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Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.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 /* Local pointer to allocated TCM configfs fabric module */
57 static struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
58 static struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
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 struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
340 struct se_portal_group *se_tpg)
341 {
342 struct tcm_qla2xxx_nacl *nacl;
343
344 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
345 if (!nacl) {
346 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
347 return NULL;
348 }
349
350 return &nacl->se_node_acl;
351 }
352
353 static void tcm_qla2xxx_release_fabric_acl(
354 struct se_portal_group *se_tpg,
355 struct se_node_acl *se_nacl)
356 {
357 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
358 struct tcm_qla2xxx_nacl, se_node_acl);
359 kfree(nacl);
360 }
361
362 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
363 {
364 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
365 struct tcm_qla2xxx_tpg, se_tpg);
366
367 return tpg->lport_tpgt;
368 }
369
370 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
371 {
372 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
373 struct qla_tgt_mgmt_cmd, free_work);
374
375 transport_generic_free_cmd(&mcmd->se_cmd, 0);
376 }
377
378 /*
379 * Called from qla_target_template->free_mcmd(), and will call
380 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
381 * release callback. qla_hw_data->hardware_lock is expected to be held
382 */
383 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
384 {
385 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
386 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
387 }
388
389 static void tcm_qla2xxx_complete_free(struct work_struct *work)
390 {
391 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
392
393 cmd->cmd_in_wq = 0;
394
395 WARN_ON(cmd->cmd_flags & BIT_16);
396
397 cmd->cmd_flags |= BIT_16;
398 transport_generic_free_cmd(&cmd->se_cmd, 0);
399 }
400
401 /*
402 * Called from qla_target_template->free_cmd(), and will call
403 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
404 * release callback. qla_hw_data->hardware_lock is expected to be held
405 */
406 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
407 {
408 cmd->cmd_in_wq = 1;
409 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
410 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
411 }
412
413 /*
414 * Called from struct target_core_fabric_ops->check_stop_free() context
415 */
416 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
417 {
418 struct qla_tgt_cmd *cmd;
419
420 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
421 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
422 cmd->cmd_flags |= BIT_14;
423 }
424
425 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
426 }
427
428 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
429 * fabric descriptor @se_cmd command to release
430 */
431 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
432 {
433 struct qla_tgt_cmd *cmd;
434
435 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
436 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
437 struct qla_tgt_mgmt_cmd, se_cmd);
438 qlt_free_mcmd(mcmd);
439 return;
440 }
441
442 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
443 qlt_free_cmd(cmd);
444 }
445
446 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
447 {
448 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
449 struct scsi_qla_host *vha;
450 unsigned long flags;
451
452 BUG_ON(!sess);
453 vha = sess->vha;
454
455 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
456 target_sess_cmd_list_set_waiting(se_sess);
457 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
458
459 return 1;
460 }
461
462 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
463 {
464 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
465 struct scsi_qla_host *vha;
466 unsigned long flags;
467
468 BUG_ON(!sess);
469 vha = sess->vha;
470
471 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
472 qlt_unreg_sess(sess);
473 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
474 }
475
476 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
477 {
478 return 0;
479 }
480
481 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
482 {
483 struct qla_tgt_cmd *cmd = container_of(se_cmd,
484 struct qla_tgt_cmd, se_cmd);
485
486 cmd->bufflen = se_cmd->data_length;
487 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
488
489 cmd->sg_cnt = se_cmd->t_data_nents;
490 cmd->sg = se_cmd->t_data_sg;
491
492 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
493 cmd->prot_sg = se_cmd->t_prot_sg;
494 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
495 se_cmd->pi_err = 0;
496
497 /*
498 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
499 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
500 */
501 return qlt_rdy_to_xfer(cmd);
502 }
503
504 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
505 {
506 unsigned long flags;
507 /*
508 * Check for WRITE_PENDING status to determine if we need to wait for
509 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
510 */
511 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
512 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
513 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
514 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
515 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
516 3000);
517 return 0;
518 }
519 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
520
521 return 0;
522 }
523
524 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
525 {
526 return;
527 }
528
529 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
530 {
531 struct qla_tgt_cmd *cmd;
532
533 /* check for task mgmt cmd */
534 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
535 return 0xffffffff;
536
537 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
538
539 return cmd->tag;
540 }
541
542 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
543 {
544 return 0;
545 }
546
547 /*
548 * Called from process context in qla_target.c:qlt_do_work() code
549 */
550 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
551 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
552 int data_dir, int bidi)
553 {
554 struct se_cmd *se_cmd = &cmd->se_cmd;
555 struct se_session *se_sess;
556 struct qla_tgt_sess *sess;
557 int flags = TARGET_SCF_ACK_KREF;
558
559 if (bidi)
560 flags |= TARGET_SCF_BIDI_OP;
561
562 sess = cmd->sess;
563 if (!sess) {
564 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
565 return -EINVAL;
566 }
567
568 se_sess = sess->se_sess;
569 if (!se_sess) {
570 pr_err("Unable to locate active struct se_session\n");
571 return -EINVAL;
572 }
573
574 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
575 cmd->unpacked_lun, data_length, fcp_task_attr,
576 data_dir, flags);
577 }
578
579 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
580 {
581 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
582
583 /*
584 * Ensure that the complete FCP WRITE payload has been received.
585 * Otherwise return an exception via CHECK_CONDITION status.
586 */
587 cmd->cmd_in_wq = 0;
588 cmd->cmd_flags |= BIT_11;
589 if (!cmd->write_data_transferred) {
590 /*
591 * Check if se_cmd has already been aborted via LUN_RESET, and
592 * waiting upon completion in tcm_qla2xxx_write_pending_status()
593 */
594 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
595 complete(&cmd->se_cmd.t_transport_stop_comp);
596 return;
597 }
598
599 if (cmd->se_cmd.pi_err)
600 transport_generic_request_failure(&cmd->se_cmd,
601 cmd->se_cmd.pi_err);
602 else
603 transport_generic_request_failure(&cmd->se_cmd,
604 TCM_CHECK_CONDITION_ABORT_CMD);
605
606 return;
607 }
608
609 return target_execute_cmd(&cmd->se_cmd);
610 }
611
612 /*
613 * Called from qla_target.c:qlt_do_ctio_completion()
614 */
615 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
616 {
617 cmd->cmd_flags |= BIT_10;
618 cmd->cmd_in_wq = 1;
619 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
620 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
621 }
622
623 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
624 {
625 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
626
627 /* take an extra kref to prevent cmd free too early.
