcm_qla2xxx_lport, lport_wwn);
1226 struct scsi_qla_host *vha = lport->qla_vha;
1227 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1228 struct tcm_qla2xxx_tpg, se_tpg);
1229 unsigned long op;
1230 int rc;
1231
1232 rc = kstrtoul(page, 0, &op);
1233 if (rc < 0) {
1234 pr_err("kstrtoul() returned %d\n", rc);
1235 return -EINVAL;
1236 }
1237 if ((op != 1) && (op != 0)) {
1238 pr_err("Illegal value for tpg_enable: %lu\n", op);
1239 return -EINVAL;
1240 }
1241 if (op) {
1242 if (atomic_read(&tpg->lport_tpg_enabled))
1243 return -EEXIST;
1244
1245 atomic_set(&tpg->lport_tpg_enabled, 1);
1246 qlt_enable_vha(vha);
1247 } else {
1248 if (!atomic_read(&tpg->lport_tpg_enabled))
1249 return count;
1250
1251 atomic_set(&tpg->lport_tpg_enabled, 0);
1252 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1253 }
1254
1255 return count;
1256 }
1257
1258 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1259
1260 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1261 &tcm_qla2xxx_npiv_tpg_enable.attr,
1262 NULL,
1263 };
1264
1265 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1266 struct se_wwn *wwn,
1267 struct config_group *group,
1268 const char *name)
1269 {
1270 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1271 struct tcm_qla2xxx_lport, lport_wwn);
1272 struct tcm_qla2xxx_tpg *tpg;
1273 unsigned long tpgt;
1274 int ret;
1275
1276 if (strstr(name, "tpgt_") != name)
1277 return ERR_PTR(-EINVAL);
1278 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1279 return ERR_PTR(-EINVAL);
1280
1281 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1282 if (!tpg) {
1283 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1284 return ERR_PTR(-ENOMEM);
1285 }
1286 tpg->lport = lport;
1287 tpg->lport_tpgt = tpgt;
1288
1289 /*
1290 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1291 * NodeACLs
1292 */
1293 tpg->tpg_attrib.generate_node_acls = 1;
1294 tpg->tpg_attrib.demo_mode_write_protect = 1;
1295 tpg->tpg_attrib.cache_dynamic_acls = 1;
1296 tpg->tpg_attrib.demo_mode_login_only = 1;
1297
1298 ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn,
1299 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1300 if (ret < 0) {
1301 kfree(tpg);
1302 return NULL;
1303 }
1304 lport->tpg_1 = tpg;
1305 return &tpg->se_tpg;
1306 }
1307
1308 /*
1309 * Expected to be called with struct qla_hw_data->hardware_lock held
1310 */
1311 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1312 scsi_qla_host_t *vha,
1313 const uint8_t *s_id)
1314 {
1315 struct tcm_qla2xxx_lport *lport;
1316 struct se_node_acl *se_nacl;
1317 struct tcm_qla2xxx_nacl *nacl;
1318 u32 key;
1319
1320 lport = vha->vha_tgt.target_lport_ptr;
1321 if (!lport) {
1322 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1323 dump_stack();
1324 return NULL;
1325 }
1326
1327 key = (((unsigned long)s_id[0] << 16) |
1328 ((unsigned long)s_id[1] << 8) |
1329 (unsigned long)s_id[2]);
1330 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1331
1332 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1333 if (!se_nacl) {
1334 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1335 return NULL;
1336 }
1337 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1338 se_nacl, se_nacl->initiatorname);
1339
1340 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1341 if (!nacl->qla_tgt_sess) {
1342 pr_err("Unable to locate struct qla_tgt_sess\n");
1343 return NULL;
1344 }
1345
1346 return nacl->qla_tgt_sess;
1347 }
1348
1349 /*
1350 * Expected to be called with struct qla_hw_data->hardware_lock held
1351 */
1352 static void tcm_qla2xxx_set_sess_by_s_id(
1353 struct tcm_qla2xxx_lport *lport,
1354 struct se_node_acl *new_se_nacl,
1355 struct tcm_qla2xxx_nacl *nacl,
