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target: Release COMPARE_AND_WRITE mutex in generic failure path
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
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75f8c1f6
NB		 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>
75f8c1f6
NB		 41#include <asm/unaligned.h>
42#include <scsi/scsi.h>
43#include <scsi/scsi_host.h>
44#include <scsi/scsi_device.h>
45#include <scsi/scsi_cmnd.h>
46#include <target/target_core_base.h>
47#include <target/target_core_fabric.h>
48#include <target/target_core_fabric_configfs.h>
49#include <target/target_core_configfs.h>
50#include <target/configfs_macros.h>
51
52#include "qla_def.h"
53#include "qla_target.h"
54#include "tcm_qla2xxx.h"
55
56struct workqueue_struct *tcm_qla2xxx_free_wq;
57struct workqueue_struct *tcm_qla2xxx_cmd_wq;
58
59static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
60{
61 return 1;
62}
63
64static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
65{
66 return 0;
67}
68
69/*
70 * Parse WWN.
71 * If strict, we require lower-case hex and colon separators to be sure
72 * the name is the same as what would be generated by ft_format_wwn()
73 * so the name and wwn are mapped one-to-one.
74 */
75static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
76{
77 const char *cp;
78 char c;
79 u32 nibble;
80 u32 byte = 0;
81 u32 pos = 0;
82 u32 err;
83
84 *wwn = 0;
85 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
86 c = *cp;
87 if (c == '\n' && cp[1] == '\0')
88 continue;
89 if (strict && pos++ == 2 && byte++ < 7) {
90 pos = 0;
91 if (c == ':')
92 continue;
93 err = 1;
94 goto fail;
95 }
96 if (c == '\0') {
97 err = 2;
98 if (strict && byte != 8)
99 goto fail;
100 return cp - name;
101 }
102 err = 3;
103 if (isdigit(c))
104 nibble = c - '0';
105 else if (isxdigit(c) && (islower(c) || !strict))
106 nibble = tolower(c) - 'a' + 10;
107 else
108 goto fail;
109 *wwn = (*wwn << 4) | nibble;
110 }
111 err = 4;
112fail:
113 pr_debug("err %u len %zu pos %u byte %u\n",
114 err, cp - name, pos, byte);
115 return -1;
116}
117
118static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
119{
120 u8 b[8];
121
122 put_unaligned_be64(wwn, b);
123 return snprintf(buf, len,
124 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
125 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
126}
127
128static char *tcm_qla2xxx_get_fabric_name(void)
129{
130 return "qla2xxx";
131}
132
133/*
134 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
135 */
136static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
137{
d4f75b56 138 unsigned int i, j;
75f8c1f6
NB		 139 u8 wwn[8];
140
141 memset(wwn, 0, sizeof(wwn));
142
143 /* Validate and store the new name */
144 for (i = 0, j = 0; i < 16; i++) {
d4f75b56
RD		 145 int value;
146
75f8c1f6
NB		 147 value = hex_to_bin(*ns++);
148 if (value >= 0)
149 j = (j << 4) | value;
150 else
151 return -EINVAL;
152
153 if (i % 2) {
154 wwn[i/2] = j & 0xff;
155 j = 0;
156 }
157 }
158
159 *nm = wwn_to_u64(wwn);
160 return 0;
161}
162
163/*
164 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
165 * store_fc_host_vport_create()
166 */
167static int tcm_qla2xxx_npiv_parse_wwn(
168 const char *name,
169 size_t count,
170 u64 *wwpn,
171 u64 *wwnn)
172{
173 unsigned int cnt = count;
174 int rc;
175
176 *wwpn = 0;
177 *wwnn = 0;
178
179 /* count may include a LF at end of string */
180 if (name[cnt-1] == '\n')
181 cnt--;
182
183 /* validate we have enough characters for WWPN */
184 if ((cnt != (16+1+16)) || (name[16] != ':'))
185 return -EINVAL;
186
187 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
188 if (rc != 0)
189 return rc;
190
191 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
192 if (rc != 0)
193 return rc;
194
195 return 0;
196}
197
198static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
199 u64 wwpn, u64 wwnn)
200{
201 u8 b[8], b2[8];
202
203 put_unaligned_be64(wwpn, b);
204 put_unaligned_be64(wwnn, b2);
205 return snprintf(buf, len,
206 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
207 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
208 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
209 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
210}
211
212static char *tcm_qla2xxx_npiv_get_fabric_name(void)
213{
214 return "qla2xxx_npiv";
215}
216
217static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
218{
219 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
220 struct tcm_qla2xxx_tpg, se_tpg);
221 struct tcm_qla2xxx_lport *lport = tpg->lport;
222 u8 proto_id;
223
224 switch (lport->lport_proto_id) {
225 case SCSI_PROTOCOL_FCP:
226 default:
227 proto_id = fc_get_fabric_proto_ident(se_tpg);
228 break;
229 }
230
231 return proto_id;
232}
233
234static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
235{
236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
237 struct tcm_qla2xxx_tpg, se_tpg);
238 struct tcm_qla2xxx_lport *lport = tpg->lport;
239
c046aa0f 240 return lport->lport_naa_name;
75f8c1f6
NB		 241}
242
243static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
244{
245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
246 struct tcm_qla2xxx_tpg, se_tpg);
