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hfs: get rid of hfs_sync_super
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob6e64314dbbb3d33e70782e1506039f9480d1b5c3
1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
4 *
5 * ?? Copyright 2010-2011 RisingTide Systems LLC.
6 *
7 * Licensed to the Linux Foundation under the General Public License (GPL)
8 * version 2.
9 *
10 * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
11 *
12 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
13 * the TCM_FC / Open-FCoE.org fabric module.
14 *
15 * Copyright (c) 2010 Cisco Systems, Inc
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 ****************************************************************************/
27
28
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <generated/utsrelease.h>
32 #include <linux/utsname.h>
33 #include <linux/init.h>
34 #include <linux/list.h>
35 #include <linux/slab.h>
36 #include <linux/kthread.h>
37 #include <linux/types.h>
38 #include <linux/string.h>
39 #include <linux/configfs.h>
40 #include <linux/ctype.h>
41 #include <linux/string.h>
42 #include <linux/ctype.h>
43 #include <asm/unaligned.h>
44 #include <scsi/scsi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_device.h>
47 #include <scsi/scsi_cmnd.h>
48 #include <target/target_core_base.h>
49 #include <target/target_core_fabric.h>
50 #include <target/target_core_fabric_configfs.h>
51 #include <target/target_core_configfs.h>
52 #include <target/configfs_macros.h>
53
54 #include "qla_def.h"
55 #include "qla_target.h"
56 #include "tcm_qla2xxx.h"
57
58 struct workqueue_struct *tcm_qla2xxx_free_wq;
59 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
60
61 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
62 {
63 return 1;
64 }
65
66 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
67 {
68 return 0;
69 }
70
71 /*
72 * Parse WWN.
73 * If strict, we require lower-case hex and colon separators to be sure
74 * the name is the same as what would be generated by ft_format_wwn()
75 * so the name and wwn are mapped one-to-one.
76 */
77 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
78 {
79 const char *cp;
80 char c;
81 u32 nibble;
82 u32 byte = 0;
83 u32 pos = 0;
84 u32 err;
85
86 *wwn = 0;
87 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
88 c = *cp;
89 if (c == '\n' && cp[1] == '\0')
90 continue;
91 if (strict && pos++ == 2 && byte++ < 7) {
92 pos = 0;
93 if (c == ':')
94 continue;
95 err = 1;
96 goto fail;
97 }
98 if (c == '\0') {
99 err = 2;
100 if (strict && byte != 8)
101 goto fail;
102 return cp - name;
103 }
104 err = 3;
105 if (isdigit(c))
106 nibble = c - '0';
107 else if (isxdigit(c) && (islower(c) || !strict))
108 nibble = tolower(c) - 'a' + 10;
109 else
110 goto fail;
111 *wwn = (*wwn << 4) | nibble;
112 }
113 err = 4;
114 fail:
115 pr_debug("err %u len %zu pos %u byte %u\n",
116 err, cp - name, pos, byte);
117 return -1;
118 }
119
120 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
121 {
122 u8 b[8];
123
124 put_unaligned_be64(wwn, b);
125 return snprintf(buf, len,
126 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
127 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
128 }
129
130 static char *tcm_qla2xxx_get_fabric_name(void)
131 {
132 return "qla2xxx";
133 }
134
135 /*
136 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
137 */
138 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
139 {
140 unsigned int i, j;
141 u8 wwn[8];
142
143 memset(wwn, 0, sizeof(wwn));
144
145 /* Validate and store the new name */
146 for (i = 0, j = 0; i < 16; i++) {
147 int value;
148
149 value = hex_to_bin(*ns++);
150 if (value >= 0)
151 j = (j << 4) | value;
152 else
153 return -EINVAL;
154
155 if (i % 2) {
156 wwn[i/2] = j & 0xff;
157 j = 0;
158 }
159 }
160
161 *nm = wwn_to_u64(wwn);
162 return 0;
163 }
164
165 /*
166 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
167 * store_fc_host_vport_create()
168 */
169 static int tcm_qla2xxx_npiv_parse_wwn(
170 const char *name,
171 size_t count,
172 u64 *wwpn,
173 u64 *wwnn)
174 {
175 unsigned int cnt = count;
176 int rc;
177
178 *wwpn = 0;
179 *wwnn = 0;
180
181 /* count may include a LF at end of string */
182 if (name[cnt-1] == '\n')
183 cnt--;
184
185 /* validate we have enough characters for WWPN */
186 if ((cnt != (16+1+16)) || (name[16] != ':'))
187 return -EINVAL;
188
189 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
190 if (rc != 0)
191 return rc;
192
193 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
194 if (rc != 0)
195 return rc;
196
197 return 0;
198 }
199
200 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
201 u64 wwpn, u64 wwnn)
202 {
203 u8 b[8], b2[8];
204
205 put_unaligned_be64(wwpn, b);
206 put_unaligned_be64(wwnn, b2);
207 return snprintf(buf, len,
208 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
209 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
210 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
211 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
212 }
213
214 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
215 {
216 return "qla2xxx_npiv";
217 }
218
219 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
220 {
221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
222 struct tcm_qla2xxx_tpg, se_tpg);
223 struct tcm_qla2xxx_lport *lport = tpg->lport;
224 u8 proto_id;
225
226 switch (lport->lport_proto_id) {
227 case SCSI_PROTOCOL_FCP:
228 default:
229 proto_id = fc_get_fabric_proto_ident(se_tpg);
230 break;
231 }
232
233 return proto_id;
234 }
235
236 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
237 {
238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
239 struct tcm_qla2xxx_tpg, se_tpg);
240 struct tcm_qla2xxx_lport *lport = tpg->lport;
241
242 return &lport->lport_name[0];
243 }
244
245 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
246 {
247 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
248 struct tcm_qla2xxx_tpg, se_tpg);
249 struct tcm_qla2xxx_lport *lport = tpg->lport;
250
251 return &lport->lport_npiv_name[0];
252 }
253
254 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
255 {
256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
257 struct tcm_qla2xxx_tpg, se_tpg);
258 return tpg->lport_tpgt;
259 }
260
261 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
262 {
263 return 1;
264 }
265
266 static u32 tcm_qla2xxx_get_pr_transport_id(
267 struct se_portal_group *se_tpg,
268 struct se_node_acl *se_nacl,
269 struct t10_pr_registration *pr_reg,
270 int *format_code,
271 unsigned char *buf)
272 {