628 * need to wait for SCSI status/check condition to
629 * finish responding generate by transport_generic_request_failure.
630 */
631 kref_get(&cmd->se_cmd.cmd_kref);
632 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
633 }
634
635 /*
636 * Called from qla_target.c:qlt_do_ctio_completion()
637 */
638 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
639 {
640 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
641 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
642 }
643
644 /*
645 * Called from qla_target.c:qlt_issue_task_mgmt()
646 */
647 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
648 uint8_t tmr_func, uint32_t tag)
649 {
650 struct qla_tgt_sess *sess = mcmd->sess;
651 struct se_cmd *se_cmd = &mcmd->se_cmd;
652
653 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
654 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
655 }
656
657 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
658 {
659 struct qla_tgt_cmd *cmd = container_of(se_cmd,
660 struct qla_tgt_cmd, se_cmd);
661
662 cmd->cmd_flags |= BIT_4;
663 cmd->bufflen = se_cmd->data_length;
664 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
665 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
666
667 cmd->sg_cnt = se_cmd->t_data_nents;
668 cmd->sg = se_cmd->t_data_sg;
669 cmd->offset = 0;
670 cmd->cmd_flags |= BIT_3;
671
672 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
673 cmd->prot_sg = se_cmd->t_prot_sg;
674 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
675 se_cmd->pi_err = 0;
676
677 /*
678 * Now queue completed DATA_IN the qla2xxx LLD and response ring
679 */
680 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
681 se_cmd->scsi_status);
682 }
683
684 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
685 {
686 struct qla_tgt_cmd *cmd = container_of(se_cmd,
687 struct qla_tgt_cmd, se_cmd);
688 int xmit_type = QLA_TGT_XMIT_STATUS;
689
690 cmd->bufflen = se_cmd->data_length;
691 cmd->sg = NULL;
692 cmd->sg_cnt = 0;
693 cmd->offset = 0;
694 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
695 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
696 if (cmd->cmd_flags & BIT_5) {
697 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
698 dump_stack();
699 }
700 cmd->cmd_flags |= BIT_5;
701
702 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
703 /*
704 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
705 * for qla_tgt_xmit_response LLD code
706 */
707 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
708 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
709 se_cmd->residual_count = 0;
710 }
711 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
712 se_cmd->residual_count += se_cmd->data_length;
713
714 cmd->bufflen = 0;
715 }
716 /*
717 * Now queue status response to qla2xxx LLD code and response ring
718 */
719 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
720 }
721
722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
723 {
724 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
725 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
726 struct qla_tgt_mgmt_cmd, se_cmd);
727
728 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
729 mcmd, se_tmr->function, se_tmr->response);
730 /*
731 * Do translation between TCM TM response codes and
732 * QLA2xxx FC TM response codes.
733 */
734 switch (se_tmr->response) {
735 case TMR_FUNCTION_COMPLETE:
736 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
737 break;
738 case TMR_TASK_DOES_NOT_EXIST:
739 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
740 break;
741 case TMR_FUNCTION_REJECTED:
742 mcmd->fc_tm_rsp = FC_TM_REJECT;
743 break;
744 case TMR_LUN_DOES_NOT_EXIST:
745 default:
746 mcmd->fc_tm_rsp = FC_TM_FAILED;
747 break;
748 }
749 /*
750 * Queue the TM response to QLA2xxx LLD to build a
751 * CTIO response packet.
752 */
753 qlt_xmit_tm_rsp(mcmd);
754 }
755
756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
757 {
758 struct qla_tgt_cmd *cmd = container_of(se_cmd,
759 struct qla_tgt_cmd, se_cmd);
760 struct scsi_qla_host *vha = cmd->vha;
761 struct qla_hw_data *ha = vha->hw;
762
763 if (!cmd->sg_mapped)
764 return;
765
766 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
767 cmd->sg_mapped = 0;
768 }
769
770 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
771 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
772 /*
773 * Expected to be called with struct qla_hw_data->hardware_lock held
774 */
775 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
776 {
777 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
778 struct se_portal_group *se_tpg = se_nacl->se_tpg;
779 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
780 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
781 struct tcm_qla2xxx_lport, lport_wwn);
782 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
783 struct tcm_qla2xxx_nacl, se_node_acl);
784 void *node;
785
786 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
787
788 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
789 if (WARN_ON(node && (node != se_nacl))) {
790 /*
791 * The nacl no longer matches what we think it should be.
792 * Most likely a new dynamic acl has been added while
793 * someone dropped the hardware lock. It clearly is a
794 * bug elsewhere, but this bit can't make things worse.
