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mfd: wm8350-i2c: Make sure the i2c regmap functions are compiled
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob783a0a9f8577750f273040247b6b56910d4c0a99
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 struct workqueue_struct *tcm_qla2xxx_free_wq;
54 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
55
56 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
57 {
58 return 1;
59 }
60
61 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
62 {
63 return 0;
64 }
65
66 /*
67 * Parse WWN.
68 * If strict, we require lower-case hex and colon separators to be sure
69 * the name is the same as what would be generated by ft_format_wwn()
70 * so the name and wwn are mapped one-to-one.
71 */
72 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
73 {
74 const char *cp;
75 char c;
76 u32 nibble;
77 u32 byte = 0;
78 u32 pos = 0;
79 u32 err;
80
81 *wwn = 0;
82 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
83 c = *cp;
84 if (c == '\n' && cp[1] == '\0')
85 continue;
86 if (strict && pos++ == 2 && byte++ < 7) {
87 pos = 0;
88 if (c == ':')
89 continue;
90 err = 1;
91 goto fail;
92 }
93 if (c == '\0') {
94 err = 2;
95 if (strict && byte != 8)
96 goto fail;
97 return cp - name;
98 }
99 err = 3;
100 if (isdigit(c))
101 nibble = c - '0';
102 else if (isxdigit(c) && (islower(c) || !strict))
103 nibble = tolower(c) - 'a' + 10;
104 else
105 goto fail;
106 *wwn = (*wwn << 4) | nibble;
107 }
108 err = 4;
109 fail:
110 pr_debug("err %u len %zu pos %u byte %u\n",
111 err, cp - name, pos, byte);
112 return -1;
113 }
114
115 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
116 {
117 u8 b[8];
118
119 put_unaligned_be64(wwn, b);
120 return snprintf(buf, len,
121 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
122 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
123 }
124
125 static char *tcm_qla2xxx_get_fabric_name(void)
126 {
127 return "qla2xxx";
128 }
129
130 /*
131 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
132 */
133 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
134 {
135 unsigned int i, j;
136 u8 wwn[8];
137
138 memset(wwn, 0, sizeof(wwn));
139
140 /* Validate and store the new name */
141 for (i = 0, j = 0; i < 16; i++) {
142 int value;
143
144 value = hex_to_bin(*ns++);
145 if (value >= 0)
146 j = (j << 4) | value;
147 else
148 return -EINVAL;
149
150 if (i % 2) {
151 wwn[i/2] = j & 0xff;
152 j = 0;
153 }
154 }
155
156 *nm = wwn_to_u64(wwn);
157 return 0;
158 }
159
160 /*
161 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
162 * store_fc_host_vport_create()
163 */
164 static int tcm_qla2xxx_npiv_parse_wwn(
165 const char *name,
166 size_t count,
167 u64 *wwpn,
168 u64 *wwnn)
169 {
170 unsigned int cnt = count;
171 int rc;
172
173 *wwpn = 0;
174 *wwnn = 0;
175
176 /* count may include a LF at end of string */
177 if (name[cnt-1] == '\n')
178 cnt--;
179
180 /* validate we have enough characters for WWPN */
181 if ((cnt != (16+1+16)) || (name[16] != ':'))
182 return -EINVAL;
183
184 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
185 if (rc != 0)
186 return rc;
187
188 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
189 if (rc != 0)
190 return rc;
191
192 return 0;
193 }
194
195 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
196 u64 wwpn, u64 wwnn)
197 {
198 u8 b[8], b2[8];
199
200 put_unaligned_be64(wwpn, b);
201 put_unaligned_be64(wwnn, b2);
202 return snprintf(buf, len,
203 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
204 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
205 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
206 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
207 }
208
209 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
210 {
211 return "qla2xxx_npiv";
212 }
213
214 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
215 {
216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
217 struct tcm_qla2xxx_tpg, se_tpg);
218 struct tcm_qla2xxx_lport *lport = tpg->lport;
219 u8 proto_id;
220
221 switch (lport->lport_proto_id) {
222 case SCSI_PROTOCOL_FCP:
223 default:
224 proto_id = fc_get_fabric_proto_ident(se_tpg);
225 break;
226 }
227
228 return proto_id;
229 }
230
231 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
232 {
233 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
234 struct tcm_qla2xxx_tpg, se_tpg);
235 struct tcm_qla2xxx_lport *lport = tpg->lport;
236
237 return lport->lport_naa_name;
238 }
239
240 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
241 {
242 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
243 struct tcm_qla2xxx_tpg, se_tpg);
244 struct tcm_qla2xxx_lport *lport = tpg->lport;
245
246 return &lport->lport_npiv_name[0];
247 }
248
249 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
250 {
251 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
252 struct tcm_qla2xxx_tpg, se_tpg);
253 return tpg->lport_tpgt;
254 }
255
256 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
257 {
258 return 1;
259 }
260
261 static u32 tcm_qla2xxx_get_pr_transport_id(
262 struct se_portal_group *se_tpg,
263 struct se_node_acl *se_nacl,
264 struct t10_pr_registration *pr_reg,
265 int *format_code,
266 unsigned char *buf)
267 {
268 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
269 struct tcm_qla2xxx_tpg, se_tpg);
270 struct tcm_qla2xxx_lport *lport = tpg->lport;
271 int ret = 0;
272
273 switch (lport->lport_proto_id) {
274 case SCSI_PROTOCOL_FCP:
275 default:
276 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
277 format_code, buf);
278 break;
279 }
280
281 return ret;
282 }
283
284 static u32 tcm_qla2xxx_get_pr_transport_id_len(
285 struct se_portal_group *se_tpg,
286 struct se_node_acl *se_nacl,
287 struct t10_pr_registration *pr_reg,
288 int *format_code)
289 {
290 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
291 struct tcm_qla2xxx_tpg, se_tpg);
292 struct tcm_qla2xxx_lport *lport = tpg->lport;
293 int ret = 0;
294
295 switch (lport->lport_proto_id) {
296 case SCSI_PROTOCOL_FCP:
297 default:
298 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
299 format_code);
300 break;
301 }
302
303 return ret;
304 }
305
306 static char *tcm_qla2xxx_parse_pr_out_transport_id(
307 struct se_portal_group *se_tpg,
308 const char *buf,
309 u32 *out_tid_len,
310 char **port_nexus_ptr)
311 {
312 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
313 struct tcm_qla2xxx_tpg, se_tpg);
314 struct tcm_qla2xxx_lport *lport = tpg->lport;
315 char *tid = NULL;
316
317 switch (lport->lport_proto_id) {
318 case SCSI_PROTOCOL_FCP:
319 default:
320 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
321 port_nexus_ptr);
322 break;
323 }
324
325 return tid;
326 }
327
328 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
329 {
330 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
331 struct tcm_qla2xxx_tpg, se_tpg);
332
333 return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
334 }
335