273 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
274 struct tcm_qla2xxx_tpg, se_tpg);
275 struct tcm_qla2xxx_lport *lport = tpg->lport;
276 int ret = 0;
277
278 switch (lport->lport_proto_id) {
279 case SCSI_PROTOCOL_FCP:
280 default:
281 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
282 format_code, buf);
283 break;
284 }
285
286 return ret;
287 }
288
289 static u32 tcm_qla2xxx_get_pr_transport_id_len(
290 struct se_portal_group *se_tpg,
291 struct se_node_acl *se_nacl,
292 struct t10_pr_registration *pr_reg,
293 int *format_code)
294 {
295 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
296 struct tcm_qla2xxx_tpg, se_tpg);
297 struct tcm_qla2xxx_lport *lport = tpg->lport;
298 int ret = 0;
299
300 switch (lport->lport_proto_id) {
301 case SCSI_PROTOCOL_FCP:
302 default:
303 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
304 format_code);
305 break;
306 }
307
308 return ret;
309 }
310
311 static char *tcm_qla2xxx_parse_pr_out_transport_id(
312 struct se_portal_group *se_tpg,
313 const char *buf,
314 u32 *out_tid_len,
315 char **port_nexus_ptr)
316 {
317 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
318 struct tcm_qla2xxx_tpg, se_tpg);
319 struct tcm_qla2xxx_lport *lport = tpg->lport;
320 char *tid = NULL;
321
322 switch (lport->lport_proto_id) {
323 case SCSI_PROTOCOL_FCP:
324 default:
325 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
326 port_nexus_ptr);
327 break;
328 }
329
330 return tid;
331 }
332
333 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
334 {
335 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
336 struct tcm_qla2xxx_tpg, se_tpg);
337
338 return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
339 }
340
341 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
342 {
343 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
344 struct tcm_qla2xxx_tpg, se_tpg);
345
346 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
347 }
348
349 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
350 {
351 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
352 struct tcm_qla2xxx_tpg, se_tpg);
353
354 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
355 }
356
357 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
358 {
359 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
360 struct tcm_qla2xxx_tpg, se_tpg);
361
362 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
363 }
364
365 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
366 struct se_portal_group *se_tpg)
367 {
368 struct tcm_qla2xxx_nacl *nacl;
369
370 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
371 if (!nacl) {
372 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
373 return NULL;
374 }
375
376 return &nacl->se_node_acl;
377 }
378
379 static void tcm_qla2xxx_release_fabric_acl(
380 struct se_portal_group *se_tpg,
381 struct se_node_acl *se_nacl)
382 {
383 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
384 struct tcm_qla2xxx_nacl, se_node_acl);
385 kfree(nacl);
386 }
387
388 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
389 {
390 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
391 struct tcm_qla2xxx_tpg, se_tpg);
392
393 return tpg->lport_tpgt;
394 }
395
396 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
397 {
398 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
399 struct qla_tgt_mgmt_cmd, free_work);
400
401 transport_generic_free_cmd(&mcmd->se_cmd, 0);
402 }
403
404 /*
405 * Called from qla_target_template->free_mcmd(), and will call
406 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
407 * release callback. qla_hw_data->hardware_lock is expected to be held
408 */
409 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
410 {
411 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
412 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
413 }
414
415 static void tcm_qla2xxx_complete_free(struct work_struct *work)
416 {
417 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
418
419 transport_generic_free_cmd(&cmd->se_cmd, 0);
420 }
421
422 /*
423 * Called from qla_target_template->free_cmd(), and will call
424 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
425 * release callback. qla_hw_data->hardware_lock is expected to be held
426 */
427 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
428 {
429 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
430 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
431 }
432
433 /*
434 * Called from struct target_core_fabric_ops->check_stop_free() context
435 */
436 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
437 {
438 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
439 }
440
441 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
442 * fabric descriptor @se_cmd command to release
443 */
444 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
445 {
446 struct qla_tgt_cmd *cmd;
447
448 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
449 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
450 struct qla_tgt_mgmt_cmd, se_cmd);
451 qlt_free_mcmd(mcmd);
452 return;
453 }
454
455 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
456 qlt_free_cmd(cmd);
457 }
458
459 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
460 {
461 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
462 struct scsi_qla_host *vha;
463 unsigned long flags;
464
465 BUG_ON(!sess);
466 vha = sess->vha;
467
468 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
469 sess->tearing_down = 1;
470 target_splice_sess_cmd_list(se_sess);
471 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
472
473 return 1;
474 }
475
476 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
477 {
478 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
479 struct scsi_qla_host *vha;
480 unsigned long flags;
481
482 BUG_ON(!sess);
483 vha = sess->vha;
484
485 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
486 qlt_unreg_sess(sess);
487 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
488 }
489
490 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
491 {
492 return 0;
493 }
494
495 /*
496 * The LIO target core uses DMA_TO_DEVICE to mean that data is going
497 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
498 * that data is coming from the target (eg handling a READ). However,
499 * this is just the opposite of what we have to tell the DMA mapping
500 * layer -- eg when handling a READ, the HBA will have to DMA the data
501 * out of memory so it can send it to the initiator, which means we
502 * need to use DMA_TO_DEVICE when we map the data.