247 struct tcm_qla2xxx_lport *lport = tpg->lport;
248
249 return &lport->lport_npiv_name[0];
250}
251
252static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
253{
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
256 return tpg->lport_tpgt;
257}
258
259static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
260{
261 return 1;
262}
263
264static u32 tcm_qla2xxx_get_pr_transport_id(
265 struct se_portal_group *se_tpg,
266 struct se_node_acl *se_nacl,
267 struct t10_pr_registration *pr_reg,
268 int *format_code,
269 unsigned char *buf)
270{
271 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
272 struct tcm_qla2xxx_tpg, se_tpg);
273 struct tcm_qla2xxx_lport *lport = tpg->lport;
274 int ret = 0;
275
276 switch (lport->lport_proto_id) {
277 case SCSI_PROTOCOL_FCP:
278 default:
279 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
280 format_code, buf);
281 break;
282 }
283
284 return ret;
285}
286
287static u32 tcm_qla2xxx_get_pr_transport_id_len(
288 struct se_portal_group *se_tpg,
289 struct se_node_acl *se_nacl,
290 struct t10_pr_registration *pr_reg,
291 int *format_code)
292{
293 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
294 struct tcm_qla2xxx_tpg, se_tpg);
295 struct tcm_qla2xxx_lport *lport = tpg->lport;
296 int ret = 0;
297
298 switch (lport->lport_proto_id) {
299 case SCSI_PROTOCOL_FCP:
300 default:
301 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
302 format_code);
303 break;
304 }
305
306 return ret;
307}
308
309static char *tcm_qla2xxx_parse_pr_out_transport_id(
310 struct se_portal_group *se_tpg,
311 const char *buf,
312 u32 *out_tid_len,
313 char **port_nexus_ptr)
314{
315 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
316 struct tcm_qla2xxx_tpg, se_tpg);
317 struct tcm_qla2xxx_lport *lport = tpg->lport;
318 char *tid = NULL;
319
320 switch (lport->lport_proto_id) {
321 case SCSI_PROTOCOL_FCP:
322 default:
323 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
324 port_nexus_ptr);
325 break;
326 }
327
328 return tid;
329}
330
331static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
332{
333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
334 struct tcm_qla2xxx_tpg, se_tpg);
335
336 return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
337}
338
339static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
340{
341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
342 struct tcm_qla2xxx_tpg, se_tpg);
343
344 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
345}
346
347static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
348{
349 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
350 struct tcm_qla2xxx_tpg, se_tpg);
351
352 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
353}
354
355static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
356{
357 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
358 struct tcm_qla2xxx_tpg, se_tpg);
359
360 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
361}
362
de04a8aa
AG		 363static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
364{
365 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
366 struct tcm_qla2xxx_tpg, se_tpg);
367
368 return QLA_TPG_ATTRIB(tpg)->demo_mode_login_only;
369}
370
75f8c1f6
NB		 371static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
372 struct se_portal_group *se_tpg)
373{
374 struct tcm_qla2xxx_nacl *nacl;
375
376 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
377 if (!nacl) {
6efb3c0a 378 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
75f8c1f6
NB		 379 return NULL;
380 }
381
382 return &nacl->se_node_acl;
383}
384
385static void tcm_qla2xxx_release_fabric_acl(
386 struct se_portal_group *se_tpg,
387 struct se_node_acl *se_nacl)
388{
389 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
390 struct tcm_qla2xxx_nacl, se_node_acl);
391 kfree(nacl);
392}
393
394static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
395{
396 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
397 struct tcm_qla2xxx_tpg, se_tpg);
398
399 return tpg->lport_tpgt;
400}
401
402static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
403{
404 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
405 struct qla_tgt_mgmt_cmd, free_work);
406
407 transport_generic_free_cmd(&mcmd->se_cmd, 0);
408}
409
410/*
411 * Called from qla_target_template->free_mcmd(), and will call
412 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
413 * release callback. qla_hw_data->hardware_lock is expected to be held
414 */
415static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
416{
417 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
418 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
419}
420
421static void tcm_qla2xxx_complete_free(struct work_struct *work)
422{
423 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
424
425 transport_generic_free_cmd(&cmd->se_cmd, 0);
426}
427
428/*
429 * Called from qla_target_template->free_cmd(), and will call
430 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
431 * release callback. qla_hw_data->hardware_lock is expected to be held
432 */
433static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
434{
435 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