795 */
796 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
797 node, GFP_ATOMIC);
798 }
799
800 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
801 se_nacl, nacl->nport_wwnn, nacl->nport_id);
802 /*
803 * Now clear the se_nacl and session pointers from our HW lport lookup
804 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
805 *
806 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
807 * target_wait_for_sess_cmds() before the session waits for outstanding
808 * I/O to complete, to avoid a race between session shutdown execution
809 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
810 */
811 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
812 }
813
814 static void tcm_qla2xxx_release_session(struct kref *kref)
815 {
816 struct se_session *se_sess = container_of(kref,
817 struct se_session, sess_kref);
818
819 qlt_unreg_sess(se_sess->fabric_sess_ptr);
820 }
821
822 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
823 {
824 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
825 struct qla_hw_data *ha = sess->vha->hw;
826 unsigned long flags;
827
828 spin_lock_irqsave(&ha->hardware_lock, flags);
829 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
830 spin_unlock_irqrestore(&ha->hardware_lock, flags);
831 }
832
833 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
834 {
835 if (!sess)
836 return;
837
838 assert_spin_locked(&sess->vha->hw->hardware_lock);
839 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
840 }
841
842 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
843 {
844 assert_spin_locked(&sess->vha->hw->hardware_lock);
845 target_sess_cmd_list_set_waiting(sess->se_sess);
846 }
847
848 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
849 struct se_portal_group *se_tpg,
850 struct config_group *group,
851 const char *name)
852 {
853 struct se_node_acl *se_nacl, *se_nacl_new;
854 struct tcm_qla2xxx_nacl *nacl;
855 u64 wwnn;
856 u32 qla2xxx_nexus_depth;
857
858 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
859 return ERR_PTR(-EINVAL);
860
861 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
862 if (!se_nacl_new)
863 return ERR_PTR(-ENOMEM);
864 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
865 qla2xxx_nexus_depth = 1;
866
867 /*
868 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
869 * when converting a NodeACL from demo mode -> explict
870 */
871 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
872 name, qla2xxx_nexus_depth);
873 if (IS_ERR(se_nacl)) {
874 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
875 return se_nacl;
876 }
877 /*
878 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
879 */
880 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
881 nacl->nport_wwnn = wwnn;
882 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
883
884 return se_nacl;
885 }
886
887 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
888 {
889 struct se_portal_group *se_tpg = se_acl->se_tpg;
890 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
891 struct tcm_qla2xxx_nacl, se_node_acl);
892
893 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
894 kfree(nacl);
895 }
896
897 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
898
899 #define DEF_QLA_TPG_ATTRIB(name) \
900 \
901 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
902 struct se_portal_group *se_tpg, \
903 char *page) \
904 { \
905 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
906 struct tcm_qla2xxx_tpg, se_tpg); \
907 \
908 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
909 } \
910 \
911 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
912 struct se_portal_group *se_tpg, \
913 const char *page, \
914 size_t count) \
915 { \
916 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
917 struct tcm_qla2xxx_tpg, se_tpg); \
918 unsigned long val; \
919 int ret; \
920 \
921 ret = kstrtoul(page, 0, &val); \
922 if (ret < 0) { \
923 pr_err("kstrtoul() failed with" \
924 " ret: %d\n", ret); \
925 return -EINVAL; \
926 } \
927 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
928 \
929 return (!ret) ? count : -EINVAL; \
930 }
931
932 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
933 \
934 static int tcm_qla2xxx_set_attrib_##_name( \
935 struct tcm_qla2xxx_tpg *tpg, \
936 unsigned long val) \
937 { \
938 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
939 \
940 if ((val != 0) && (val != 1)) { \
941 pr_err("Illegal boolean value %lu\n", val); \
942 return -EINVAL; \
943 } \
944 \
945 a->_name = val; \
946 return 0; \
947 }
948
949 #define QLA_TPG_ATTR(_name, _mode) \
950 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
951
952 /*
953 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
954 */
955 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
956 DEF_QLA_TPG_ATTRIB(generate_node_acls);
957 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
958
959 /*
960 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
961 */
962 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
963 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
964 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
965
966 /*
967 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
968 */
969 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
970 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
971 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
972
973 /*
974 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
975 */
976 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
977 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
978 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
979
980 /*
981 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
982 */
983 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
984 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
985 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
986
987 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
988 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
989 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
990 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
991 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
992 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
993 NULL,
994 };
995
996 /* End items for tcm_qla2xxx_tpg_attrib_cit */
997
998 static ssize_t tcm_qla2xxx_tpg_show_enable(
999 struct se_portal_group *se_tpg,
1000 char *page)
1001 {
1002 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1003 struct tcm_qla2xxx_tpg, se_tpg);
1004
1005 return snprintf(page, PAGE_SIZE, "%d\n",
1006 atomic_read(&tpg->lport_tpg_enabled));
1007 }
1008
1009 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
1010 {
1011 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1012 struct tcm_qla2xxx_tpg, tpg_base_work);
1013 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1014 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1015
1016 if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys,
1017 &se_tpg->tpg_group.cg_item)) {
1018 atomic_set(&base_tpg->lport_tpg_enabled, 1);
1019 qlt_enable_vha(base_vha);
1020 }
1021 complete(&base_tpg->tpg_base_comp);
1022 }
1023
1024 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
1025 {
1026 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1027 struct tcm_qla2xxx_tpg, tpg_base_work);
1028 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1029 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1030
1031 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
1032 atomic_set(&base_tpg->lport_tpg_enabled, 0);
1033 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys,
1034 &se_tpg->tpg_group.cg_item);
1035 }
1036 complete(&base_tpg->tpg_base_comp);
1037 }
1038
1039 static ssize_t tcm_qla2xxx_tpg_store_enable(
1040 struct se_portal_group *se_tpg,
1041 const char *page,
1042 size_t count)
1043 {
1044 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1045 struct tcm_qla2xxx_tpg, se_tpg);
1046 unsigned long op;
1047 int rc;
1048
1049 rc = kstrtoul(page, 0, &op);
1050 if (rc < 0) {
1051 pr_err("kstrtoul() returned %d\n", rc);
1052 return -EINVAL;
1053 }
1054 if ((op != 1) && (op != 0)) {
1055 pr_err("Illegal value for tpg_enable: %lu\n", op);
1056 return -EINVAL;
1057 }
1058 if (op) {
1059 if (atomic_read(&tpg->lport_tpg_enabled))
1060 return -EEXIST;
1061
1062 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
1063 } else {
1064 if (!atomic_read(&tpg->lport_tpg_enabled))
1065 return count;
1066
1067 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
1068 }
1069 init_completion(&tpg->tpg_base_comp);
1070 schedule_work(&tpg->tpg_base_work);
1071 wait_for_completion(&tpg->tpg_base_comp);
1072
1073 if (op) {
1074 if (!atomic_read(&tpg->lport_tpg_enabled))
1075 return -ENODEV;
1076 } else {
1077 if (atomic_read(&tpg->lport_tpg_enabled))
1078 return -EPERM;
1079 }
1080 return count;
1081 }
1082
1083 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1084
1085 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1086 &tcm_qla2xxx_tpg_enable.attr,
1087 NULL,
1088 };
1089
1090 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1091 struct se_wwn *wwn,
1092 struct config_group *group,
1093 const char *name)
1094 {
1095 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1096 struct tcm_qla2xxx_lport, lport_wwn);
1097 struct tcm_qla2xxx_tpg *tpg;
1098 unsigned long tpgt;
1099 int ret;
1100
1101 if (strstr(name, "tpgt_") != name)
1102 return ERR_PTR(-EINVAL);
1103 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1104 return ERR_PTR(-EINVAL);
1105
1106 if ((tpgt != 1)) {
1107 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1108 return ERR_PTR(-ENOSYS);
1109 }
1110
1111 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1112 if (!tpg) {
1113 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1114 return ERR_PTR(-ENOMEM);
1115 }
1116 tpg->lport = lport;
1117 tpg->lport_tpgt = tpgt;
1118 /*
1119 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1120 * NodeACLs
1121 */
1122 tpg->tpg_attrib.generate_node_acls = 1;
1123 tpg->tpg_attrib.demo_mode_write_protect = 1;
1124 tpg->tpg_attrib.cache_dynamic_acls = 1;
1125 tpg->tpg_attrib.demo_mode_login_only = 1;
1126
1127 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1128 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1129 if (ret < 0) {
1130 kfree(tpg);
1131 return NULL;
1132 }
1133
1134 lport->tpg_1 = tpg;
1135
1136 return &tpg->se_tpg;
1137 }
1138
1139 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1140 {
1141 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1142 struct tcm_qla2xxx_tpg, se_tpg);
1143 struct tcm_qla2xxx_lport *lport = tpg->lport;
1144 struct scsi_qla_host *vha = lport->qla_vha;
1145 /*
1146 * Call into qla2x_target.c LLD logic to shutdown the active
1147 * FC Nexuses and disable target mode operation for this qla_hw_data
1148 */
1149 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1150 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1151
1152 core_tpg_deregister(se_tpg);
1153 /*
1154 * Clear local TPG=1 pointer for non NPIV mode.