336 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
337 {
338 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
339 struct tcm_qla2xxx_tpg, se_tpg);
340
341 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
342 }
343
344 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
345 {
346 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
347 struct tcm_qla2xxx_tpg, se_tpg);
348
349 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
350 }
351
352 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
353 {
354 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
355 struct tcm_qla2xxx_tpg, se_tpg);
356
357 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
358 }
359
360 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
361 {
362 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
363 struct tcm_qla2xxx_tpg, se_tpg);
364
365 return QLA_TPG_ATTRIB(tpg)->demo_mode_login_only;
366 }
367
368 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
369 struct se_portal_group *se_tpg)
370 {
371 struct tcm_qla2xxx_nacl *nacl;
372
373 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
374 if (!nacl) {
375 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
376 return NULL;
377 }
378
379 return &nacl->se_node_acl;
380 }
381
382 static void tcm_qla2xxx_release_fabric_acl(
383 struct se_portal_group *se_tpg,
384 struct se_node_acl *se_nacl)
385 {
386 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
387 struct tcm_qla2xxx_nacl, se_node_acl);
388 kfree(nacl);
389 }
390
391 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
392 {
393 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
394 struct tcm_qla2xxx_tpg, se_tpg);
395
396 return tpg->lport_tpgt;
397 }
398
399 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
400 {
401 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
402 struct qla_tgt_mgmt_cmd, free_work);
403
404 transport_generic_free_cmd(&mcmd->se_cmd, 0);
405 }
406
407 /*
408 * Called from qla_target_template->free_mcmd(), and will call
409 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
410 * release callback. qla_hw_data->hardware_lock is expected to be held
411 */
412 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
413 {
414 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
415 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
416 }
417
418 static void tcm_qla2xxx_complete_free(struct work_struct *work)
419 {
420 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
421
422 transport_generic_free_cmd(&cmd->se_cmd, 0);
423 }
424
425 /*
426 * Called from qla_target_template->free_cmd(), and will call
427 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
428 * release callback. qla_hw_data->hardware_lock is expected to be held
429 */
430 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
431 {
432 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
433 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
434 }
435
436 /*
437 * Called from struct target_core_fabric_ops->check_stop_free() context
438 */
439 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
440 {
441 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
442 }
443
444 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
445 * fabric descriptor @se_cmd command to release
446 */
447 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
448 {
449 struct qla_tgt_cmd *cmd;
450
451 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
452 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
453 struct qla_tgt_mgmt_cmd, se_cmd);
454 qlt_free_mcmd(mcmd);
455 return;
456 }
457
458 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
459 qlt_free_cmd(cmd);
460 }
461
462 static int tcm_qla2xxx_shutdown_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 target_sess_cmd_list_set_waiting(se_sess);
473 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
474
475 return 1;
476 }
477
478 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
479 {
480 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
481 struct scsi_qla_host *vha;
482 unsigned long flags;
483
484 BUG_ON(!sess);
485 vha = sess->vha;
486
487 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
488 qlt_unreg_sess(sess);
489 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
490 }
491
492 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
493 {
494 return 0;
495 }
496
497 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
498 {
499 struct qla_tgt_cmd *cmd = container_of(se_cmd,
500 struct qla_tgt_cmd, se_cmd);
501
502 cmd->bufflen = se_cmd->data_length;
503 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
504
505 cmd->sg_cnt = se_cmd->t_data_nents;
506 cmd->sg = se_cmd->t_data_sg;
507
508 /*
509 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
510 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
511 */
512 return qlt_rdy_to_xfer(cmd);
513 }
514
515 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
516 {
517 unsigned long flags;
518 /*
519 * Check for WRITE_PENDING status to determine if we need to wait for
520 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
521 */
522 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
523 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
524 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
525 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
526 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
527 3000);
528 return 0;
529 }
530 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
531
532 return 0;
533 }
534
535 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
536 {
537 return;
538 }
539
540 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
541 {
542 struct qla_tgt_cmd *cmd = container_of(se_cmd,
543 struct qla_tgt_cmd, se_cmd);
544
545 return cmd->tag;
546 }
547
548 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
549 {
550 return 0;
551 }
552
553 /*
554 * Called from process context in qla_target.c:qlt_do_work() code
555 */
556 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
557 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
558 int data_dir, int bidi)
559 {
560 struct se_cmd *se_cmd = &cmd->se_cmd;
561 struct se_session *se_sess;
562 struct qla_tgt_sess *sess;
563 int flags = TARGET_SCF_ACK_KREF;
564
565 if (bidi)
566 flags |= TARGET_SCF_BIDI_OP;
567
568 sess = cmd->sess;
569 if (!sess) {
570 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
571 return -EINVAL;
572 }
573
574 se_sess = sess->se_sess;
575 if (!se_sess) {
576 pr_err("Unable to locate active struct se_session\n");
577 return -EINVAL;
578 }
579
580 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
581 cmd->unpacked_lun, data_length, fcp_task_attr,
582 data_dir, flags);
583 }
584
585 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
586 {
587 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
588
589 /*
590 * Ensure that the complete FCP WRITE payload has been received.
591 * Otherwise return an exception via CHECK_CONDITION status.