503 */
504 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
505 {
506 if (se_cmd->se_cmd_flags & SCF_BIDI)
507 return DMA_BIDIRECTIONAL;
508
509 switch (se_cmd->data_direction) {
510 case DMA_TO_DEVICE:
511 return DMA_FROM_DEVICE;
512 case DMA_FROM_DEVICE:
513 return DMA_TO_DEVICE;
514 case DMA_NONE:
515 default:
516 return DMA_NONE;
517 }
518 }
519
520 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
521 {
522 struct qla_tgt_cmd *cmd = container_of(se_cmd,
523 struct qla_tgt_cmd, se_cmd);
524
525 cmd->bufflen = se_cmd->data_length;
526 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
527
528 cmd->sg_cnt = se_cmd->t_data_nents;
529 cmd->sg = se_cmd->t_data_sg;
530
531 /*
532 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
533 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
534 */
535 return qlt_rdy_to_xfer(cmd);
536 }
537
538 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
539 {
540 unsigned long flags;
541 /*
542 * Check for WRITE_PENDING status to determine if we need to wait for
543 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
544 */
545 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
546 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
547 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
548 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
549 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
550 3000);
551 return 0;
552 }
553 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
554
555 return 0;
556 }
557
558 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
559 {
560 return;
561 }
562
563 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
564 {
565 struct qla_tgt_cmd *cmd = container_of(se_cmd,
566 struct qla_tgt_cmd, se_cmd);
567
568 return cmd->tag;
569 }
570
571 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
572 {
573 return 0;
574 }
575
576 /*
577 * Called from process context in qla_target.c:qlt_do_work() code
578 */
579 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
580 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
581 int data_dir, int bidi)
582 {
583 struct se_cmd *se_cmd = &cmd->se_cmd;
584 struct se_session *se_sess;
585 struct qla_tgt_sess *sess;
586 int flags = TARGET_SCF_ACK_KREF;
587
588 if (bidi)
589 flags |= TARGET_SCF_BIDI_OP;
590
591 sess = cmd->sess;
592 if (!sess) {
593 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
594 return -EINVAL;
595 }
596
597 se_sess = sess->se_sess;
598 if (!se_sess) {
599 pr_err("Unable to locate active struct se_session\n");
600 return -EINVAL;
601 }
602
603 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
604 cmd->unpacked_lun, data_length, fcp_task_attr,
605 data_dir, flags);
606 return 0;
607 }
608
609 static void tcm_qla2xxx_do_rsp(struct work_struct *work)
610 {
611 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
612 /*
613 * Dispatch ->queue_status from workqueue process context
614 */
615 transport_generic_request_failure(&cmd->se_cmd);
616 }
617
618 /*
619 * Called from qla_target.c:qlt_do_ctio_completion()
620 */
621 static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
622 {
623 struct se_cmd *se_cmd = &cmd->se_cmd;
624 unsigned long flags;
625 /*
626 * Ensure that the complete FCP WRITE payload has been received.
627 * Otherwise return an exception via CHECK_CONDITION status.
628 */
629 if (!cmd->write_data_transferred) {
630 /*
631 * Check if se_cmd has already been aborted via LUN_RESET, and
632 * waiting upon completion in tcm_qla2xxx_write_pending_status()
633 */
634 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
635 if (se_cmd->transport_state & CMD_T_ABORTED) {
636 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
637 complete(&se_cmd->t_transport_stop_comp);
638 return 0;
639 }
640 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
641
642 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
643 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
644 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
645 return 0;
646 }
647 /*
648 * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
649 * status to the backstore processing thread.
650 */
651 return transport_generic_handle_data(&cmd->se_cmd);
652 }
653
654 /*
655 * Called from qla_target.c:qlt_issue_task_mgmt()
656 */
657 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
658 uint8_t tmr_func, uint32_t tag)
659 {
660 struct qla_tgt_sess *sess = mcmd->sess;
661 struct se_cmd *se_cmd = &mcmd->se_cmd;
662
663 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
664 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
665 }
666
667 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
668 {
669 struct qla_tgt_cmd *cmd = container_of(se_cmd,
670 struct qla_tgt_cmd, se_cmd);
671
672 cmd->bufflen = se_cmd->data_length;
673 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
674 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
675
676 cmd->sg_cnt = se_cmd->t_data_nents;
677 cmd->sg = se_cmd->t_data_sg;
678 cmd->offset = 0;
679
680 /*
681 * Now queue completed DATA_IN the qla2xxx LLD and response ring
682 */
683 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
684 se_cmd->scsi_status);
685 }
686
687 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
688 {
689 struct qla_tgt_cmd *cmd = container_of(se_cmd,
690 struct qla_tgt_cmd, se_cmd);
691 int xmit_type = QLA_TGT_XMIT_STATUS;
692
693 cmd->bufflen = se_cmd->data_length;
694 cmd->sg = NULL;
695 cmd->sg_cnt = 0;
696 cmd->offset = 0;
697 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
698 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
699
700 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
701 /*
702 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
703 * for qla_tgt_xmit_response LLD code
704 */
705 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
706 se_cmd->residual_count = se_cmd->data_length;
707
708 cmd->bufflen = 0;
709 }
710 /*
711 * Now queue status response to qla2xxx LLD code and response ring
712 */
713 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
714 }
715
716 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
717 {
718 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
719 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
720 struct qla_tgt_mgmt_cmd, se_cmd);
721
722 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
723 mcmd, se_tmr->function, se_tmr->response);
724 /*
725 * Do translation between TCM TM response codes and
726 * QLA2xxx FC TM response codes.
727 */
728 switch (se_tmr->response) {
729 case TMR_FUNCTION_COMPLETE:
730 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
731 break;
732 case TMR_TASK_DOES_NOT_EXIST:
733 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
734 break;
735 case TMR_FUNCTION_REJECTED:
736 mcmd->fc_tm_rsp = FC_TM_REJECT;
737 break;
738 case TMR_LUN_DOES_NOT_EXIST:
739 default:
740 mcmd->fc_tm_rsp = FC_TM_FAILED;
741 break;
742 }
743 /*
744 * Queue the TM response to QLA2xxx LLD to build a
745 * CTIO response packet.