1155 */
1156 lport->tpg_1 = NULL;
1157 kfree(tpg);
1158 }
1159
1160 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1161 struct se_portal_group *se_tpg,
1162 char *page)
1163 {
1164 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1165 }
1166
1167 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1168 struct se_portal_group *se_tpg,
1169 const char *page,
1170 size_t count)
1171 {
1172 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1173 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1174 struct tcm_qla2xxx_lport, lport_wwn);
1175 struct scsi_qla_host *vha = lport->qla_vha;
1176 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1177 struct tcm_qla2xxx_tpg, se_tpg);
1178 unsigned long op;
1179 int rc;
1180
1181 rc = kstrtoul(page, 0, &op);
1182 if (rc < 0) {
1183 pr_err("kstrtoul() returned %d\n", rc);
1184 return -EINVAL;
1185 }
1186 if ((op != 1) && (op != 0)) {
1187 pr_err("Illegal value for tpg_enable: %lu\n", op);
1188 return -EINVAL;
1189 }
1190 if (op) {
1191 if (atomic_read(&tpg->lport_tpg_enabled))
1192 return -EEXIST;
1193
1194 atomic_set(&tpg->lport_tpg_enabled, 1);
1195 qlt_enable_vha(vha);
1196 } else {
1197 if (!atomic_read(&tpg->lport_tpg_enabled))
1198 return count;
1199
1200 atomic_set(&tpg->lport_tpg_enabled, 0);
1201 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1202 }
1203
1204 return count;
1205 }
1206
1207 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1208
1209 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1210 &tcm_qla2xxx_npiv_tpg_enable.attr,
1211 NULL,
1212 };
1213
1214 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1215 struct se_wwn *wwn,
1216 struct config_group *group,
1217 const char *name)
1218 {
1219 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1220 struct tcm_qla2xxx_lport, lport_wwn);
1221 struct tcm_qla2xxx_tpg *tpg;
1222 unsigned long tpgt;
1223 int ret;
1224
1225 if (strstr(name, "tpgt_") != name)
1226 return ERR_PTR(-EINVAL);
1227 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1228 return ERR_PTR(-EINVAL);
1229
1230 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1231 if (!tpg) {
1232 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1233 return ERR_PTR(-ENOMEM);
1234 }
1235 tpg->lport = lport;
1236 tpg->lport_tpgt = tpgt;
1237
1238 /*
1239 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1240 * NodeACLs
1241 */
1242 tpg->tpg_attrib.generate_node_acls = 1;
1243 tpg->tpg_attrib.demo_mode_write_protect = 1;
1244 tpg->tpg_attrib.cache_dynamic_acls = 1;
1245 tpg->tpg_attrib.demo_mode_login_only = 1;
1246
1247 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1248 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1249 if (ret < 0) {
1250 kfree(tpg);
1251 return NULL;
1252 }
1253 lport->tpg_1 = tpg;
1254 return &tpg->se_tpg;
1255 }
1256
1257 /*
1258 * Expected to be called with struct qla_hw_data->hardware_lock held
1259 */
1260 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1261 scsi_qla_host_t *vha,
1262 const uint8_t *s_id)
1263 {
1264 struct tcm_qla2xxx_lport *lport;
1265 struct se_node_acl *se_nacl;
1266 struct tcm_qla2xxx_nacl *nacl;
1267 u32 key;
1268
1269 lport = vha->vha_tgt.target_lport_ptr;
1270 if (!lport) {
1271 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1272 dump_stack();
1273 return NULL;
1274 }
1275
1276 key = (((unsigned long)s_id[0] << 16) |
1277 ((unsigned long)s_id[1] << 8) |
1278 (unsigned long)s_id[2]);
1279 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1280
1281 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1282 if (!se_nacl) {
1283 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1284 return NULL;
1285 }
1286 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1287 se_nacl, se_nacl->initiatorname);
1288
1289 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1290 if (!nacl->qla_tgt_sess) {
1291 pr_err("Unable to locate struct qla_tgt_sess\n");
1292 return NULL;
1293 }
1294
1295 return nacl->qla_tgt_sess;
1296 }
1297
1298 /*
1299 * Expected to be called with struct qla_hw_data->hardware_lock held
1300 */
1301 static void tcm_qla2xxx_set_sess_by_s_id(
1302 struct tcm_qla2xxx_lport *lport,
1303 struct se_node_acl *new_se_nacl,
1304 struct tcm_qla2xxx_nacl *nacl,
1305 struct se_session *se_sess,
1306 struct qla_tgt_sess *qla_tgt_sess,
1307 uint8_t *s_id)
1308 {
1309 u32 key;
1310 void *slot;
1311 int rc;
1312
1313 key = (((unsigned long)s_id[0] << 16) |
1314 ((unsigned long)s_id[1] << 8) |
1315 (unsigned long)s_id[2]);
1316 pr_debug("set_sess_by_s_id: %06x\n", key);
1317
1318 slot = btree_lookup32(&lport->lport_fcport_map, key);
1319 if (!slot) {
1320 if (new_se_nacl) {
1321 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1322 nacl->nport_id = key;
1323 rc = btree_insert32(&lport->lport_fcport_map, key,
1324 new_se_nacl, GFP_ATOMIC);
1325 if (rc)
1326 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1327 (int)key);
1328 } else {
1329 pr_debug("Wiping nonexisting fc_port entry\n");
1330 }
1331
1332 qla_tgt_sess->se_sess = se_sess;
1333 nacl->qla_tgt_sess = qla_tgt_sess;
1334 return;
1335 }
1336
1337 if (nacl->qla_tgt_sess) {
1338 if (new_se_nacl == NULL) {
1339 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1340 btree_remove32(&lport->lport_fcport_map, key);
1341 nacl->qla_tgt_sess = NULL;
1342 return;
1343 }
1344 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1345 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1346 qla_tgt_sess->se_sess = se_sess;
1347 nacl->qla_tgt_sess = qla_tgt_sess;
1348 return;
1349 }
1350
1351 if (new_se_nacl == NULL) {
1352 pr_debug("Clearing existing fc_port entry\n");
1353 btree_remove32(&lport->lport_fcport_map, key);
1354 return;
1355 }
1356
1357 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1358 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1359 qla_tgt_sess->se_sess = se_sess;