592 */
593 if (!cmd->write_data_transferred) {
594 /*
595 * Check if se_cmd has already been aborted via LUN_RESET, and
596 * waiting upon completion in tcm_qla2xxx_write_pending_status()
597 */
598 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
599 complete(&cmd->se_cmd.t_transport_stop_comp);
600 return;
601 }
602
603 transport_generic_request_failure(&cmd->se_cmd,
604 TCM_CHECK_CONDITION_ABORT_CMD);
605 return;
606 }
607
608 return target_execute_cmd(&cmd->se_cmd);
609 }
610
611 /*
612 * Called from qla_target.c:qlt_do_ctio_completion()
613 */
614 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
615 {
616 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
617 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
618 }
619
620 /*
621 * Called from qla_target.c:qlt_issue_task_mgmt()
622 */
623 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
624 uint8_t tmr_func, uint32_t tag)
625 {
626 struct qla_tgt_sess *sess = mcmd->sess;
627 struct se_cmd *se_cmd = &mcmd->se_cmd;
628
629 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
630 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
631 }
632
633 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
634 {
635 struct qla_tgt_cmd *cmd = container_of(se_cmd,
636 struct qla_tgt_cmd, se_cmd);
637
638 cmd->bufflen = se_cmd->data_length;
639 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
640 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
641
642 cmd->sg_cnt = se_cmd->t_data_nents;
643 cmd->sg = se_cmd->t_data_sg;
644 cmd->offset = 0;
645
646 /*
647 * Now queue completed DATA_IN the qla2xxx LLD and response ring
648 */
649 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
650 se_cmd->scsi_status);
651 }
652
653 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
654 {
655 struct qla_tgt_cmd *cmd = container_of(se_cmd,
656 struct qla_tgt_cmd, se_cmd);
657 int xmit_type = QLA_TGT_XMIT_STATUS;
658
659 cmd->bufflen = se_cmd->data_length;
660 cmd->sg = NULL;
661 cmd->sg_cnt = 0;
662 cmd->offset = 0;
663 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
664 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
665
666 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
667 /*
668 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
669 * for qla_tgt_xmit_response LLD code
670 */
671 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
672 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
673 se_cmd->residual_count = 0;
674 }
675 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
676 se_cmd->residual_count += se_cmd->data_length;
677
678 cmd->bufflen = 0;
679 }
680 /*
681 * Now queue status response to qla2xxx LLD code and response ring
682 */
683 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
684 }
685
686 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
687 {
688 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
689 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
690 struct qla_tgt_mgmt_cmd, se_cmd);
691
692 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
693 mcmd, se_tmr->function, se_tmr->response);
694 /*
695 * Do translation between TCM TM response codes and
696 * QLA2xxx FC TM response codes.
697 */
698 switch (se_tmr->response) {
699 case TMR_FUNCTION_COMPLETE:
700 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
701 break;
702 case TMR_TASK_DOES_NOT_EXIST:
703 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
704 break;
705 case TMR_FUNCTION_REJECTED:
706 mcmd->fc_tm_rsp = FC_TM_REJECT;
707 break;
708 case TMR_LUN_DOES_NOT_EXIST:
709 default:
710 mcmd->fc_tm_rsp = FC_TM_FAILED;
711 break;
712 }
713 /*
714 * Queue the TM response to QLA2xxx LLD to build a
715 * CTIO response packet.
716 */
717 qlt_xmit_tm_rsp(mcmd);
718 }
719
720 /* Local pointer to allocated TCM configfs fabric module */
721 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
722 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
723
724 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
725 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
726 /*
727 * Expected to be called with struct qla_hw_data->hardware_lock held
728 */
729 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
730 {
731 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
732 struct se_portal_group *se_tpg = se_nacl->se_tpg;
733 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
734 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
735 struct tcm_qla2xxx_lport, lport_wwn);
736 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
737 struct tcm_qla2xxx_nacl, se_node_acl);
738 void *node;
739
740 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
741
742 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
743 if (WARN_ON(node && (node != se_nacl))) {
744 /*
745 * The nacl no longer matches what we think it should be.
746 * Most likely a new dynamic acl has been added while
747 * someone dropped the hardware lock. It clearly is a
748 * bug elsewhere, but this bit can't make things worse.
749 */
750 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
751 node, GFP_ATOMIC);
752 }
753
754 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
755 se_nacl, nacl->nport_wwnn, nacl->nport_id);
756 /*
757 * Now clear the se_nacl and session pointers from our HW lport lookup
758 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
759 *
760 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
761 * target_wait_for_sess_cmds() before the session waits for outstanding
762 * I/O to complete, to avoid a race between session shutdown execution
763 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
764 */
765 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
766 }
767
768 static void tcm_qla2xxx_release_session(struct kref *kref)
769 {
770 struct se_session *se_sess = container_of(kref,
771 struct se_session, sess_kref);
772
773 qlt_unreg_sess(se_sess->fabric_sess_ptr);
774 }
775
776 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
777 {
778 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
779 struct qla_hw_data *ha = sess->vha->hw;
780 unsigned long flags;
781
782 spin_lock_irqsave(&ha->hardware_lock, flags);
783 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
784 spin_unlock_irqrestore(&ha->hardware_lock, flags);
785 }
786
787 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
788 {
789 assert_spin_locked(&sess->vha->hw->hardware_lock);
790 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
791 }
792
793 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
794 {
795 assert_spin_locked(&sess->vha->hw->hardware_lock);
796 target_sess_cmd_list_set_waiting(sess->se_sess);
797 }
798
799 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
800 struct se_portal_group *se_tpg,
801 struct config_group *group,
802 const char *name)
803 {
804 struct se_node_acl *se_nacl, *se_nacl_new;
805 struct tcm_qla2xxx_nacl *nacl;
806 u64 wwnn;
807 u32 qla2xxx_nexus_depth;
808
809 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
810 return ERR_PTR(-EINVAL);
811
812 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
813 if (!se_nacl_new)
814 return ERR_PTR(-ENOMEM);
815 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
816 qla2xxx_nexus_depth = 1;
817
818 /*
819 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
820 * when converting a NodeACL from demo mode -> explict
821 */
822 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
823 name, qla2xxx_nexus_depth);
824 if (IS_ERR(se_nacl)) {
825 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