1356 struct se_session *se_sess,
1357 struct qla_tgt_sess *qla_tgt_sess,
1358 uint8_t *s_id)
1359 {
1360 u32 key;
1361 void *slot;
1362 int rc;
1363
1364 key = (((unsigned long)s_id[0] << 16) |
1365 ((unsigned long)s_id[1] << 8) |
1366 (unsigned long)s_id[2]);
1367 pr_debug("set_sess_by_s_id: %06x\n", key);
1368
1369 slot = btree_lookup32(&lport->lport_fcport_map, key);
1370 if (!slot) {
1371 if (new_se_nacl) {
1372 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1373 nacl->nport_id = key;
1374 rc = btree_insert32(&lport->lport_fcport_map, key,
1375 new_se_nacl, GFP_ATOMIC);
1376 if (rc)
1377 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1378 (int)key);
1379 } else {
1380 pr_debug("Wiping nonexisting fc_port entry\n");
1381 }
1382
1383 qla_tgt_sess->se_sess = se_sess;
1384 nacl->qla_tgt_sess = qla_tgt_sess;
1385 return;
1386 }
1387
1388 if (nacl->qla_tgt_sess) {
1389 if (new_se_nacl == NULL) {
1390 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1391 btree_remove32(&lport->lport_fcport_map, key);
1392 nacl->qla_tgt_sess = NULL;
1393 return;
1394 }
1395 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1396 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1397 qla_tgt_sess->se_sess = se_sess;
1398 nacl->qla_tgt_sess = qla_tgt_sess;
1399 return;
1400 }
1401
1402 if (new_se_nacl == NULL) {
1403 pr_debug("Clearing existing fc_port entry\n");
1404 btree_remove32(&lport->lport_fcport_map, key);
1405 return;
1406 }
1407
1408 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1409 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1410 qla_tgt_sess->se_sess = se_sess;
1411 nacl->qla_tgt_sess = qla_tgt_sess;
1412
1413 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1414 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1415 }
1416
1417 /*
1418 * Expected to be called with struct qla_hw_data->hardware_lock held
1419 */
1420 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1421 scsi_qla_host_t *vha,
1422 const uint16_t loop_id)
1423 {
1424 struct tcm_qla2xxx_lport *lport;
1425 struct se_node_acl *se_nacl;
1426 struct tcm_qla2xxx_nacl *nacl;
1427 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1428
1429 lport = vha->vha_tgt.target_lport_ptr;
1430 if (!lport) {
1431 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1432 dump_stack();
1433 return NULL;
1434 }
1435
1436 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1437
1438 fc_loopid = lport->lport_loopid_map + loop_id;
1439 se_nacl = fc_loopid->se_nacl;
1440 if (!se_nacl) {
1441 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1442 loop_id);
1443 return NULL;
1444 }
1445
1446 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1447
1448 if (!nacl->qla_tgt_sess) {
1449 pr_err("Unable to locate struct qla_tgt_sess\n");
1450 return NULL;
1451 }
1452
1453 return nacl->qla_tgt_sess;
1454 }
1455
1456 /*
1457 * Expected to be called with struct qla_hw_data->hardware_lock held
1458 */
1459 static void tcm_qla2xxx_set_sess_by_loop_id(
1460 struct tcm_qla2xxx_lport *lport,
1461 struct se_node_acl *new_se_nacl,
1462 struct tcm_qla2xxx_nacl *nacl,
1463 struct se_session *se_sess,
1464 struct qla_tgt_sess *qla_tgt_sess,
1465 uint16_t loop_id)
1466 {
1467 struct se_node_acl *saved_nacl;
1468 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1469
1470 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1471
1472 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1473 lport->lport_loopid_map)[loop_id];
1474
1475 saved_nacl = fc_loopid->se_nacl;
1476 if (!saved_nacl) {
1477 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1478 fc_loopid->se_nacl = new_se_nacl;
1479 if (qla_tgt_sess->se_sess != se_sess)