746 */
747 qlt_xmit_tm_rsp(mcmd);
748
749 return 0;
750 }
751
752 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
753 {
754 return 0;
755 }
756
757 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
758 u32 sense_length)
759 {
760 return 0;
761 }
762
763 /* Local pointer to allocated TCM configfs fabric module */
764 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
765 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
766
767 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
768 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
769 /*
770 * Expected to be called with struct qla_hw_data->hardware_lock held
771 */
772 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
773 {
774 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
775 struct se_portal_group *se_tpg = se_nacl->se_tpg;
776 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
777 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
778 struct tcm_qla2xxx_lport, lport_wwn);
779 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
780 struct tcm_qla2xxx_nacl, se_node_acl);
781 void *node;
782
783 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
784
785 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
786 WARN_ON(node && (node != se_nacl));
787
788 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
789 se_nacl, nacl->nport_wwnn, nacl->nport_id);
790 /*
791 * Now clear the se_nacl and session pointers from our HW lport lookup
792 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
793 *
794 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
795 * target_wait_for_sess_cmds() before the session waits for outstanding
796 * I/O to complete, to avoid a race between session shutdown execution
797 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
798 */
799 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
800 }
801
802 static void tcm_qla2xxx_release_session(struct kref *kref)
803 {
804 struct se_session *se_sess = container_of(kref,
805 struct se_session, sess_kref);
806
807 qlt_unreg_sess(se_sess->fabric_sess_ptr);
808 }
809
810 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
811 {
812 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
813 struct qla_hw_data *ha = sess->vha->hw;
814 unsigned long flags;
815
816 spin_lock_irqsave(&ha->hardware_lock, flags);
817 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
818 spin_unlock_irqrestore(&ha->hardware_lock, flags);
819 }
820
821 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
822 {
823 tcm_qla2xxx_put_session(sess->se_sess);
824 }
825
826 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
827 {
828 tcm_qla2xxx_shutdown_session(sess->se_sess);
829 }
830
831 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
832 struct se_portal_group *se_tpg,
833 struct config_group *group,
834 const char *name)
835 {
836 struct se_node_acl *se_nacl, *se_nacl_new;
837 struct tcm_qla2xxx_nacl *nacl;
838 u64 wwnn;
839 u32 qla2xxx_nexus_depth;
840
841 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
842 return ERR_PTR(-EINVAL);
843
844 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
845 if (!se_nacl_new)
846 return ERR_PTR(-ENOMEM);
847 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
848 qla2xxx_nexus_depth = 1;
849
850 /*
851 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
852 * when converting a NodeACL from demo mode -> explict
853 */
854 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
855 name, qla2xxx_nexus_depth);
856 if (IS_ERR(se_nacl)) {
857 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
858 return se_nacl;
859 }
860 /*
861 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
862 */
863 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
864 nacl->nport_wwnn = wwnn;
865 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
866
867 return se_nacl;
868 }
869
870 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
871 {
872 struct se_portal_group *se_tpg = se_acl->se_tpg;
873 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
874 struct tcm_qla2xxx_nacl, se_node_acl);
875
876 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
877 kfree(nacl);
878 }
879
880 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
881
882 #define DEF_QLA_TPG_ATTRIB(name) \
883 \
884 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
885 struct se_portal_group *se_tpg, \
886 char *page) \
887 { \
888 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
889 struct tcm_qla2xxx_tpg, se_tpg); \
890 \
891 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
892 } \
893 \
894 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
895 struct se_portal_group *se_tpg, \
896 const char *page, \
897 size_t count) \
898 { \
899 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
900 struct tcm_qla2xxx_tpg, se_tpg); \
901 unsigned long val; \
902 int ret; \
903 \
904 ret = kstrtoul(page, 0, &val); \
905 if (ret < 0) { \
906 pr_err("kstrtoul() failed with" \
907 " ret: %d\n", ret); \
908 return -EINVAL; \
909 } \
910 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
911 \
912 return (!ret) ? count : -EINVAL; \
913 }
914
915 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
916 \
917 static int tcm_qla2xxx_set_attrib_##_name( \
918 struct tcm_qla2xxx_tpg *tpg, \
919 unsigned long val) \
920 { \
921 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
922 \
923 if ((val != 0) && (val != 1)) { \
924 pr_err("Illegal boolean value %lu\n", val); \
925 return -EINVAL; \
926 } \
927 \
928 a->_name = val; \
929 return 0; \
930 }
931
932 #define QLA_TPG_ATTR(_name, _mode) \
933 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
934
935 /*
936 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
937 */
938 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
939 DEF_QLA_TPG_ATTRIB(generate_node_acls);
940 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
941
942 /*
943 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
944 */
945 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
946 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
947 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
948
949 /*
950 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
951 */
952 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
953 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
954 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
955
956 /*
957 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
958 */
959 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
960 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
961 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
962
963 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
964 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
965 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
966 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
967 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
968 NULL,
969 };
970
971 /* End items for tcm_qla2xxx_tpg_attrib_cit */
972
973 static ssize_t tcm_qla2xxx_tpg_show_enable(
974 struct se_portal_group *se_tpg,
975 char *page)
976 {
977 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
978 struct tcm_qla2xxx_tpg, se_tpg);
979
980 return snprintf(page, PAGE_SIZE, "%d\n",
981 atomic_read(&tpg->lport_tpg_enabled));
982 }
983
984 static ssize_t tcm_qla2xxx_tpg_store_enable(
985 struct se_portal_group *se_tpg,
986 const char *page,
987 size_t count)
988 {
989 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
990 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
991 struct tcm_qla2xxx_lport, lport_wwn);
992 struct scsi_qla_host *vha = lport->qla_vha;
993 struct qla_hw_data *ha = vha->hw;
994 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
995 struct tcm_qla2xxx_tpg, se_tpg);
996 unsigned long op;
997 int rc;
998
999 rc = kstrtoul(page, 0, &op);
1000 if (rc < 0) {
1001 pr_err("kstrtoul() returned %d\n", rc);
1002 return -EINVAL;
1003 }
1004 if ((op != 1) && (op != 0)) {
1005 pr_err("Illegal value for tpg_enable: %lu\n", op);
1006 return -EINVAL;
1007 }
1008
1009 if (op) {
1010 atomic_set(&tpg->lport_tpg_enabled, 1);
1011 qlt_enable_vha(vha);
1012 } else {
1013 if (!ha->tgt.qla_tgt) {
1014 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1015 return -ENODEV;
1016 }
1017 atomic_set(&tpg->lport_tpg_enabled, 0);
1018 qlt_stop_phase1(ha->tgt.qla_tgt);
1019 }
1020
1021 return count;
1022 }
1023
1024 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1025
1026 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1027 &tcm_qla2xxx_tpg_enable.attr,
1028 NULL,
1029 };
1030
1031 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1032 struct se_wwn *wwn,
1033 struct config_group *group,
1034 const char *name)
1035 {
1036 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1037 struct tcm_qla2xxx_lport, lport_wwn);
1038 struct tcm_qla2xxx_tpg *tpg;
1039 unsigned long tpgt;
1040 int ret;
1041
1042 if (strstr(name, "tpgt_") != name)
1043 return ERR_PTR(-EINVAL);
1044 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1045 return ERR_PTR(-EINVAL);
1046
1047 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1048 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1049 return ERR_PTR(-ENOSYS);
1050 }
1051
1052 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1053 if (!tpg) {
1054 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1055 return ERR_PTR(-ENOMEM);
1056 }
1057 tpg->lport = lport;
1058 tpg->lport_tpgt = tpgt;
1059 /*
1060 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1061 * NodeACLs
1062 */
1063 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1064 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1065 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1066
1067 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1068 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1069 if (ret < 0) {
1070 kfree(tpg);
1071 return NULL;
1072 }
1073 /*
1074 * Setup local TPG=1 pointer for non NPIV mode.