826 return se_nacl;
827 }
828 /*
829 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
830 */
831 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
832 nacl->nport_wwnn = wwnn;
833 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
834
835 return se_nacl;
836 }
837
838 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
839 {
840 struct se_portal_group *se_tpg = se_acl->se_tpg;
841 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
842 struct tcm_qla2xxx_nacl, se_node_acl);
843
844 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
845 kfree(nacl);
846 }
847
848 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
849
850 #define DEF_QLA_TPG_ATTRIB(name) \
851 \
852 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
853 struct se_portal_group *se_tpg, \
854 char *page) \
855 { \
856 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
857 struct tcm_qla2xxx_tpg, se_tpg); \
858 \
859 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
860 } \
861 \
862 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
863 struct se_portal_group *se_tpg, \
864 const char *page, \
865 size_t count) \
866 { \
867 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
868 struct tcm_qla2xxx_tpg, se_tpg); \
869 unsigned long val; \
870 int ret; \
871 \
872 ret = kstrtoul(page, 0, &val); \
873 if (ret < 0) { \
874 pr_err("kstrtoul() failed with" \
875 " ret: %d\n", ret); \
876 return -EINVAL; \
877 } \
878 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
879 \
880 return (!ret) ? count : -EINVAL; \
881 }
882
883 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
884 \
885 static int tcm_qla2xxx_set_attrib_##_name( \
886 struct tcm_qla2xxx_tpg *tpg, \
887 unsigned long val) \
888 { \
889 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
890 \
891 if ((val != 0) && (val != 1)) { \
892 pr_err("Illegal boolean value %lu\n", val); \
893 return -EINVAL; \
894 } \
895 \
896 a->_name = val; \
897 return 0; \
898 }
899
900 #define QLA_TPG_ATTR(_name, _mode) \
901 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
902
903 /*
904 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
905 */
906 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
907 DEF_QLA_TPG_ATTRIB(generate_node_acls);
908 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
909
910 /*
911 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
912 */
913 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
914 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
915 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
916
917 /*
918 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
919 */
920 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
921 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
922 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
923
924 /*
925 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
926 */
927 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
928 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
929 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
930
931 /*
932 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
933 */
934 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
935 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
936 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
937
938 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
939 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
940 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
941 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
942 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
943 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
944 NULL,
945 };
946
947 /* End items for tcm_qla2xxx_tpg_attrib_cit */
948
949 static ssize_t tcm_qla2xxx_tpg_show_enable(
950 struct se_portal_group *se_tpg,
951 char *page)
952 {
953 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
954 struct tcm_qla2xxx_tpg, se_tpg);
955
956 return snprintf(page, PAGE_SIZE, "%d\n",
957 atomic_read(&tpg->lport_tpg_enabled));
958 }
959
960 static ssize_t tcm_qla2xxx_tpg_store_enable(
961 struct se_portal_group *se_tpg,
962 const char *page,
963 size_t count)
964 {
965 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
966 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
967 struct tcm_qla2xxx_lport, lport_wwn);
968 struct scsi_qla_host *vha = lport->qla_vha;
969 struct qla_hw_data *ha = vha->hw;
970 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
971 struct tcm_qla2xxx_tpg, se_tpg);
972 unsigned long op;
973 int rc;
974
975 rc = kstrtoul(page, 0, &op);
976 if (rc < 0) {
977 pr_err("kstrtoul() returned %d\n", rc);
978 return -EINVAL;
979 }
980 if ((op != 1) && (op != 0)) {
981 pr_err("Illegal value for tpg_enable: %lu\n", op);
982 return -EINVAL;
983 }
984
985 if (op) {
986 atomic_set(&tpg->lport_tpg_enabled, 1);
987 qlt_enable_vha(vha);
988 } else {
989 if (!ha->tgt.qla_tgt) {
990 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
991 return -ENODEV;
992 }
993 atomic_set(&tpg->lport_tpg_enabled, 0);
994 qlt_stop_phase1(ha->tgt.qla_tgt);
995 }
996
997 return count;
998 }
999
1000 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1001
1002 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1003 &tcm_qla2xxx_tpg_enable.attr,
1004 NULL,
1005 };
1006
1007 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1008 struct se_wwn *wwn,
1009 struct config_group *group,
1010 const char *name)
1011 {
1012 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1013 struct tcm_qla2xxx_lport, lport_wwn);
1014 struct tcm_qla2xxx_tpg *tpg;
1015 unsigned long tpgt;
1016 int ret;
1017
1018 if (strstr(name, "tpgt_") != name)
1019 return ERR_PTR(-EINVAL);
1020 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1021 return ERR_PTR(-EINVAL);
1022
1023 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1024 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1025 return ERR_PTR(-ENOSYS);
1026 }
1027
1028 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1029 if (!tpg) {
1030 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1031 return ERR_PTR(-ENOMEM);
1032 }
1033 tpg->lport = lport;
1034 tpg->lport_tpgt = tpgt;
1035 /*
1036 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1037 * NodeACLs
1038 */
1039 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1040 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1041 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1042 QLA_TPG_ATTRIB(tpg)->demo_mode_login_only = 1;
1043
1044 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1045 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1046 if (ret < 0) {
1047 kfree(tpg);
1048 return NULL;
1049 }
1050 /*
1051 * Setup local TPG=1 pointer for non NPIV mode.
1052 */
1053 if (lport->qla_npiv_vp == NULL)
1054 lport->tpg_1 = tpg;
1055
1056 return &tpg->se_tpg;
1057 }
1058
1059 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1060 {
1061 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1062 struct tcm_qla2xxx_tpg, se_tpg);
1063 struct tcm_qla2xxx_lport *lport = tpg->lport;
1064 struct scsi_qla_host *vha = lport->qla_vha;
1065 struct qla_hw_data *ha = vha->hw;
1066 /*
1067 * Call into qla2x_target.c LLD logic to shutdown the active
1068 * FC Nexuses and disable target mode operation for this qla_hw_data
1069 */
1070 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1071 qlt_stop_phase1(ha->tgt.qla_tgt);
1072
1073 core_tpg_deregister(se_tpg);
1074 /*
1075 * Clear local TPG=1 pointer for non NPIV mode.