1480 qla_tgt_sess->se_sess = se_sess;
1481 if (nacl->qla_tgt_sess != qla_tgt_sess)
1482 nacl->qla_tgt_sess = qla_tgt_sess;
1483 return;
1484 }
1485
1486 if (nacl->qla_tgt_sess) {
1487 if (new_se_nacl == NULL) {
1488 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1489 fc_loopid->se_nacl = NULL;
1490 nacl->qla_tgt_sess = NULL;
1491 return;
1492 }
1493
1494 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1495 fc_loopid->se_nacl = new_se_nacl;
1496 if (qla_tgt_sess->se_sess != se_sess)
1497 qla_tgt_sess->se_sess = se_sess;
1498 if (nacl->qla_tgt_sess != qla_tgt_sess)
1499 nacl->qla_tgt_sess = qla_tgt_sess;
1500 return;
1501 }
1502
1503 if (new_se_nacl == NULL) {
1504 pr_debug("Clearing fc_loopid->se_nacl\n");
1505 fc_loopid->se_nacl = NULL;
1506 return;
1507 }
1508
1509 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1510 fc_loopid->se_nacl = new_se_nacl;
1511 if (qla_tgt_sess->se_sess != se_sess)
1512 qla_tgt_sess->se_sess = se_sess;
1513 if (nacl->qla_tgt_sess != qla_tgt_sess)
1514 nacl->qla_tgt_sess = qla_tgt_sess;
1515
1516 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1517 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1518 }
1519
1520 /*
1521 * Should always be called with qla_hw_data->hardware_lock held.
1522 */
1523 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1524 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1525 {
1526 struct se_session *se_sess = sess->se_sess;
1527 unsigned char be_sid[3];
1528
1529 be_sid[0] = sess->s_id.b.domain;
1530 be_sid[1] = sess->s_id.b.area;
1531 be_sid[2] = sess->s_id.b.al_pa;
1532
1533 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1534 sess, be_sid);
1535 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1536 sess, sess->loop_id);
1537 }
1538
1539 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1540 {
1541 struct qla_tgt *tgt = sess->tgt;
1542 struct qla_hw_data *ha = tgt->ha;
1543 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1544 struct se_session *se_sess;
1545 struct se_node_acl *se_nacl;
1546 struct tcm_qla2xxx_lport *lport;
1547 struct tcm_qla2xxx_nacl *nacl;
1548
1549 BUG_ON(in_interrupt());
1550
1551 se_sess = sess->se_sess;
1552 if (!se_sess) {
1553 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1554 dump_stack();
1555 return;
1556 }
1557 se_nacl = se_sess->se_node_acl;
1558 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1559
1560 lport = vha->vha_tgt.target_lport_ptr;
1561 if (!lport) {
1562 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1563 dump_stack();
1564 return;
1565 }
1566 target_wait_for_sess_cmds(se_sess);
1567
1568 transport_deregister_session_configfs(sess->se_sess);
1569 transport_deregister_session(sess->se_sess);
1570 }
1571
1572 /*
1573 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1574 * to locate struct se_node_acl
1575 */
1576 static int tcm_qla2xxx_check_initiator_node_acl(
1577 scsi_qla_host_t *vha,
1578 unsigned char *fc_wwpn,
1579 void *qla_tgt_sess,
1580 uint8_t *s_id,
1581 uint16_t loop_id)
1582 {
1583 struct qla_hw_data *ha = vha->hw;
1584 struct tcm_qla2xxx_lport *lport;
1585 struct tcm_qla2xxx_tpg *tpg;
1586 struct tcm_qla2xxx_nacl *nacl;
1587 struct se_portal_group *se_tpg;
1588 struct se_node_acl *se_nacl;
1589 struct se_session *se_sess;
1590 struct qla_tgt_sess *sess = qla_tgt_sess;
1591 unsigned char port_name[36];
1592 unsigned long flags;
1593 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1594 TCM_QLA2XXX_DEFAULT_TAGS;
1595
1596 lport = vha->vha_tgt.target_lport_ptr;
1597 if (!lport) {
1598 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1599 dump_stack();
1600 return -EINVAL;
1601 }
1602 /*
1603 * Locate the TPG=1 reference..