436 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
437}
438
439/*
440 * Called from struct target_core_fabric_ops->check_stop_free() context
441 */
442static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
443{
444 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
445}
446
447/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
448 * fabric descriptor @se_cmd command to release
449 */
450static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
451{
452 struct qla_tgt_cmd *cmd;
453
454 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
455 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
456 struct qla_tgt_mgmt_cmd, se_cmd);
457 qlt_free_mcmd(mcmd);
458 return;
459 }
460
461 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
462 qlt_free_cmd(cmd);
463}
464
465static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
466{
467 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
468 struct scsi_qla_host *vha;
469 unsigned long flags;
470
471 BUG_ON(!sess);
472 vha = sess->vha;
473
474 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
1c7b13fe 475 target_sess_cmd_list_set_waiting(se_sess);
75f8c1f6
NB		 476 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
477
478 return 1;
479}
480
481static void tcm_qla2xxx_close_session(struct se_session *se_sess)
482{
483 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
484 struct scsi_qla_host *vha;
485 unsigned long flags;
486
487 BUG_ON(!sess);
488 vha = sess->vha;
489
490 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
491 qlt_unreg_sess(sess);
492 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
493}
494
495static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
496{
497 return 0;
498}
499
500/*
501 * The LIO target core uses DMA_TO_DEVICE to mean that data is going
502 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
503 * that data is coming from the target (eg handling a READ). However,
504 * this is just the opposite of what we have to tell the DMA mapping
505 * layer -- eg when handling a READ, the HBA will have to DMA the data
506 * out of memory so it can send it to the initiator, which means we
507 * need to use DMA_TO_DEVICE when we map the data.
508 */
509static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
510{
511 if (se_cmd->se_cmd_flags & SCF_BIDI)
512 return DMA_BIDIRECTIONAL;
513
514 switch (se_cmd->data_direction) {
515 case DMA_TO_DEVICE:
516 return DMA_FROM_DEVICE;
517 case DMA_FROM_DEVICE:
518 return DMA_TO_DEVICE;
519 case DMA_NONE:
520 default:
521 return DMA_NONE;
522 }
523}
524
525static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
526{
527 struct qla_tgt_cmd *cmd = container_of(se_cmd,
528 struct qla_tgt_cmd, se_cmd);
529
530 cmd->bufflen = se_cmd->data_length;
531 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
532
533 cmd->sg_cnt = se_cmd->t_data_nents;
534 cmd->sg = se_cmd->t_data_sg;
535
536 /*
537 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
538 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
539 */
540 return qlt_rdy_to_xfer(cmd);
541}
542
543static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
544{
545 unsigned long flags;
546 /*
547 * Check for WRITE_PENDING status to determine if we need to wait for
548 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
549 */
550 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
551 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
552 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
553 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
554 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
555 3000);
556 return 0;
557 }
558 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
559
560 return 0;
561}
562
563static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
564{
565 return;
566}
567
568static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
569{
570 struct qla_tgt_cmd *cmd = container_of(se_cmd,
571 struct qla_tgt_cmd, se_cmd);
572
573 return cmd->tag;
574}
575
576static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
577{
578 return 0;
579}
580
581/*
582 * Called from process context in qla_target.c:qlt_do_work() code
583 */
584static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
585 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
586 int data_dir, int bidi)
587{
588 struct se_cmd *se_cmd = &cmd->se_cmd;
589 struct se_session *se_sess;
590 struct qla_tgt_sess *sess;
591 int flags = TARGET_SCF_ACK_KREF;
592
593 if (bidi)
594 flags |= TARGET_SCF_BIDI_OP;
595
596 sess = cmd->sess;
597 if (!sess) {
598 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
599 return -EINVAL;
600 }
601
602 se_sess = sess->se_sess;
603 if (!se_sess) {
604 pr_err("Unable to locate active struct se_session\n");
605 return -EINVAL;
606 }
607
d6dfc868 608 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
75f8c1f6
NB		 609 cmd->unpacked_lun, data_length, fcp_task_attr,
610 data_dir, flags);
75f8c1f6
NB		 611}
612
43381ce8 613static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
75f8c1f6
NB		 614{
615 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
75f8c1f6 616
75f8c1f6
NB		 617 /*
618 * Ensure that the complete FCP WRITE payload has been received.