1075 */
1076 if (lport->qla_npiv_vp == NULL)
1077 lport->tpg_1 = tpg;
1078
1079 return &tpg->se_tpg;
1080 }
1081
1082 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1083 {
1084 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1085 struct tcm_qla2xxx_tpg, se_tpg);
1086 struct tcm_qla2xxx_lport *lport = tpg->lport;
1087 struct scsi_qla_host *vha = lport->qla_vha;
1088 struct qla_hw_data *ha = vha->hw;
1089 /*
1090 * Call into qla2x_target.c LLD logic to shutdown the active
1091 * FC Nexuses and disable target mode operation for this qla_hw_data
1092 */
1093 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1094 qlt_stop_phase1(ha->tgt.qla_tgt);
1095
1096 core_tpg_deregister(se_tpg);
1097 /*
1098 * Clear local TPG=1 pointer for non NPIV mode.
1099 */
1100 if (lport->qla_npiv_vp == NULL)
1101 lport->tpg_1 = NULL;
1102
1103 kfree(tpg);
1104 }
1105
1106 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1107 struct se_wwn *wwn,
1108 struct config_group *group,
1109 const char *name)
1110 {
1111 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1112 struct tcm_qla2xxx_lport, lport_wwn);
1113 struct tcm_qla2xxx_tpg *tpg;
1114 unsigned long tpgt;
1115 int ret;
1116
1117 if (strstr(name, "tpgt_") != name)
1118 return ERR_PTR(-EINVAL);
1119 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1120 return ERR_PTR(-EINVAL);
1121
1122 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1123 if (!tpg) {
1124 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1125 return ERR_PTR(-ENOMEM);
1126 }
1127 tpg->lport = lport;
1128 tpg->lport_tpgt = tpgt;
1129
1130 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1131 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1132 if (ret < 0) {
1133 kfree(tpg);
1134 return NULL;
1135 }
1136 return &tpg->se_tpg;
1137 }
1138
1139 /*
1140 * Expected to be called with struct qla_hw_data->hardware_lock held
1141 */
1142 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1143 scsi_qla_host_t *vha,
1144 const uint8_t *s_id)
1145 {
1146 struct qla_hw_data *ha = vha->hw;
1147 struct tcm_qla2xxx_lport *lport;
1148 struct se_node_acl *se_nacl;
1149 struct tcm_qla2xxx_nacl *nacl;
1150 u32 key;
1151
1152 lport = ha->tgt.target_lport_ptr;
1153 if (!lport) {
1154 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1155 dump_stack();
1156 return NULL;
1157 }
1158
1159 key = (((unsigned long)s_id[0] << 16) |
1160 ((unsigned long)s_id[1] << 8) |
1161 (unsigned long)s_id[2]);
1162 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1163
1164 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1165 if (!se_nacl) {
1166 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1167 return NULL;
1168 }
1169 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1170 se_nacl, se_nacl->initiatorname);
1171
1172 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1173 if (!nacl->qla_tgt_sess) {
1174 pr_err("Unable to locate struct qla_tgt_sess\n");
1175 return NULL;
1176 }
1177
1178 return nacl->qla_tgt_sess;
1179 }
1180
1181 /*
1182 * Expected to be called with struct qla_hw_data->hardware_lock held
1183 */
1184 static void tcm_qla2xxx_set_sess_by_s_id(
1185 struct tcm_qla2xxx_lport *lport,
1186 struct se_node_acl *new_se_nacl,
1187 struct tcm_qla2xxx_nacl *nacl,
1188 struct se_session *se_sess,
1189 struct qla_tgt_sess *qla_tgt_sess,
1190 uint8_t *s_id)
1191 {
1192 u32 key;
1193 void *slot;
1194 int rc;
1195
1196 key = (((unsigned long)s_id[0] << 16) |
1197 ((unsigned long)s_id[1] << 8) |
1198 (unsigned long)s_id[2]);
1199 pr_debug("set_sess_by_s_id: %06x\n", key);
1200
1201 slot = btree_lookup32(&lport->lport_fcport_map, key);
1202 if (!slot) {
1203 if (new_se_nacl) {
1204 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1205 nacl->nport_id = key;
1206 rc = btree_insert32(&lport->lport_fcport_map, key,
1207 new_se_nacl, GFP_ATOMIC);
1208 if (rc)
1209 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1210 (int)key);
1211 } else {
1212 pr_debug("Wiping nonexisting fc_port entry\n");
1213 }
1214
1215 qla_tgt_sess->se_sess = se_sess;
1216 nacl->qla_tgt_sess = qla_tgt_sess;
1217 return;
1218 }
1219
1220 if (nacl->qla_tgt_sess) {
1221 if (new_se_nacl == NULL) {
1222 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1223 btree_remove32(&lport->lport_fcport_map, key);
1224 nacl->qla_tgt_sess = NULL;
1225 return;
1226 }
1227 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1228 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1229 qla_tgt_sess->se_sess = se_sess;
1230 nacl->qla_tgt_sess = qla_tgt_sess;
1231 return;
1232 }
1233
1234 if (new_se_nacl == NULL) {
1235 pr_debug("Clearing existing fc_port entry\n");
1236 btree_remove32(&lport->lport_fcport_map, key);
1237 return;
1238 }
1239
1240 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1241 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1242 qla_tgt_sess->se_sess = se_sess;
1243 nacl->qla_tgt_sess = qla_tgt_sess;
1244
1245 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1246 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1247 }
1248
1249 /*
1250 * Expected to be called with struct qla_hw_data->hardware_lock held
1251 */
1252 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1253 scsi_qla_host_t *vha,
1254 const uint16_t loop_id)
1255 {
1256 struct qla_hw_data *ha = vha->hw;
1257 struct tcm_qla2xxx_lport *lport;
1258 struct se_node_acl *se_nacl;
1259 struct tcm_qla2xxx_nacl *nacl;
1260 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1261
1262 lport = ha->tgt.target_lport_ptr;
1263 if (!lport) {
1264 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1265 dump_stack();
1266 return NULL;
1267 }
1268