1360 nacl->qla_tgt_sess = qla_tgt_sess;
1361
1362 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1363 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1364 }
1365
1366 /*
1367 * Expected to be called with struct qla_hw_data->hardware_lock held
1368 */
1369 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1370 scsi_qla_host_t *vha,
1371 const uint16_t loop_id)
1372 {
1373 struct tcm_qla2xxx_lport *lport;
1374 struct se_node_acl *se_nacl;
1375 struct tcm_qla2xxx_nacl *nacl;
1376 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1377
1378 lport = vha->vha_tgt.target_lport_ptr;
1379 if (!lport) {
1380 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1381 dump_stack();
1382 return NULL;
1383 }
1384
1385 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1386
1387 fc_loopid = lport->lport_loopid_map + loop_id;
1388 se_nacl = fc_loopid->se_nacl;
1389 if (!se_nacl) {
1390 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1391 loop_id);
1392 return NULL;
1393 }
1394
1395 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1396
1397 if (!nacl->qla_tgt_sess) {
1398 pr_err("Unable to locate struct qla_tgt_sess\n");
1399 return NULL;
1400 }
1401
1402 return nacl->qla_tgt_sess;
1403 }
1404
1405 /*
1406 * Expected to be called with struct qla_hw_data->hardware_lock held
1407 */
1408 static void tcm_qla2xxx_set_sess_by_loop_id(
1409 struct tcm_qla2xxx_lport *lport,
1410 struct se_node_acl *new_se_nacl,
1411 struct tcm_qla2xxx_nacl *nacl,
1412 struct se_session *se_sess,
1413 struct qla_tgt_sess *qla_tgt_sess,
1414 uint16_t loop_id)
1415 {
1416 struct se_node_acl *saved_nacl;
1417 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1418
1419 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1420
1421 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1422 lport->lport_loopid_map)[loop_id];
1423
1424 saved_nacl = fc_loopid->se_nacl;
1425 if (!saved_nacl) {
1426 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1427 fc_loopid->se_nacl = new_se_nacl;
1428 if (qla_tgt_sess->se_sess != se_sess)
1429 qla_tgt_sess->se_sess = se_sess;
1430 if (nacl->qla_tgt_sess != qla_tgt_sess)
1431 nacl->qla_tgt_sess = qla_tgt_sess;
1432 return;
1433 }
1434
1435 if (nacl->qla_tgt_sess) {
1436 if (new_se_nacl == NULL) {
1437 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1438 fc_loopid->se_nacl = NULL;
1439 nacl->qla_tgt_sess = NULL;
1440 return;
1441 }
1442
1443 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1444 fc_loopid->se_nacl = new_se_nacl;
1445 if (qla_tgt_sess->se_sess != se_sess)
1446 qla_tgt_sess->se_sess = se_sess;
1447 if (nacl->qla_tgt_sess != qla_tgt_sess)
1448 nacl->qla_tgt_sess = qla_tgt_sess;
1449 return;
1450 }
1451
1452 if (new_se_nacl == NULL) {
1453 pr_debug("Clearing fc_loopid->se_nacl\n");
1454 fc_loopid->se_nacl = NULL;
1455 return;
1456 }
1457
1458 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1459 fc_loopid->se_nacl = new_se_nacl;
1460 if (qla_tgt_sess->se_sess != se_sess)
1461 qla_tgt_sess->se_sess = se_sess;
1462 if (nacl->qla_tgt_sess != qla_tgt_sess)
1463 nacl->qla_tgt_sess = qla_tgt_sess;
1464
1465 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1466 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1467 }
1468
1469 /*
1470 * Should always be called with qla_hw_data->hardware_lock held.
1471 */
1472 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1473 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1474 {
1475 struct se_session *se_sess = sess->se_sess;
1476 unsigned char be_sid[3];
1477
1478 be_sid[0] = sess->s_id.b.domain;
1479 be_sid[1] = sess->s_id.b.area;
1480 be_sid[2] = sess->s_id.b.al_pa;
1481
1482 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1483 sess, be_sid);
1484 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1485 sess, sess->loop_id);
1486 }
1487
1488 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1489 {
1490 struct qla_tgt *tgt = sess->tgt;
1491 struct qla_hw_data *ha = tgt->ha;
1492 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1493 struct se_session *se_sess;
1494 struct se_node_acl *se_nacl;
1495 struct tcm_qla2xxx_lport *lport;
1496 struct tcm_qla2xxx_nacl *nacl;
1497
1498 BUG_ON(in_interrupt());
1499
1500 se_sess = sess->se_sess;
1501 if (!se_sess) {
1502 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1503 dump_stack();
1504 return;
1505 }
1506 se_nacl = se_sess->se_node_acl;
1507 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1508
1509 lport = vha->vha_tgt.target_lport_ptr;
1510 if (!lport) {
1511 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1512 dump_stack();
1513 return;
1514 }
1515 target_wait_for_sess_cmds(se_sess);
1516
1517 transport_deregister_session_configfs(sess->se_sess);
1518 transport_deregister_session(sess->se_sess);
1519 }
1520
1521 /*
1522 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1523 * to locate struct se_node_acl
1524 */
1525 static int tcm_qla2xxx_check_initiator_node_acl(
1526 scsi_qla_host_t *vha,
1527 unsigned char *fc_wwpn,
1528 void *qla_tgt_sess,
1529 uint8_t *s_id,
1530 uint16_t loop_id)
1531 {
1532 struct qla_hw_data *ha = vha->hw;
1533 struct tcm_qla2xxx_lport *lport;
1534 struct tcm_qla2xxx_tpg *tpg;
1535 struct tcm_qla2xxx_nacl *nacl;
1536 struct se_portal_group *se_tpg;
1537 struct se_node_acl *se_nacl;
1538 struct se_session *se_sess;
1539 struct qla_tgt_sess *sess = qla_tgt_sess;
1540 unsigned char port_name[36];
1541 unsigned long flags;
1542 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1543 TCM_QLA2XXX_DEFAULT_TAGS;
1544
1545 lport = vha->vha_tgt.target_lport_ptr;
1546 if (!lport) {
1547 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1548 dump_stack();
1549 return -EINVAL;
1550 }
1551 /*
1552 * Locate the TPG=1 reference..