1604 */
1605 tpg = lport->tpg_1;
1606 if (!tpg) {
1607 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1608 return -EINVAL;
1609 }
1610 se_tpg = &tpg->se_tpg;
1611
1612 se_sess = transport_init_session_tags(num_tags,
1613 sizeof(struct qla_tgt_cmd),
1614 TARGET_PROT_ALL);
1615 if (IS_ERR(se_sess)) {
1616 pr_err("Unable to initialize struct se_session\n");
1617 return PTR_ERR(se_sess);
1618 }
1619 /*
1620 * Format the FCP Initiator port_name into colon seperated values to
1621 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1622 */
1623 memset(&port_name, 0, 36);
1624 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1625 /*
1626 * Locate our struct se_node_acl either from an explict NodeACL created
1627 * via ConfigFS, or via running in TPG demo mode.
1628 */
1629 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1630 port_name);
1631 if (!se_sess->se_node_acl) {
1632 transport_free_session(se_sess);
1633 return -EINVAL;
1634 }
1635 se_nacl = se_sess->se_node_acl;
1636 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1637 /*
1638 * And now setup the new se_nacl and session pointers into our HW lport
1639 * mappings for fabric S_ID and LOOP_ID.
1640 */
1641 spin_lock_irqsave(&ha->hardware_lock, flags);
1642 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1643 qla_tgt_sess, s_id);
1644 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1645 qla_tgt_sess, loop_id);
1646 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1647 /*
1648 * Finally register the new FC Nexus with TCM
1649 */
1650 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1651
1652 return 0;
1653 }
1654
1655 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1656 uint16_t loop_id, bool conf_compl_supported)
1657 {
1658 struct qla_tgt *tgt = sess->tgt;
1659 struct qla_hw_data *ha = tgt->ha;
1660 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1661 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1662 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1663 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1664 struct tcm_qla2xxx_nacl, se_node_acl);
1665 u32 key;
1666
1667
1668 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1669 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1670 sess, sess->port_name,
1671 sess->loop_id, loop_id, sess->s_id.b.domain,
1672 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1673 s_id.b.area, s_id.b.al_pa);
1674
1675 if (sess->loop_id != loop_id) {
1676 /*
1677 * Because we can shuffle loop IDs around and we
1678 * update different sessions non-atomically, we might
1679 * have overwritten this session's old loop ID
1680 * already, and we might end up overwriting some other
1681 * session that will be updated later. So we have to
1682 * be extra careful and we can't warn about those things...
1683 */
1684 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1685 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1686
1687 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1688
1689 sess->loop_id = loop_id;
1690 }
1691
1692 if (sess->s_id.b24 != s_id.b24) {
1693 key = (((u32) sess->s_id.b.domain << 16) |
1694 ((u32) sess->s_id.b.area << 8) |
1695 ((u32) sess->s_id.b.al_pa));
1696
1697 if (btree_lookup32(&lport->lport_fcport_map, key))
1698 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1699 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1700 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1701 else
1702 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1703 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1704
1705 key = (((u32) s_id.b.domain << 16) |
1706 ((u32) s_id.b.area << 8) |
1707 ((u32) s_id.b.al_pa));
1708
1709 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1710 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1711 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1712 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1713 } else {
1714 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1715 }
1716
1717 sess->s_id = s_id;
1718 nacl->nport_id = key;
1719 }
1720
1721 sess->conf_compl_supported = conf_compl_supported;
1722 }
1723
1724 /*
1725 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1726 */
1727 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1728 .handle_cmd = tcm_qla2xxx_handle_cmd,
1729 .handle_data = tcm_qla2xxx_handle_data,
1730 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1731 .handle_tmr = tcm_qla2xxx_handle_tmr,
1732 .free_cmd = tcm_qla2xxx_free_cmd,
1733 .free_mcmd = tcm_qla2xxx_free_mcmd,
1734 .free_session = tcm_qla2xxx_free_session,
1735 .update_sess = tcm_qla2xxx_update_sess,
1736 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1737 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1738 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1739 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1740 .put_sess = tcm_qla2xxx_put_sess,