1269 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1270
1271 fc_loopid = lport->lport_loopid_map + loop_id;
1272 se_nacl = fc_loopid->se_nacl;
1273 if (!se_nacl) {
1274 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1275 loop_id);
1276 return NULL;
1277 }
1278
1279 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1280
1281 if (!nacl->qla_tgt_sess) {
1282 pr_err("Unable to locate struct qla_tgt_sess\n");
1283 return NULL;
1284 }
1285
1286 return nacl->qla_tgt_sess;
1287 }
1288
1289 /*
1290 * Expected to be called with struct qla_hw_data->hardware_lock held
1291 */
1292 static void tcm_qla2xxx_set_sess_by_loop_id(
1293 struct tcm_qla2xxx_lport *lport,
1294 struct se_node_acl *new_se_nacl,
1295 struct tcm_qla2xxx_nacl *nacl,
1296 struct se_session *se_sess,
1297 struct qla_tgt_sess *qla_tgt_sess,
1298 uint16_t loop_id)
1299 {
1300 struct se_node_acl *saved_nacl;
1301 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1302
1303 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1304
1305 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1306 lport->lport_loopid_map)[loop_id];
1307
1308 saved_nacl = fc_loopid->se_nacl;
1309 if (!saved_nacl) {
1310 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1311 fc_loopid->se_nacl = new_se_nacl;
1312 if (qla_tgt_sess->se_sess != se_sess)
1313 qla_tgt_sess->se_sess = se_sess;
1314 if (nacl->qla_tgt_sess != qla_tgt_sess)
1315 nacl->qla_tgt_sess = qla_tgt_sess;
1316 return;
1317 }
1318
1319 if (nacl->qla_tgt_sess) {
1320 if (new_se_nacl == NULL) {
1321 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1322 fc_loopid->se_nacl = NULL;
1323 nacl->qla_tgt_sess = NULL;
1324 return;
1325 }
1326
1327 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1328 fc_loopid->se_nacl = new_se_nacl;
1329 if (qla_tgt_sess->se_sess != se_sess)
1330 qla_tgt_sess->se_sess = se_sess;
1331 if (nacl->qla_tgt_sess != qla_tgt_sess)
1332 nacl->qla_tgt_sess = qla_tgt_sess;
1333 return;
1334 }
1335
1336 if (new_se_nacl == NULL) {
1337 pr_debug("Clearing fc_loopid->se_nacl\n");
1338 fc_loopid->se_nacl = NULL;
1339 return;
1340 }
1341
1342 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1343 fc_loopid->se_nacl = new_se_nacl;
1344 if (qla_tgt_sess->se_sess != se_sess)
1345 qla_tgt_sess->se_sess = se_sess;
1346 if (nacl->qla_tgt_sess != qla_tgt_sess)
1347 nacl->qla_tgt_sess = qla_tgt_sess;
1348
1349 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1350 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1351 }
1352
1353 /*
1354 * Should always be called with qla_hw_data->hardware_lock held.
1355 */
1356 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1357 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1358 {
1359 struct se_session *se_sess = sess->se_sess;
1360 unsigned char be_sid[3];
1361
1362 be_sid[0] = sess->s_id.b.domain;
1363 be_sid[1] = sess->s_id.b.area;
1364 be_sid[2] = sess->s_id.b.al_pa;
1365
1366 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1367 sess, be_sid);
1368 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1369 sess, sess->loop_id);
1370 }
1371
1372 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1373 {
1374 struct qla_tgt *tgt = sess->tgt;
1375 struct qla_hw_data *ha = tgt->ha;
1376 struct se_session *se_sess;
1377 struct se_node_acl *se_nacl;
1378 struct tcm_qla2xxx_lport *lport;
1379 struct tcm_qla2xxx_nacl *nacl;
1380
1381 BUG_ON(in_interrupt());
1382
1383 se_sess = sess->se_sess;
1384 if (!se_sess) {
1385 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1386 dump_stack();
1387 return;
1388 }
1389 se_nacl = se_sess->se_node_acl;
1390 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1391
1392 lport = ha->tgt.target_lport_ptr;
1393 if (!lport) {
1394 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1395 dump_stack();
1396 return;
1397 }
1398 target_wait_for_sess_cmds(se_sess, 0);
1399
1400 transport_deregister_session_configfs(sess->se_sess);
1401 transport_deregister_session(sess->se_sess);
1402 }
1403
1404 /*
1405 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1406 * to locate struct se_node_acl
1407 */
1408 static int tcm_qla2xxx_check_initiator_node_acl(
1409 scsi_qla_host_t *vha,
1410 unsigned char *fc_wwpn,
1411 void *qla_tgt_sess,
1412 uint8_t *s_id,
1413 uint16_t loop_id)
1414 {
1415 struct qla_hw_data *ha = vha->hw;
1416 struct tcm_qla2xxx_lport *lport;
1417 struct tcm_qla2xxx_tpg *tpg;
1418 struct tcm_qla2xxx_nacl *nacl;
1419 struct se_portal_group *se_tpg;
1420 struct se_node_acl *se_nacl;
1421 struct se_session *se_sess;
1422 struct qla_tgt_sess *sess = qla_tgt_sess;
1423 unsigned char port_name[36];
1424 unsigned long flags;
1425
1426 lport = ha->tgt.target_lport_ptr;
1427 if (!lport) {
1428 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1429 dump_stack();
1430 return -EINVAL;
1431 }
1432 /*
1433 * Locate the TPG=1 reference..
1434 */
1435 tpg = lport->tpg_1;
1436 if (!tpg) {
1437 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1438 return -EINVAL;
1439 }
1440 se_tpg = &tpg->se_tpg;
1441
1442 se_sess = transport_init_session();
1443 if (IS_ERR(se_sess)) {
1444 pr_err("Unable to initialize struct se_session\n");
1445 return PTR_ERR(se_sess);
1446 }
1447 /*
1448 * Format the FCP Initiator port_name into colon seperated values to
1449 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1450 */
1451 memset(&port_name, 0, 36);
1452 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1453 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1454 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1455 /*
1456 * Locate our struct se_node_acl either from an explict NodeACL created
1457 * via ConfigFS, or via running in TPG demo mode.