1553 */
1554 tpg = lport->tpg_1;
1555 if (!tpg) {
1556 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1557 return -EINVAL;
1558 }
1559 se_tpg = &tpg->se_tpg;
1560
1561 se_sess = transport_init_session_tags(num_tags,
1562 sizeof(struct qla_tgt_cmd),
1563 TARGET_PROT_NORMAL);
1564 if (IS_ERR(se_sess)) {
1565 pr_err("Unable to initialize struct se_session\n");
1566 return PTR_ERR(se_sess);
1567 }
1568 /*
1569 * Format the FCP Initiator port_name into colon seperated values to
1570 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1571 */
1572 memset(&port_name, 0, 36);
1573 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1574 /*
1575 * Locate our struct se_node_acl either from an explict NodeACL created
1576 * via ConfigFS, or via running in TPG demo mode.
1577 */
1578 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1579 port_name);
1580 if (!se_sess->se_node_acl) {
1581 transport_free_session(se_sess);
1582 return -EINVAL;
1583 }
1584 se_nacl = se_sess->se_node_acl;
1585 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1586 /*
1587 * And now setup the new se_nacl and session pointers into our HW lport
1588 * mappings for fabric S_ID and LOOP_ID.
1589 */
1590 spin_lock_irqsave(&ha->hardware_lock, flags);
1591 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1592 qla_tgt_sess, s_id);
1593 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1594 qla_tgt_sess, loop_id);
1595 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1596 /*
1597 * Finally register the new FC Nexus with TCM
1598 */
1599 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1600
1601 return 0;
1602 }
1603
1604 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1605 uint16_t loop_id, bool conf_compl_supported)
1606 {
1607 struct qla_tgt *tgt = sess->tgt;
1608 struct qla_hw_data *ha = tgt->ha;
1609 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1610 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1611 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1612 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1613 struct tcm_qla2xxx_nacl, se_node_acl);
1614 u32 key;
1615
1616
1617 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1618 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1619 sess, sess->port_name,
1620 sess->loop_id, loop_id, sess->s_id.b.domain,
1621 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1622 s_id.b.area, s_id.b.al_pa);
1623
1624 if (sess->loop_id != loop_id) {
1625 /*
1626 * Because we can shuffle loop IDs around and we
1627 * update different sessions non-atomically, we might
1628 * have overwritten this session's old loop ID
1629 * already, and we might end up overwriting some other
1630 * session that will be updated later. So we have to
1631 * be extra careful and we can't warn about those things...
1632 */
1633 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1634 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1635
1636 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1637
1638 sess->loop_id = loop_id;
1639 }
1640
1641 if (sess->s_id.b24 != s_id.b24) {
1642 key = (((u32) sess->s_id.b.domain << 16) |
1643 ((u32) sess->s_id.b.area << 8) |
1644 ((u32) sess->s_id.b.al_pa));
1645
1646 if (btree_lookup32(&lport->lport_fcport_map, key))
1647 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1648 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1649 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1650 else
1651 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1652 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1653
1654 key = (((u32) s_id.b.domain << 16) |
1655 ((u32) s_id.b.area << 8) |
1656 ((u32) s_id.b.al_pa));
1657
1658 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1659 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1660 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1661 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1662 } else {
1663 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1664 }
1665
1666 sess->s_id = s_id;
1667 nacl->nport_id = key;
1668 }
1669
1670 sess->conf_compl_supported = conf_compl_supported;
1671 }
1672
1673 /*
1674 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1675 */
1676 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1677 .handle_cmd = tcm_qla2xxx_handle_cmd,
1678 .handle_data = tcm_qla2xxx_handle_data,
1679 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1680 .handle_tmr = tcm_qla2xxx_handle_tmr,
1681 .free_cmd = tcm_qla2xxx_free_cmd,
1682 .free_mcmd = tcm_qla2xxx_free_mcmd,
1683 .free_session = tcm_qla2xxx_free_session,
1684 .update_sess = tcm_qla2xxx_update_sess,
1685 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1686 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1687 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1688 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1689 .put_sess = tcm_qla2xxx_put_sess,
1690 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1691 };
1692
1693 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1694 {
1695 int rc;
1696
1697 rc = btree_init32(&lport->lport_fcport_map);
1698 if (rc) {
1699 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1700 return rc;
1701 }
1702
1703 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1704 65536);
1705 if (!lport->lport_loopid_map) {
1706 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1707 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1708 btree_destroy32(&lport->lport_fcport_map);
1709 return -ENOMEM;
1710 }
1711 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1712 * 65536);
1713 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1714 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1715 return 0;
1716 }
1717
1718 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1719 void *target_lport_ptr,
1720 u64 npiv_wwpn, u64 npiv_wwnn)
1721 {
1722 struct qla_hw_data *ha = vha->hw;
1723 struct tcm_qla2xxx_lport *lport =
1724 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1725 /*
1726 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1727 */
1728 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1729 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1730 lport->qla_vha = vha;
1731
1732 return 0;
1733 }
1734
1735 static struct se_wwn *tcm_qla2xxx_make_lport(
1736 struct target_fabric_configfs *tf,
1737 struct config_group *group,
1738 const char *name)
1739 {
1740 struct tcm_qla2xxx_lport *lport;
1741 u64 wwpn;
1742 int ret = -ENODEV;
1743
1744 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1745 return ERR_PTR(-EINVAL);
1746
1747 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1748 if (!lport) {
1749 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1750 return ERR_PTR(-ENOMEM);
1751 }
1752 lport->lport_wwpn = wwpn;
1753 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1754 wwpn);
1755 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1756
1757 ret = tcm_qla2xxx_init_lport(lport);
1758 if (ret != 0)
1759 goto out;
1760
1761 ret = qlt_lport_register(lport, wwpn, 0, 0,
1762 tcm_qla2xxx_lport_register_cb);
1763 if (ret != 0)
1764 goto out_lport;
1765
1766 return &lport->lport_wwn;
1767 out_lport:
1768 vfree(lport->lport_loopid_map);
1769 btree_destroy32(&lport->lport_fcport_map);
1770 out:
1771 kfree(lport);
1772 return ERR_PTR(ret);