1741 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1742 };
1743
1744 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1745 {
1746 int rc;
1747
1748 rc = btree_init32(&lport->lport_fcport_map);
1749 if (rc) {
1750 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1751 return rc;
1752 }
1753
1754 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1755 65536);
1756 if (!lport->lport_loopid_map) {
1757 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1758 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1759 btree_destroy32(&lport->lport_fcport_map);
1760 return -ENOMEM;
1761 }
1762 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1763 * 65536);
1764 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1765 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1766 return 0;
1767 }
1768
1769 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1770 void *target_lport_ptr,
1771 u64 npiv_wwpn, u64 npiv_wwnn)
1772 {
1773 struct qla_hw_data *ha = vha->hw;
1774 struct tcm_qla2xxx_lport *lport =
1775 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1776 /*
1777 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1778 */
1779 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1780 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1781 lport->qla_vha = vha;
1782
1783 return 0;
1784 }
1785
1786 static struct se_wwn *tcm_qla2xxx_make_lport(
1787 struct target_fabric_configfs *tf,
1788 struct config_group *group,
1789 const char *name)
1790 {
1791 struct tcm_qla2xxx_lport *lport;
1792 u64 wwpn;
1793 int ret = -ENODEV;
1794
1795 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1796 return ERR_PTR(-EINVAL);
1797
1798 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1799 if (!lport) {
1800 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1801 return ERR_PTR(-ENOMEM);
1802 }
1803 lport->lport_wwpn = wwpn;
1804 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1805 wwpn);
1806 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1807
1808 ret = tcm_qla2xxx_init_lport(lport);
1809 if (ret != 0)
1810 goto out;
1811
1812 ret = qlt_lport_register(lport, wwpn, 0, 0,
1813 tcm_qla2xxx_lport_register_cb);
1814 if (ret != 0)
1815 goto out_lport;
1816
1817 return &lport->lport_wwn;
1818 out_lport:
1819 vfree(lport->lport_loopid_map);
1820 btree_destroy32(&lport->lport_fcport_map);
1821 out:
1822 kfree(lport);
1823 return ERR_PTR(ret);
1824 }
1825
1826 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1827 {
1828 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1829 struct tcm_qla2xxx_lport, lport_wwn);
1830 struct scsi_qla_host *vha = lport->qla_vha;
1831 struct se_node_acl *node;
1832 u32 key = 0;
1833
1834 /*
1835 * Call into qla2x_target.c LLD logic to complete the
1836 * shutdown of struct qla_tgt after the call to
1837 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1838 */
1839 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1840 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1841
1842 qlt_lport_deregister(vha);
1843
1844 vfree(lport->lport_loopid_map);
1845 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1846 btree_remove32(&lport->lport_fcport_map, key);
1847 btree_destroy32(&lport->lport_fcport_map);
1848 kfree(lport);
1849 }
1850
1851 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1852 void *target_lport_ptr,
1853 u64 npiv_wwpn, u64 npiv_wwnn)
1854 {
1855 struct fc_vport *vport;
1856 struct Scsi_Host *sh = base_vha->host;
1857 struct scsi_qla_host *npiv_vha;
1858 struct tcm_qla2xxx_lport *lport =
1859 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1860 struct tcm_qla2xxx_lport *base_lport =
1861 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1862 struct tcm_qla2xxx_tpg *base_tpg;
1863 struct fc_vport_identifiers vport_id;
1864
1865 if (!qla_tgt_mode_enabled(base_vha)) {
1866 pr_err("qla2xxx base_vha not enabled for target mode\n");
1867 return -EPERM;
1868 }
1869
1870 if (!base_lport || !base_lport->tpg_1 ||
1871 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1872 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1873 return -EPERM;
1874 }
1875 base_tpg = base_lport->tpg_1;
1876
1877 memset(&vport_id, 0, sizeof(vport_id));
1878 vport_id.port_name = npiv_wwpn;
1879 vport_id.node_name = npiv_wwnn;
1880 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1881 vport_id.vport_type = FC_PORTTYPE_NPIV;
1882 vport_id.disable = false;
1883
1884 vport = fc_vport_create(sh, 0, &vport_id);
1885 if (!vport) {
1886 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1887 return -ENODEV;
1888 }
1889 /*
1890 * Setup local pointer to NPIV vhba + target_lport_ptr
1891 */
1892 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1893 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1894 lport->qla_vha = npiv_vha;