1458 */
1459 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1460 port_name);
1461 if (!se_sess->se_node_acl) {
1462 transport_free_session(se_sess);
1463 return -EINVAL;
1464 }
1465 se_nacl = se_sess->se_node_acl;
1466 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1467 /*
1468 * And now setup the new se_nacl and session pointers into our HW lport
1469 * mappings for fabric S_ID and LOOP_ID.
1470 */
1471 spin_lock_irqsave(&ha->hardware_lock, flags);
1472 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1473 qla_tgt_sess, s_id);
1474 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1475 qla_tgt_sess, loop_id);
1476 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1477 /*
1478 * Finally register the new FC Nexus with TCM
1479 */
1480 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1481
1482 return 0;
1483 }
1484
1485 /*
1486 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1487 */
1488 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1489 .handle_cmd = tcm_qla2xxx_handle_cmd,
1490 .handle_data = tcm_qla2xxx_handle_data,
1491 .handle_tmr = tcm_qla2xxx_handle_tmr,
1492 .free_cmd = tcm_qla2xxx_free_cmd,
1493 .free_mcmd = tcm_qla2xxx_free_mcmd,
1494 .free_session = tcm_qla2xxx_free_session,
1495 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1496 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1497 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1498 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1499 .put_sess = tcm_qla2xxx_put_sess,
1500 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1501 };
1502
1503 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1504 {
1505 int rc;
1506
1507 rc = btree_init32(&lport->lport_fcport_map);
1508 if (rc) {
1509 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1510 return rc;
1511 }
1512
1513 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1514 65536);
1515 if (!lport->lport_loopid_map) {
1516 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1517 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1518 btree_destroy32(&lport->lport_fcport_map);
1519 return -ENOMEM;
1520 }
1521 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1522 * 65536);
1523 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1524 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1525 return 0;
1526 }
1527
1528 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1529 {
1530 struct qla_hw_data *ha = vha->hw;
1531 struct tcm_qla2xxx_lport *lport;
1532 /*
1533 * Setup local pointer to vha, NPIV VP pointer (if present) and
1534 * vha->tcm_lport pointer
1535 */
1536 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1537 lport->qla_vha = vha;
1538
1539 return 0;
1540 }
1541
1542 static struct se_wwn *tcm_qla2xxx_make_lport(
1543 struct target_fabric_configfs *tf,
1544 struct config_group *group,
1545 const char *name)
1546 {
1547 struct tcm_qla2xxx_lport *lport;
1548 u64 wwpn;
1549 int ret = -ENODEV;
1550
1551 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1552 return ERR_PTR(-EINVAL);
1553
1554 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1555 if (!lport) {
1556 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1557 return ERR_PTR(-ENOMEM);
1558 }
1559 lport->lport_wwpn = wwpn;
1560 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1561 wwpn);
1562
1563 ret = tcm_qla2xxx_init_lport(lport);
1564 if (ret != 0)
1565 goto out;
1566
1567 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1568 tcm_qla2xxx_lport_register_cb, lport);
1569 if (ret != 0)
1570 goto out_lport;
1571
1572 return &lport->lport_wwn;
1573 out_lport:
1574 vfree(lport->lport_loopid_map);
1575 btree_destroy32(&lport->lport_fcport_map);
1576 out:
1577 kfree(lport);
1578 return ERR_PTR(ret);
1579 }
1580
1581 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1582 {
1583 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1584 struct tcm_qla2xxx_lport, lport_wwn);
1585 struct scsi_qla_host *vha = lport->qla_vha;
1586 struct qla_hw_data *ha = vha->hw;
1587 struct se_node_acl *node;
1588 u32 key = 0;
1589
1590 /*
1591 * Call into qla2x_target.c LLD logic to complete the
1592 * shutdown of struct qla_tgt after the call to
1593 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1594 */
1595 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1596 qlt_stop_phase2(ha->tgt.qla_tgt);
1597
1598 qlt_lport_deregister(vha);
1599
1600 vfree(lport->lport_loopid_map);
1601 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1602 btree_remove32(&lport->lport_fcport_map, key);
1603 btree_destroy32(&lport->lport_fcport_map);
1604 kfree(lport);
1605 }
1606
1607 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1608 struct target_fabric_configfs *tf,
1609 struct config_group *group,
1610 const char *name)
1611 {
1612 struct tcm_qla2xxx_lport *lport;
1613 u64 npiv_wwpn, npiv_wwnn;
1614 int ret;
1615
1616 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1617 &npiv_wwpn, &npiv_wwnn) < 0)
1618 return ERR_PTR(-EINVAL);
1619
1620 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1621 if (!lport) {
1622 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1623 return ERR_PTR(-ENOMEM);
1624 }
1625 lport->lport_npiv_wwpn = npiv_wwpn;
1626 lport->lport_npiv_wwnn = npiv_wwnn;
1627 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1628 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1629
1630 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1631 ret = -ENOSYS;
1632 if (ret != 0)
1633 goto out;
1634
1635 return &lport->lport_wwn;
1636 out:
1637 kfree(lport);
1638 return ERR_PTR(ret);
1639 }
1640
1641 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1642 {
1643 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1644 struct tcm_qla2xxx_lport, lport_wwn);
1645 struct scsi_qla_host *vha = lport->qla_vha;
1646 struct Scsi_Host *sh = vha->host;
1647 /*
1648 * Notify libfc that we want to release the lport->npiv_vport
1649 */
1650 fc_vport_terminate(lport->npiv_vport);
1651
1652 scsi_host_put(sh);
1653 kfree(lport);
1654 }
1655
1656
1657 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1658 struct target_fabric_configfs *tf,
1659 char *page)
1660 {
1661 return sprintf(page,
1662 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1663 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1664 utsname()->machine);
1665 }
1666
1667 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1668
1669 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1670 &tcm_qla2xxx_wwn_version.attr,
1671 NULL,
1672 };
1673
1674 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1675 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1676 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1677 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1678 .tpg_get_tag = tcm_qla2xxx_get_tag,
1679 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1680 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1681 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1682 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1683 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1684 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1685 .tpg_check_demo_mode_write_protect =
1686 tcm_qla2xxx_check_demo_write_protect,
1687 .tpg_check_prod_mode_write_protect =
1688 tcm_qla2xxx_check_prod_write_protect,
1689 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1690 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1691 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1692 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1693 .new_cmd_map = NULL,
1694 .check_stop_free = tcm_qla2xxx_check_stop_free,
1695 .release_cmd = tcm_qla2xxx_release_cmd,
1696 .put_session = tcm_qla2xxx_put_session,
1697 .shutdown_session = tcm_qla2xxx_shutdown_session,
1698 .close_session = tcm_qla2xxx_close_session,
1699 .sess_get_index = tcm_qla2xxx_sess_get_index,
1700 .sess_get_initiator_sid = NULL,
1701 .write_pending = tcm_qla2xxx_write_pending,
1702 .write_pending_status = tcm_qla2xxx_write_pending_status,
1703 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1704 .get_task_tag = tcm_qla2xxx_get_task_tag,