1773 }
1774
1775 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1776 {
1777 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1778 struct tcm_qla2xxx_lport, lport_wwn);
1779 struct scsi_qla_host *vha = lport->qla_vha;
1780 struct se_node_acl *node;
1781 u32 key = 0;
1782
1783 /*
1784 * Call into qla2x_target.c LLD logic to complete the
1785 * shutdown of struct qla_tgt after the call to
1786 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1787 */
1788 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1789 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1790
1791 qlt_lport_deregister(vha);
1792
1793 vfree(lport->lport_loopid_map);
1794 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1795 btree_remove32(&lport->lport_fcport_map, key);
1796 btree_destroy32(&lport->lport_fcport_map);
1797 kfree(lport);
1798 }
1799
1800 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1801 void *target_lport_ptr,
1802 u64 npiv_wwpn, u64 npiv_wwnn)
1803 {
1804 struct fc_vport *vport;
1805 struct Scsi_Host *sh = base_vha->host;
1806 struct scsi_qla_host *npiv_vha;
1807 struct tcm_qla2xxx_lport *lport =
1808 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1809 struct tcm_qla2xxx_lport *base_lport =
1810 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1811 struct tcm_qla2xxx_tpg *base_tpg;
1812 struct fc_vport_identifiers vport_id;
1813
1814 if (!qla_tgt_mode_enabled(base_vha)) {
1815 pr_err("qla2xxx base_vha not enabled for target mode\n");
1816 return -EPERM;
1817 }
1818
1819 if (!base_lport || !base_lport->tpg_1 ||
1820 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1821 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1822 return -EPERM;
1823 }
1824 base_tpg = base_lport->tpg_1;
1825
1826 memset(&vport_id, 0, sizeof(vport_id));
1827 vport_id.port_name = npiv_wwpn;
1828 vport_id.node_name = npiv_wwnn;
1829 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1830 vport_id.vport_type = FC_PORTTYPE_NPIV;
1831 vport_id.disable = false;
1832
1833 vport = fc_vport_create(sh, 0, &vport_id);
1834 if (!vport) {
1835 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1836 return -ENODEV;
1837 }
1838 /*
1839 * Setup local pointer to NPIV vhba + target_lport_ptr
1840 */
1841 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1842 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1843 lport->qla_vha = npiv_vha;
1844 scsi_host_get(npiv_vha->host);
1845 return 0;
1846 }
1847
1848
1849 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1850 struct target_fabric_configfs *tf,
1851 struct config_group *group,
1852 const char *name)
1853 {
1854 struct tcm_qla2xxx_lport *lport;
1855 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1856 char *p, tmp[128];
1857 int ret;
1858
1859 snprintf(tmp, 128, "%s", name);
1860
1861 p = strchr(tmp, '@');
1862 if (!p) {
1863 pr_err("Unable to locate NPIV '@' seperator\n");
1864 return ERR_PTR(-EINVAL);
1865 }
1866 *p++ = '\0';
1867
1868 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1869 return ERR_PTR(-EINVAL);
1870
1871 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1872 &npiv_wwpn, &npiv_wwnn) < 0)
1873 return ERR_PTR(-EINVAL);
1874
1875 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1876 if (!lport) {
1877 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1878 return ERR_PTR(-ENOMEM);
1879 }
1880 lport->lport_npiv_wwpn = npiv_wwpn;
1881 lport->lport_npiv_wwnn = npiv_wwnn;
1882 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1883
1884 ret = tcm_qla2xxx_init_lport(lport);
1885 if (ret != 0)
1886 goto out;
1887
1888 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1889 tcm_qla2xxx_lport_register_npiv_cb);
1890 if (ret != 0)
1891 goto out_lport;
1892
1893 return &lport->lport_wwn;
1894 out_lport:
1895 vfree(lport->lport_loopid_map);
1896 btree_destroy32(&lport->lport_fcport_map);
1897 out:
1898 kfree(lport);
1899 return ERR_PTR(ret);
1900 }
1901
1902 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1903 {
1904 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1905 struct tcm_qla2xxx_lport, lport_wwn);
1906 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1907 struct qla_hw_data *ha = npiv_vha->hw;
1908 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1909
1910 scsi_host_put(npiv_vha->host);
1911 /*
1912 * Notify libfc that we want to release the vha->fc_vport
1913 */
1914 fc_vport_terminate(npiv_vha->fc_vport);
1915 scsi_host_put(base_vha->host);
1916 kfree(lport);
1917 }
1918
1919
1920 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1921 struct target_fabric_configfs *tf,
1922 char *page)
1923 {
1924 return sprintf(page,
1925 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1926 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1927 utsname()->machine);
1928 }
1929
1930 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1931
1932 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1933 &tcm_qla2xxx_wwn_version.attr,
1934 NULL,
1935 };
1936
1937 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1938 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1939 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1940 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1941 .tpg_get_tag = tcm_qla2xxx_get_tag,
1942 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1943 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1944 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1945 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1946 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1947 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1948 .tpg_check_demo_mode_write_protect =
1949 tcm_qla2xxx_check_demo_write_protect,
1950 .tpg_check_prod_mode_write_protect =
1951 tcm_qla2xxx_check_prod_write_protect,
1952 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1953 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1954 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1955 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1956 .check_stop_free = tcm_qla2xxx_check_stop_free,
1957 .release_cmd = tcm_qla2xxx_release_cmd,
1958 .put_session = tcm_qla2xxx_put_session,
1959 .shutdown_session = tcm_qla2xxx_shutdown_session,
1960 .close_session = tcm_qla2xxx_close_session,
1961 .sess_get_index = tcm_qla2xxx_sess_get_index,
1962 .sess_get_initiator_sid = NULL,
1963 .write_pending = tcm_qla2xxx_write_pending,
1964 .write_pending_status = tcm_qla2xxx_write_pending_status,
1965 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1966 .get_task_tag = tcm_qla2xxx_get_task_tag,
1967 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1968 .queue_data_in = tcm_qla2xxx_queue_data_in,
1969 .queue_status = tcm_qla2xxx_queue_status,
1970 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1971 .aborted_task = tcm_qla2xxx_aborted_task,
1972 /*
1973 * Setup function pointers for generic logic in
1974 * target_core_fabric_configfs.c
1975 */
1976 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1977 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1978 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1979 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1980 .fabric_post_link = NULL,
1981 .fabric_pre_unlink = NULL,
1982 .fabric_make_np = NULL,
1983 .fabric_drop_np = NULL,