1895 scsi_host_get(npiv_vha->host);
1896 return 0;
1897 }
1898
1899
1900 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1901 struct target_fabric_configfs *tf,
1902 struct config_group *group,
1903 const char *name)
1904 {
1905 struct tcm_qla2xxx_lport *lport;
1906 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1907 char *p, tmp[128];
1908 int ret;
1909
1910 snprintf(tmp, 128, "%s", name);
1911
1912 p = strchr(tmp, '@');
1913 if (!p) {
1914 pr_err("Unable to locate NPIV '@' seperator\n");
1915 return ERR_PTR(-EINVAL);
1916 }
1917 *p++ = '\0';
1918
1919 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1920 return ERR_PTR(-EINVAL);
1921
1922 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1923 &npiv_wwpn, &npiv_wwnn) < 0)
1924 return ERR_PTR(-EINVAL);
1925
1926 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1927 if (!lport) {
1928 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1929 return ERR_PTR(-ENOMEM);
1930 }
1931 lport->lport_npiv_wwpn = npiv_wwpn;
1932 lport->lport_npiv_wwnn = npiv_wwnn;
1933 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1934
1935 ret = tcm_qla2xxx_init_lport(lport);
1936 if (ret != 0)
1937 goto out;
1938
1939 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1940 tcm_qla2xxx_lport_register_npiv_cb);
1941 if (ret != 0)
1942 goto out_lport;
1943
1944 return &lport->lport_wwn;
1945 out_lport:
1946 vfree(lport->lport_loopid_map);
1947 btree_destroy32(&lport->lport_fcport_map);
1948 out:
1949 kfree(lport);
1950 return ERR_PTR(ret);
1951 }
1952
1953 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1954 {
1955 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1956 struct tcm_qla2xxx_lport, lport_wwn);
1957 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1958 struct qla_hw_data *ha = npiv_vha->hw;
1959 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1960
1961 scsi_host_put(npiv_vha->host);
1962 /*
1963 * Notify libfc that we want to release the vha->fc_vport
1964 */
1965 fc_vport_terminate(npiv_vha->fc_vport);
1966 scsi_host_put(base_vha->host);
1967 kfree(lport);
1968 }
1969
1970
1971 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1972 struct target_fabric_configfs *tf,
1973 char *page)
1974 {
1975 return sprintf(page,
1976 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1977 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1978 utsname()->machine);
1979 }
1980
1981 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1982
1983 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1984 &tcm_qla2xxx_wwn_version.attr,
1985 NULL,
1986 };
1987
1988 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1989 .module = THIS_MODULE,
1990 .name = "qla2xxx",
1991 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1992 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1993 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1994 .tpg_get_tag = tcm_qla2xxx_get_tag,
1995 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1996 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1997 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1998 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1999 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
2000 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
2001 .tpg_check_demo_mode_write_protect =
2002 tcm_qla2xxx_check_demo_write_protect,
2003 .tpg_check_prod_mode_write_protect =
2004 tcm_qla2xxx_check_prod_write_protect,
2005 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
2006 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
2007 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
2008 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
2009 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
2010 .check_stop_free = tcm_qla2xxx_check_stop_free,
2011 .release_cmd = tcm_qla2xxx_release_cmd,
2012 .put_session = tcm_qla2xxx_put_session,
2013 .shutdown_session = tcm_qla2xxx_shutdown_session,
2014 .close_session = tcm_qla2xxx_close_session,
2015 .sess_get_index = tcm_qla2xxx_sess_get_index,
2016 .sess_get_initiator_sid = NULL,
2017 .write_pending = tcm_qla2xxx_write_pending,
2018 .write_pending_status = tcm_qla2xxx_write_pending_status,
2019 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
2020 .get_task_tag = tcm_qla2xxx_get_task_tag,
2021 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
2022 .queue_data_in = tcm_qla2xxx_queue_data_in,
2023 .queue_status = tcm_qla2xxx_queue_status,
2024 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
2025 .aborted_task = tcm_qla2xxx_aborted_task,
2026 /*
2027 * Setup function pointers for generic logic in
2028 * target_core_fabric_configfs.c
2029 */
2030 .fabric_make_wwn = tcm_qla2xxx_make_lport,
2031 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
2032 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