1076 */
1077 if (lport->qla_npiv_vp == NULL)
1078 lport->tpg_1 = NULL;
1079
1080 kfree(tpg);
1081 }
1082
1083 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1084 struct se_wwn *wwn,
1085 struct config_group *group,
1086 const char *name)
1087 {
1088 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1089 struct tcm_qla2xxx_lport, lport_wwn);
1090 struct tcm_qla2xxx_tpg *tpg;
1091 unsigned long tpgt;
1092 int ret;
1093
1094 if (strstr(name, "tpgt_") != name)
1095 return ERR_PTR(-EINVAL);
1096 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1097 return ERR_PTR(-EINVAL);
1098
1099 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1100 if (!tpg) {
1101 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1102 return ERR_PTR(-ENOMEM);
1103 }
1104 tpg->lport = lport;
1105 tpg->lport_tpgt = tpgt;
1106
1107 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1108 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1109 if (ret < 0) {
1110 kfree(tpg);
1111 return NULL;
1112 }
1113 return &tpg->se_tpg;
1114 }
1115
1116 /*
1117 * Expected to be called with struct qla_hw_data->hardware_lock held
1118 */
1119 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1120 scsi_qla_host_t *vha,
1121 const uint8_t *s_id)
1122 {
1123 struct qla_hw_data *ha = vha->hw;
1124 struct tcm_qla2xxx_lport *lport;
1125 struct se_node_acl *se_nacl;
1126 struct tcm_qla2xxx_nacl *nacl;
1127 u32 key;
1128
1129 lport = ha->tgt.target_lport_ptr;
1130 if (!lport) {
1131 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1132 dump_stack();
1133 return NULL;
1134 }
1135
1136 key = (((unsigned long)s_id[0] << 16) |
1137 ((unsigned long)s_id[1] << 8) |
1138 (unsigned long)s_id[2]);
1139 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1140
1141 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1142 if (!se_nacl) {
1143 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1144 return NULL;
1145 }
1146 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1147 se_nacl, se_nacl->initiatorname);
1148
1149 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1150 if (!nacl->qla_tgt_sess) {
1151 pr_err("Unable to locate struct qla_tgt_sess\n");
1152 return NULL;
1153 }
1154
1155 return nacl->qla_tgt_sess;
1156 }
1157
1158 /*
1159 * Expected to be called with struct qla_hw_data->hardware_lock held
1160 */
1161 static void tcm_qla2xxx_set_sess_by_s_id(
1162 struct tcm_qla2xxx_lport *lport,
1163 struct se_node_acl *new_se_nacl,
1164 struct tcm_qla2xxx_nacl *nacl,
1165 struct se_session *se_sess,
1166 struct qla_tgt_sess *qla_tgt_sess,
1167 uint8_t *s_id)
1168 {
1169 u32 key;
1170 void *slot;
1171 int rc;
1172
1173 key = (((unsigned long)s_id[0] << 16) |
1174 ((unsigned long)s_id[1] << 8) |
1175 (unsigned long)s_id[2]);
1176 pr_debug("set_sess_by_s_id: %06x\n", key);
1177
1178 slot = btree_lookup32(&lport->lport_fcport_map, key);
1179 if (!slot) {
1180 if (new_se_nacl) {
1181 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1182 nacl->nport_id = key;
1183 rc = btree_insert32(&lport->lport_fcport_map, key,
1184 new_se_nacl, GFP_ATOMIC);
1185 if (rc)
1186 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1187 (int)key);
1188 } else {
1189 pr_debug("Wiping nonexisting fc_port entry\n");
1190 }
1191
1192 qla_tgt_sess->se_sess = se_sess;
1193 nacl->qla_tgt_sess = qla_tgt_sess;
1194 return;
1195 }
1196
1197 if (nacl->qla_tgt_sess) {
1198 if (new_se_nacl == NULL) {
1199 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1200 btree_remove32(&lport->lport_fcport_map, key);
1201 nacl->qla_tgt_sess = NULL;
1202 return;
1203 }
1204 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1205 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1206 qla_tgt_sess->se_sess = se_sess;
1207 nacl->qla_tgt_sess = qla_tgt_sess;
1208 return;
1209 }
1210
1211 if (new_se_nacl == NULL) {
1212 pr_debug("Clearing existing fc_port entry\n");
1213 btree_remove32(&lport->lport_fcport_map, key);
1214 return;
1215 }
1216
1217 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1218 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1219 qla_tgt_sess->se_sess = se_sess;
1220 nacl->qla_tgt_sess = qla_tgt_sess;
1221
1222 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1223 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1224 }
1225
1226 /*
1227 * Expected to be called with struct qla_hw_data->hardware_lock held
1228 */
1229 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1230 scsi_qla_host_t *vha,
1231 const uint16_t loop_id)
1232 {
1233 struct qla_hw_data *ha = vha->hw;
1234 struct tcm_qla2xxx_lport *lport;
1235 struct se_node_acl *se_nacl;
1236 struct tcm_qla2xxx_nacl *nacl;
1237 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1238
1239 lport = ha->tgt.target_lport_ptr;
1240 if (!lport) {
1241 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1242 dump_stack();
1243 return NULL;
1244 }
1245
1246 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1247
1248 fc_loopid = lport->lport_loopid_map + loop_id;
1249 se_nacl = fc_loopid->se_nacl;
1250 if (!se_nacl) {
1251 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1252 loop_id);
1253 return NULL;
1254 }
1255
1256 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1257
1258 if (!nacl->qla_tgt_sess) {
1259 pr_err("Unable to locate struct qla_tgt_sess\n");
1260 return NULL;
1261 }
1262
1263 return nacl->qla_tgt_sess;
1264 }
1265
1266 /*
1267 * Expected to be called with struct qla_hw_data->hardware_lock held
1268 */
1269 static void tcm_qla2xxx_set_sess_by_loop_id(
1270 struct tcm_qla2xxx_lport *lport,
1271 struct se_node_acl *new_se_nacl,
1272 struct tcm_qla2xxx_nacl *nacl,
1273 struct se_session *se_sess,
1274 struct qla_tgt_sess *qla_tgt_sess,
1275 uint16_t loop_id)
1276 {
1277 struct se_node_acl *saved_nacl;
1278 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1279
1280 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1281
1282 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1283 lport->lport_loopid_map)[loop_id];
1284
1285 saved_nacl = fc_loopid->se_nacl;
1286 if (!saved_nacl) {
1287 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1288 fc_loopid->se_nacl = new_se_nacl;
1289 if (qla_tgt_sess->se_sess != se_sess)
1290 qla_tgt_sess->se_sess = se_sess;
1291 if (nacl->qla_tgt_sess != qla_tgt_sess)
1292 nacl->qla_tgt_sess = qla_tgt_sess;
1293 return;
1294 }
1295
1296 if (nacl->qla_tgt_sess) {
1297 if (new_se_nacl == NULL) {
1298 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1299 fc_loopid->se_nacl = NULL;
1300 nacl->qla_tgt_sess = NULL;
1301 return;
1302 }
1303
1304 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1305 fc_loopid->se_nacl = new_se_nacl;
1306 if (qla_tgt_sess->se_sess != se_sess)
1307 qla_tgt_sess->se_sess = se_sess;
1308 if (nacl->qla_tgt_sess != qla_tgt_sess)
1309 nacl->qla_tgt_sess = qla_tgt_sess;
1310 return;
1311 }
1312
1313 if (new_se_nacl == NULL) {
1314 pr_debug("Clearing fc_loopid->se_nacl\n");
1315 fc_loopid->se_nacl = NULL;
1316 return;
1317 }
1318
1319 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1320 fc_loopid->se_nacl = new_se_nacl;
1321 if (qla_tgt_sess->se_sess != se_sess)
1322 qla_tgt_sess->se_sess = se_sess;
1323 if (nacl->qla_tgt_sess != qla_tgt_sess)
1324 nacl->qla_tgt_sess = qla_tgt_sess;
1325
1326 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1327 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1328 }
1329
1330 /*
1331 * Should always be called with qla_hw_data->hardware_lock held.