1984 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1985 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1986 };
1987
1988 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1989 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1990 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1991 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1992 .tpg_get_tag = tcm_qla2xxx_get_tag,
1993 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1994 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1995 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1996 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1997 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1998 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1999 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
2000 .tpg_check_prod_mode_write_protect =
2001 tcm_qla2xxx_check_prod_write_protect,
2002 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
2003 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
2004 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
2005 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
2006 .check_stop_free = tcm_qla2xxx_check_stop_free,
2007 .release_cmd = tcm_qla2xxx_release_cmd,
2008 .put_session = tcm_qla2xxx_put_session,
2009 .shutdown_session = tcm_qla2xxx_shutdown_session,
2010 .close_session = tcm_qla2xxx_close_session,
2011 .sess_get_index = tcm_qla2xxx_sess_get_index,
2012 .sess_get_initiator_sid = NULL,
2013 .write_pending = tcm_qla2xxx_write_pending,
2014 .write_pending_status = tcm_qla2xxx_write_pending_status,
2015 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
2016 .get_task_tag = tcm_qla2xxx_get_task_tag,
2017 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
2018 .queue_data_in = tcm_qla2xxx_queue_data_in,
2019 .queue_status = tcm_qla2xxx_queue_status,
2020 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
2021 .aborted_task = tcm_qla2xxx_aborted_task,
2022 /*
2023 * Setup function pointers for generic logic in
2024 * target_core_fabric_configfs.c
2025 */
2026 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
2027 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
2028 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
2029 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
2030 .fabric_post_link = NULL,
2031 .fabric_pre_unlink = NULL,
2032 .fabric_make_np = NULL,
2033 .fabric_drop_np = NULL,
2034 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
2035 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
2036 };
2037
2038 static int tcm_qla2xxx_register_configfs(void)
2039 {
2040 struct target_fabric_configfs *fabric, *npiv_fabric;
2041 int ret;
2042
2043 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
2044 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
2045 utsname()->machine);
2046 /*
2047 * Register the top level struct config_item_type with TCM core
2048 */
2049 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
2050 if (IS_ERR(fabric)) {
2051 pr_err("target_fabric_configfs_init() failed\n");
2052 return PTR_ERR(fabric);
2053 }
2054 /*
2055 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
2056 */
2057 fabric->tf_ops = tcm_qla2xxx_ops;
2058 /*
2059 * Setup default attribute lists for various fabric->tf_cit_tmpl
2060 */
2061 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
2062 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
2063 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs =
2064 tcm_qla2xxx_tpg_attrib_attrs;
2065 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
2066 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
2067 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
2068 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
2069 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
2070 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
2071 /*
2072 * Register the fabric for use within TCM
2073 */
2074 ret = target_fabric_configfs_register(fabric);
2075 if (ret < 0) {
2076 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
2077 return ret;
2078 }
2079 /*
2080 * Setup our local pointer to *fabric
2081 */
2082 tcm_qla2xxx_fabric_configfs = fabric;
2083 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
2084
2085 /*
2086 * Register the top level struct config_item_type for NPIV with TCM core
2087 */
2088 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
2089 if (IS_ERR(npiv_fabric)) {
2090 pr_err("target_fabric_configfs_init() failed\n");
2091 ret = PTR_ERR(npiv_fabric);
2092 goto out_fabric;
2093 }
2094 /*
2095 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
2096 */
2097 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
2098 /*
2099 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
2100 */
2101 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
2102 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs =
2103 tcm_qla2xxx_npiv_tpg_attrs;
2104 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
2105 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
2106 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
2107 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
2108 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
2109 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
2110 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
2111 /*
2112 * Register the npiv_fabric for use within TCM
2113 */
2114 ret = target_fabric_configfs_register(npiv_fabric);
2115 if (ret < 0) {
2116 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
2117 goto out_fabric;
2118 }
2119 /*
2120 * Setup our local pointer to *npiv_fabric
2121 */
2122 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
2123 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
2124
2125 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2126 WQ_MEM_RECLAIM, 0);
2127 if (!tcm_qla2xxx_free_wq) {
2128 ret = -ENOMEM;
2129 goto out_fabric_npiv;
2130 }
2131
2132 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
2133 if (!tcm_qla2xxx_cmd_wq) {
2134 ret = -ENOMEM;
2135 goto out_free_wq;
2136 }
2137
2138 return 0;
2139
2140 out_free_wq:
2141 destroy_workqueue(tcm_qla2xxx_free_wq);
2142 out_fabric_npiv:
2143 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2144 out_fabric:
2145 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2146 return ret;
2147 }
2148
2149 static void tcm_qla2xxx_deregister_configfs(void)
2150 {
2151 destroy_workqueue(tcm_qla2xxx_cmd_wq);
2152 destroy_workqueue(tcm_qla2xxx_free_wq);
2153
2154 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2155 tcm_qla2xxx_fabric_configfs = NULL;
2156 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
2157
2158 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2159 tcm_qla2xxx_npiv_fabric_configfs = NULL;
2160 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
2161 }
2162
2163 static int __init tcm_qla2xxx_init(void)
2164 {
2165 int ret;
2166
2167 ret = tcm_qla2xxx_register_configfs();
2168 if (ret < 0)
2169 return ret;
2170
2171 return 0;
2172 }
2173
2174 static void __exit tcm_qla2xxx_exit(void)
2175 {
2176 tcm_qla2xxx_deregister_configfs();
2177 }
2178
2179 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2180 MODULE_LICENSE("GPL");
2181 module_init(tcm_qla2xxx_init);
2182 module_exit(tcm_qla2xxx_exit);
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