1705 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1706 .queue_data_in = tcm_qla2xxx_queue_data_in,
1707 .queue_status = tcm_qla2xxx_queue_status,
1708 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1709 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1710 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1711 /*
1712 * Setup function pointers for generic logic in
1713 * target_core_fabric_configfs.c
1714 */
1715 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1716 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1717 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1718 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1719 .fabric_post_link = NULL,
1720 .fabric_pre_unlink = NULL,
1721 .fabric_make_np = NULL,
1722 .fabric_drop_np = NULL,
1723 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1724 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1725 };
1726
1727 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1728 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1729 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1730 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1731 .tpg_get_tag = tcm_qla2xxx_get_tag,
1732 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1733 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1734 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1735 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1736 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1737 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1738 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1739 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1740 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1741 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1742 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1743 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1744 .release_cmd = tcm_qla2xxx_release_cmd,
1745 .put_session = tcm_qla2xxx_put_session,
1746 .shutdown_session = tcm_qla2xxx_shutdown_session,
1747 .close_session = tcm_qla2xxx_close_session,
1748 .sess_get_index = tcm_qla2xxx_sess_get_index,
1749 .sess_get_initiator_sid = NULL,
1750 .write_pending = tcm_qla2xxx_write_pending,
1751 .write_pending_status = tcm_qla2xxx_write_pending_status,
1752 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1753 .get_task_tag = tcm_qla2xxx_get_task_tag,
1754 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1755 .queue_data_in = tcm_qla2xxx_queue_data_in,
1756 .queue_status = tcm_qla2xxx_queue_status,
1757 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1758 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1759 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1760 /*
1761 * Setup function pointers for generic logic in
1762 * target_core_fabric_configfs.c
1763 */
1764 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1765 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1766 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1767 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1768 .fabric_post_link = NULL,
1769 .fabric_pre_unlink = NULL,
1770 .fabric_make_np = NULL,
1771 .fabric_drop_np = NULL,
1772 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1773 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1774 };
1775
1776 static int tcm_qla2xxx_register_configfs(void)
1777 {
1778 struct target_fabric_configfs *fabric, *npiv_fabric;
1779 int ret;
1780
1781 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1782 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1783 utsname()->machine);
1784 /*
1785 * Register the top level struct config_item_type with TCM core
1786 */
1787 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1788 if (IS_ERR(fabric)) {
1789 pr_err("target_fabric_configfs_init() failed\n");
1790 return PTR_ERR(fabric);
1791 }
1792 /*
1793 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1794 */
1795 fabric->tf_ops = tcm_qla2xxx_ops;
1796 /*
1797 * Setup default attribute lists for various fabric->tf_cit_tmpl
1798 */
1799 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1800 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1801 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1802 tcm_qla2xxx_tpg_attrib_attrs;
1803 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1804 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1805 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1806 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1807 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1808 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1809 /*
1810 * Register the fabric for use within TCM
1811 */
1812 ret = target_fabric_configfs_register(fabric);
1813 if (ret < 0) {
1814 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1815 return ret;
1816 }
1817 /*
1818 * Setup our local pointer to *fabric
1819 */
1820 tcm_qla2xxx_fabric_configfs = fabric;
1821 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1822
1823 /*
1824 * Register the top level struct config_item_type for NPIV with TCM core
1825 */
1826 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1827 if (IS_ERR(npiv_fabric)) {
1828 pr_err("target_fabric_configfs_init() failed\n");
1829 ret = PTR_ERR(npiv_fabric);
1830 goto out_fabric;
1831 }
1832 /*
1833 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1834 */
1835 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1836 /*
1837 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1838 */
1839 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1840 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1841 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1842 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1843 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1844 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1845 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1846 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1847 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1848 /*
1849 * Register the npiv_fabric for use within TCM
1850 */
1851 ret = target_fabric_configfs_register(npiv_fabric);
1852 if (ret < 0) {
1853 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1854 goto out_fabric;
1855 }
1856 /*
1857 * Setup our local pointer to *npiv_fabric
1858 */
1859 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1860 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1861
1862 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1863 WQ_MEM_RECLAIM, 0);
1864 if (!tcm_qla2xxx_free_wq) {
1865 ret = -ENOMEM;
1866 goto out_fabric_npiv;
1867 }
1868
1869 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1870 if (!tcm_qla2xxx_cmd_wq) {
1871 ret = -ENOMEM;
1872 goto out_free_wq;
1873 }
1874
1875 return 0;
1876
1877 out_free_wq:
1878 destroy_workqueue(tcm_qla2xxx_free_wq);
1879 out_fabric_npiv:
1880 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1881 out_fabric:
1882 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1883 return ret;
1884 }
1885
1886 static void tcm_qla2xxx_deregister_configfs(void)
1887 {
1888 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1889 destroy_workqueue(tcm_qla2xxx_free_wq);
1890
1891 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1892 tcm_qla2xxx_fabric_configfs = NULL;
1893 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1894
1895 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1896 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1897 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1898 }
1899
1900 static int __init tcm_qla2xxx_init(void)
1901 {
1902 int ret;
1903
1904 ret = tcm_qla2xxx_register_configfs();
1905 if (ret < 0)
1906 return ret;
1907
1908 return 0;
1909 }
1910
1911 static void __exit tcm_qla2xxx_exit(void)
1912 {
1913 tcm_qla2xxx_deregister_configfs();
1914 }
1915
1916 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1917 MODULE_LICENSE("GPL");
1918 module_init(tcm_qla2xxx_init);
1919 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support