1332 */
1333 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1334 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1335 {
1336 struct se_session *se_sess = sess->se_sess;
1337 unsigned char be_sid[3];
1338
1339 be_sid[0] = sess->s_id.b.domain;
1340 be_sid[1] = sess->s_id.b.area;
1341 be_sid[2] = sess->s_id.b.al_pa;
1342
1343 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1344 sess, be_sid);
1345 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1346 sess, sess->loop_id);
1347 }
1348
1349 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1350 {
1351 struct qla_tgt *tgt = sess->tgt;
1352 struct qla_hw_data *ha = tgt->ha;
1353 struct se_session *se_sess;
1354 struct se_node_acl *se_nacl;
1355 struct tcm_qla2xxx_lport *lport;
1356 struct tcm_qla2xxx_nacl *nacl;
1357
1358 BUG_ON(in_interrupt());
1359
1360 se_sess = sess->se_sess;
1361 if (!se_sess) {
1362 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1363 dump_stack();
1364 return;
1365 }
1366 se_nacl = se_sess->se_node_acl;
1367 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1368
1369 lport = ha->tgt.target_lport_ptr;
1370 if (!lport) {
1371 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1372 dump_stack();
1373 return;
1374 }
1375 target_wait_for_sess_cmds(se_sess);
1376
1377 transport_deregister_session_configfs(sess->se_sess);
1378 transport_deregister_session(sess->se_sess);
1379 }
1380
1381 /*
1382 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1383 * to locate struct se_node_acl
1384 */
1385 static int tcm_qla2xxx_check_initiator_node_acl(
1386 scsi_qla_host_t *vha,
1387 unsigned char *fc_wwpn,
1388 void *qla_tgt_sess,
1389 uint8_t *s_id,
1390 uint16_t loop_id)
1391 {
1392 struct qla_hw_data *ha = vha->hw;
1393 struct tcm_qla2xxx_lport *lport;
1394 struct tcm_qla2xxx_tpg *tpg;
1395 struct tcm_qla2xxx_nacl *nacl;
1396 struct se_portal_group *se_tpg;
1397 struct se_node_acl *se_nacl;
1398 struct se_session *se_sess;
1399 struct qla_tgt_sess *sess = qla_tgt_sess;
1400 unsigned char port_name[36];
1401 unsigned long flags;
1402
1403 lport = ha->tgt.target_lport_ptr;
1404 if (!lport) {
1405 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1406 dump_stack();
1407 return -EINVAL;
1408 }
1409 /*
1410 * Locate the TPG=1 reference..
1411 */
1412 tpg = lport->tpg_1;
1413 if (!tpg) {
1414 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1415 return -EINVAL;
1416 }
1417 se_tpg = &tpg->se_tpg;
1418
1419 se_sess = transport_init_session();
1420 if (IS_ERR(se_sess)) {
1421 pr_err("Unable to initialize struct se_session\n");
1422 return PTR_ERR(se_sess);
1423 }
1424 /*
1425 * Format the FCP Initiator port_name into colon seperated values to
1426 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1427 */
1428 memset(&port_name, 0, 36);
1429 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1430 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1431 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1432 /*
1433 * Locate our struct se_node_acl either from an explict NodeACL created
1434 * via ConfigFS, or via running in TPG demo mode.
1435 */
1436 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1437 port_name);
1438 if (!se_sess->se_node_acl) {
1439 transport_free_session(se_sess);
1440 return -EINVAL;
1441 }
1442 se_nacl = se_sess->se_node_acl;
1443 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1444 /*
1445 * And now setup the new se_nacl and session pointers into our HW lport
1446 * mappings for fabric S_ID and LOOP_ID.
1447 */
1448 spin_lock_irqsave(&ha->hardware_lock, flags);
1449 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1450 qla_tgt_sess, s_id);
1451 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1452 qla_tgt_sess, loop_id);
1453 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1454 /*
1455 * Finally register the new FC Nexus with TCM
1456 */
1457 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1458
1459 return 0;
1460 }
1461
1462 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1463 uint16_t loop_id, bool conf_compl_supported)
1464 {
1465 struct qla_tgt *tgt = sess->tgt;
1466 struct qla_hw_data *ha = tgt->ha;
1467 struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
1468 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1469 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1470 struct tcm_qla2xxx_nacl, se_node_acl);
1471 u32 key;
1472
1473
1474 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1475 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1476 sess, sess->port_name,
1477 sess->loop_id, loop_id, sess->s_id.b.domain,
1478 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1479 s_id.b.area, s_id.b.al_pa);
1480
1481 if (sess->loop_id != loop_id) {
1482 /*
1483 * Because we can shuffle loop IDs around and we
1484 * update different sessions non-atomically, we might
1485 * have overwritten this session's old loop ID
1486 * already, and we might end up overwriting some other
1487 * session that will be updated later. So we have to
1488 * be extra careful and we can't warn about those things...