2033 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
2034 .fabric_post_link = NULL,
2035 .fabric_pre_unlink = NULL,
2036 .fabric_make_np = NULL,
2037 .fabric_drop_np = NULL,
2038 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
2039 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
2040
2041 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
2042 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
2043 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
2044 };
2045
2046 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
2047 .module = THIS_MODULE,
2048 .name = "qla2xxx_npiv",
2049 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
2050 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
2051 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
2052 .tpg_get_tag = tcm_qla2xxx_get_tag,
2053 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
2054 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
2055 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
2056 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
2057 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
2058 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
2059 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
2060 .tpg_check_prod_mode_write_protect =
2061 tcm_qla2xxx_check_prod_write_protect,
2062 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
2063 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
2064 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
2065 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
2066 .check_stop_free = tcm_qla2xxx_check_stop_free,
2067 .release_cmd = tcm_qla2xxx_release_cmd,
2068 .put_session = tcm_qla2xxx_put_session,
2069 .shutdown_session = tcm_qla2xxx_shutdown_session,
2070 .close_session = tcm_qla2xxx_close_session,
2071 .sess_get_index = tcm_qla2xxx_sess_get_index,
2072 .sess_get_initiator_sid = NULL,
2073 .write_pending = tcm_qla2xxx_write_pending,
2074 .write_pending_status = tcm_qla2xxx_write_pending_status,
2075 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
2076 .get_task_tag = tcm_qla2xxx_get_task_tag,
2077 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
2078 .queue_data_in = tcm_qla2xxx_queue_data_in,
2079 .queue_status = tcm_qla2xxx_queue_status,
2080 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
2081 .aborted_task = tcm_qla2xxx_aborted_task,
2082 /*
2083 * Setup function pointers for generic logic in
2084 * target_core_fabric_configfs.c
2085 */
2086 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
2087 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
2088 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
2089 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
2090 .fabric_post_link = NULL,
2091 .fabric_pre_unlink = NULL,
2092 .fabric_make_np = NULL,
2093 .fabric_drop_np = NULL,
2094 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
2095 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
2096
2097 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
2098 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
2099 };
2100
2101 static int tcm_qla2xxx_register_configfs(void)
2102 {
2103 int ret;
2104
2105 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
2106 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
2107 utsname()->machine);
2108
2109 ret = target_register_template(&tcm_qla2xxx_ops);
2110 if (ret)
2111 return ret;
2112
2113 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
2114 if (ret)
2115 goto out_fabric;
2116
2117 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2118 WQ_MEM_RECLAIM, 0);
2119 if (!tcm_qla2xxx_free_wq) {
2120 ret = -ENOMEM;
2121 goto out_fabric_npiv;
2122 }
2123
2124 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
2125 if (!tcm_qla2xxx_cmd_wq) {
2126 ret = -ENOMEM;
2127 goto out_free_wq;
2128 }
2129
2130 return 0;
2131
2132 out_free_wq:
2133 destroy_workqueue(tcm_qla2xxx_free_wq);
2134 out_fabric_npiv:
2135 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2136 out_fabric:
2137 target_unregister_template(&tcm_qla2xxx_ops);
2138 return ret;
2139 }
2140
2141 static void tcm_qla2xxx_deregister_configfs(void)
2142 {
2143 destroy_workqueue(tcm_qla2xxx_cmd_wq);
2144 destroy_workqueue(tcm_qla2xxx_free_wq);
2145
2146 target_unregister_template(&tcm_qla2xxx_ops);
2147 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2148 }
2149
2150 static int __init tcm_qla2xxx_init(void)
2151 {
2152 int ret;
2153
2154 ret = tcm_qla2xxx_register_configfs();
2155 if (ret < 0)
2156 return ret;
2157
2158 return 0;
2159 }
2160
2161 static void __exit tcm_qla2xxx_exit(void)
2162 {
2163 tcm_qla2xxx_deregister_configfs();
2164 }
2165
2166 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2167 MODULE_LICENSE("GPL");
2168 module_init(tcm_qla2xxx_init);
2169 module_exit(tcm_qla2xxx_exit);