1489 */
1490 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1491 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1492
1493 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1494
1495 sess->loop_id = loop_id;
1496 }
1497
1498 if (sess->s_id.b24 != s_id.b24) {
1499 key = (((u32) sess->s_id.b.domain << 16) |
1500 ((u32) sess->s_id.b.area << 8) |
1501 ((u32) sess->s_id.b.al_pa));
1502
1503 if (btree_lookup32(&lport->lport_fcport_map, key))
1504 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1505 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1506 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1507 else
1508 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1509 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1510
1511 key = (((u32) s_id.b.domain << 16) |
1512 ((u32) s_id.b.area << 8) |
1513 ((u32) s_id.b.al_pa));
1514
1515 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1516 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1517 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1518 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1519 } else {
1520 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1521 }
1522
1523 sess->s_id = s_id;
1524 nacl->nport_id = key;
1525 }
1526
1527 sess->conf_compl_supported = conf_compl_supported;
1528 }
1529
1530 /*
1531 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1532 */
1533 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1534 .handle_cmd = tcm_qla2xxx_handle_cmd,
1535 .handle_data = tcm_qla2xxx_handle_data,
1536 .handle_tmr = tcm_qla2xxx_handle_tmr,
1537 .free_cmd = tcm_qla2xxx_free_cmd,
1538 .free_mcmd = tcm_qla2xxx_free_mcmd,
1539 .free_session = tcm_qla2xxx_free_session,
1540 .update_sess = tcm_qla2xxx_update_sess,
1541 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1542 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1543 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1544 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1545 .put_sess = tcm_qla2xxx_put_sess,
1546 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1547 };
1548
1549 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1550 {
1551 int rc;
1552
1553 rc = btree_init32(&lport->lport_fcport_map);
1554 if (rc) {
1555 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1556 return rc;
1557 }
1558
1559 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1560 65536);
1561 if (!lport->lport_loopid_map) {
1562 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1563 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1564 btree_destroy32(&lport->lport_fcport_map);
1565 return -ENOMEM;
1566 }
1567 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1568 * 65536);
1569 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1570 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1571 return 0;
1572 }
1573
1574 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1575 {
1576 struct qla_hw_data *ha = vha->hw;
1577 struct tcm_qla2xxx_lport *lport;
1578 /*
1579 * Setup local pointer to vha, NPIV VP pointer (if present) and
1580 * vha->tcm_lport pointer
1581 */
1582 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1583 lport->qla_vha = vha;
1584
1585 return 0;
1586 }
1587
1588 static struct se_wwn *tcm_qla2xxx_make_lport(
1589 struct target_fabric_configfs *tf,
1590 struct config_group *group,
1591 const char *name)
1592 {
1593 struct tcm_qla2xxx_lport *lport;
1594 u64 wwpn;
1595 int ret = -ENODEV;
1596
1597 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1598 return ERR_PTR(-EINVAL);
1599
1600 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1601 if (!lport) {
1602 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1603 return ERR_PTR(-ENOMEM);
1604 }
1605 lport->lport_wwpn = wwpn;
1606 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1607 wwpn);
1608 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1609
1610 ret = tcm_qla2xxx_init_lport(lport);
1611 if (ret != 0)
1612 goto out;
1613
1614 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1615 tcm_qla2xxx_lport_register_cb, lport);
1616 if (ret != 0)
1617 goto out_lport;
1618
1619 return &lport->lport_wwn;
1620 out_lport:
1621 vfree(lport->lport_loopid_map);
1622 btree_destroy32(&lport->lport_fcport_map);
1623 out:
1624 kfree(lport);
1625 return ERR_PTR(ret);
1626 }
1627
1628 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1629 {
1630 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1631 struct tcm_qla2xxx_lport, lport_wwn);
1632 struct scsi_qla_host *vha = lport->qla_vha;
1633 struct qla_hw_data *ha = vha->hw;
1634 struct se_node_acl *node;
1635 u32 key = 0;
1636
1637 /*
1638 * Call into qla2x_target.c LLD logic to complete the
1639 * shutdown of struct qla_tgt after the call to
1640 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1641 */
1642 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1643 qlt_stop_phase2(ha->tgt.qla_tgt);
1644
1645 qlt_lport_deregister(vha);
1646
1647 vfree(lport->lport_loopid_map);
1648 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1649 btree_remove32(&lport->lport_fcport_map, key);
1650 btree_destroy32(&lport->lport_fcport_map);
1651 kfree(lport);
1652 }
1653
1654 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1655 struct target_fabric_configfs *tf,
1656 struct config_group *group,
1657 const char *name)
1658 {
1659 struct tcm_qla2xxx_lport *lport;
1660 u64 npiv_wwpn, npiv_wwnn;
1661 int ret;
1662
1663 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1664 &npiv_wwpn, &npiv_wwnn) < 0)
1665 return ERR_PTR(-EINVAL);
1666
1667 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1668 if (!lport) {
1669 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1670 return ERR_PTR(-ENOMEM);
1671 }
1672 lport->lport_npiv_wwpn = npiv_wwpn;
1673 lport->lport_npiv_wwnn = npiv_wwnn;
1674 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1675 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1676 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1677
1678 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1679 ret = -ENOSYS;
1680 if (ret != 0)
1681 goto out;
1682
1683 return &lport->lport_wwn;
1684 out:
1685 kfree(lport);
1686 return ERR_PTR(ret);
1687 }
1688
1689 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1690 {
1691 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1692 struct tcm_qla2xxx_lport, lport_wwn);
1693 struct scsi_qla_host *vha = lport->qla_vha;
1694 struct Scsi_Host *sh = vha->host;
1695 /*
1696 * Notify libfc that we want to release the lport->npiv_vport
1697 */
1698 fc_vport_terminate(lport->npiv_vport);
1699
1700 scsi_host_put(sh);
1701 kfree(lport);
1702 }
1703
1704
1705 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1706 struct target_fabric_configfs *tf,
1707 char *page)
1708 {
1709 return sprintf(page,
1710 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1711 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1712 utsname()->machine);
1713 }
1714
1715 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1716
1717 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1718 &tcm_qla2xxx_wwn_version.attr,
1719 NULL,
1720 };
1721
1722 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1723 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1724 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1725 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1726 .tpg_get_tag = tcm_qla2xxx_get_tag,
1727 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1728 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1729 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1730 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1731 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1732 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1733 .tpg_check_demo_mode_write_protect =
1734 tcm_qla2xxx_check_demo_write_protect,
1735 .tpg_check_prod_mode_write_protect =
1736 tcm_qla2xxx_check_prod_write_protect,
1737 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1738 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1739 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1740 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1741 .check_stop_free = tcm_qla2xxx_check_stop_free,
1742 .release_cmd = tcm_qla2xxx_release_cmd,
1743 .put_session = tcm_qla2xxx_put_session,
1744 .shutdown_session = tcm_qla2xxx_shutdown_session,
1745 .close_session = tcm_qla2xxx_close_session,
1746 .sess_get_index = tcm_qla2xxx_sess_get_index,
1747 .sess_get_initiator_sid = NULL,
1748 .write_pending = tcm_qla2xxx_write_pending,
1749 .write_pending_status = tcm_qla2xxx_write_pending_status,
1750 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1751 .get_task_tag = tcm_qla2xxx_get_task_tag,
1752 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1753 .queue_data_in = tcm_qla2xxx_queue_data_in,
1754 .queue_status = tcm_qla2xxx_queue_status,
1755 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1756 /*
1757 * Setup function pointers for generic logic in
1758 * target_core_fabric_configfs.c
1759 */
1760 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1761 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1762 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1763 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1764 .fabric_post_link = NULL,
1765 .fabric_pre_unlink = NULL,
1766 .fabric_make_np = NULL,
1767 .fabric_drop_np = NULL,
1768 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1769 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1770 };
1771
1772 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1773 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1774 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1775 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1776 .tpg_get_tag = tcm_qla2xxx_get_tag,
1777 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1778 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1779 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1780 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1781 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1782 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1783 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1784 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1785 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1786 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1787 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1788 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1789 .release_cmd = tcm_qla2xxx_release_cmd,
1790 .put_session = tcm_qla2xxx_put_session,
1791 .shutdown_session = tcm_qla2xxx_shutdown_session,
1792 .close_session = tcm_qla2xxx_close_session,
1793 .sess_get_index = tcm_qla2xxx_sess_get_index,
1794 .sess_get_initiator_sid = NULL,
1795 .write_pending = tcm_qla2xxx_write_pending,
1796 .write_pending_status = tcm_qla2xxx_write_pending_status,
1797 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1798 .get_task_tag = tcm_qla2xxx_get_task_tag,
1799 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1800 .queue_data_in = tcm_qla2xxx_queue_data_in,
1801 .queue_status = tcm_qla2xxx_queue_status,
1802 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1803 /*
1804 * Setup function pointers for generic logic in
1805 * target_core_fabric_configfs.c
1806 */
1807 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1808 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1809 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1810 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1811 .fabric_post_link = NULL,
1812 .fabric_pre_unlink = NULL,
1813 .fabric_make_np = NULL,
1814 .fabric_drop_np = NULL,
1815 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1816 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1817 };
1818
1819 static int tcm_qla2xxx_register_configfs(void)
1820 {
1821 struct target_fabric_configfs *fabric, *npiv_fabric;
1822 int ret;
1823
1824 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1825 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1826 utsname()->machine);
1827 /*
1828 * Register the top level struct config_item_type with TCM core
1829 */
1830 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1831 if (IS_ERR(fabric)) {
1832 pr_err("target_fabric_configfs_init() failed\n");
1833 return PTR_ERR(fabric);
1834 }
1835 /*
1836 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1837 */
1838 fabric->tf_ops = tcm_qla2xxx_ops;
1839 /*
1840 * Setup default attribute lists for various fabric->tf_cit_tmpl
1841 */
1842 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1843 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1844 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1845 tcm_qla2xxx_tpg_attrib_attrs;
1846 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1847 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1848 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1849 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1850 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1851 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1852 /*
1853 * Register the fabric for use within TCM
1854 */
1855 ret = target_fabric_configfs_register(fabric);
1856 if (ret < 0) {
1857 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1858 return ret;
1859 }
1860 /*
1861 * Setup our local pointer to *fabric
1862 */
1863 tcm_qla2xxx_fabric_configfs = fabric;
1864 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1865
1866 /*
1867 * Register the top level struct config_item_type for NPIV with TCM core
1868 */
1869 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1870 if (IS_ERR(npiv_fabric)) {
1871 pr_err("target_fabric_configfs_init() failed\n");
1872 ret = PTR_ERR(npiv_fabric);
1873 goto out_fabric;
1874 }
1875 /*
1876 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1877 */
1878 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1879 /*
1880 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1881 */
1882 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1883 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1884 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1885 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1886 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1887 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1888 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1889 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1890 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1891 /*
1892 * Register the npiv_fabric for use within TCM
1893 */
1894 ret = target_fabric_configfs_register(npiv_fabric);
1895 if (ret < 0) {
1896 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1897 goto out_fabric;
1898 }
1899 /*
1900 * Setup our local pointer to *npiv_fabric
1901 */
1902 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1903 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1904
1905 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1906 WQ_MEM_RECLAIM, 0);
1907 if (!tcm_qla2xxx_free_wq) {
1908 ret = -ENOMEM;
1909 goto out_fabric_npiv;
1910 }
1911
1912 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1913 if (!tcm_qla2xxx_cmd_wq) {
1914 ret = -ENOMEM;
1915 goto out_free_wq;
1916 }
1917
1918 return 0;
1919
1920 out_free_wq:
1921 destroy_workqueue(tcm_qla2xxx_free_wq);
1922 out_fabric_npiv:
1923 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1924 out_fabric:
1925 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1926 return ret;
1927 }
1928
1929 static void tcm_qla2xxx_deregister_configfs(void)
1930 {
1931 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1932 destroy_workqueue(tcm_qla2xxx_free_wq);
1933
1934 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1935 tcm_qla2xxx_fabric_configfs = NULL;
1936 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1937
1938 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1939 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1940 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1941 }
1942
1943 static int __init tcm_qla2xxx_init(void)
1944 {
1945 int ret;
1946
1947 ret = tcm_qla2xxx_register_configfs();
1948 if (ret < 0)
1949 return ret;
1950
1951 return 0;
1952 }
1953
1954 static void __exit tcm_qla2xxx_exit(void)
1955 {
1956 tcm_qla2xxx_deregister_configfs();
1957 }
1958
1959 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1960 MODULE_LICENSE("GPL");
1961 module_init(tcm_qla2xxx_init);
1962 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support