619 * Otherwise return an exception via CHECK_CONDITION status.
620 */
621 if (!cmd->write_data_transferred) {
622 /*
623 * Check if se_cmd has already been aborted via LUN_RESET, and
624 * waiting upon completion in tcm_qla2xxx_write_pending_status()
625 */
43381ce8
CH		 626 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
627 complete(&cmd->se_cmd.t_transport_stop_comp);
628 return;
75f8c1f6 629 }
75f8c1f6 630
de103c93
CH		 631 transport_generic_request_failure(&cmd->se_cmd,
632 TCM_CHECK_CONDITION_ABORT_CMD);
43381ce8 633 return;
75f8c1f6 634 }
43381ce8
CH		 635
636 return target_execute_cmd(&cmd->se_cmd);
637}
638
639/*
640 * Called from qla_target.c:qlt_do_ctio_completion()
641 */
642static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
643{
644 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
645 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
75f8c1f6
NB		 646}
647
648/*
649 * Called from qla_target.c:qlt_issue_task_mgmt()
650 */
9389c3c9
RD		 651static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
652 uint8_t tmr_func, uint32_t tag)
75f8c1f6
NB		 653{
654 struct qla_tgt_sess *sess = mcmd->sess;
655 struct se_cmd *se_cmd = &mcmd->se_cmd;
656
657 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
658 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
659}
660
661static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
662{
663 struct qla_tgt_cmd *cmd = container_of(se_cmd,
664 struct qla_tgt_cmd, se_cmd);
665
666 cmd->bufflen = se_cmd->data_length;
667 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
668 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
669
670 cmd->sg_cnt = se_cmd->t_data_nents;
671 cmd->sg = se_cmd->t_data_sg;
672 cmd->offset = 0;
673
674 /*
675 * Now queue completed DATA_IN the qla2xxx LLD and response ring
676 */
677 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
678 se_cmd->scsi_status);
679}
680
681static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
682{
683 struct qla_tgt_cmd *cmd = container_of(se_cmd,
684 struct qla_tgt_cmd, se_cmd);
685 int xmit_type = QLA_TGT_XMIT_STATUS;
686
687 cmd->bufflen = se_cmd->data_length;
688 cmd->sg = NULL;
689 cmd->sg_cnt = 0;
690 cmd->offset = 0;
691 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
692 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
693
694 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
695 /*
696 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
697 * for qla_tgt_xmit_response LLD code
698 */
b5aff3d2
RD		 699 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
700 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
701 se_cmd->residual_count = 0;
702 }
75f8c1f6 703 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
b5aff3d2 704 se_cmd->residual_count += se_cmd->data_length;
75f8c1f6
NB		 705
706 cmd->bufflen = 0;
707 }
708 /*
709 * Now queue status response to qla2xxx LLD code and response ring
710 */
711 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
712}
713
b79fafac 714static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
75f8c1f6
NB		 715{
716 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
717 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
718 struct qla_tgt_mgmt_cmd, se_cmd);
719
720 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
721 mcmd, se_tmr->function, se_tmr->response);
722 /*
723 * Do translation between TCM TM response codes and
724 * QLA2xxx FC TM response codes.
725 */
726 switch (se_tmr->response) {
727 case TMR_FUNCTION_COMPLETE:
728 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
729 break;
730 case TMR_TASK_DOES_NOT_EXIST:
731 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
732 break;
733 case TMR_FUNCTION_REJECTED:
734 mcmd->fc_tm_rsp = FC_TM_REJECT;
735 break;
736 case TMR_LUN_DOES_NOT_EXIST:
737 default:
738 mcmd->fc_tm_rsp = FC_TM_FAILED;
739 break;
740 }
741 /*
742 * Queue the TM response to QLA2xxx LLD to build a
743 * CTIO response packet.
744 */
745 qlt_xmit_tm_rsp(mcmd);
75f8c1f6
NB		 746}
747
75f8c1f6
NB		 748/* Local pointer to allocated TCM configfs fabric module */
749struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
750struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
751
f2d5d9b9
NB		 752static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
753 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
75f8c1f6
NB		 754/*
755 * Expected to be called with struct qla_hw_data->hardware_lock held
756 */
757static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
758{
759 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
760 struct se_portal_group *se_tpg = se_nacl->se_tpg;
761 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
762 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
763 struct tcm_qla2xxx_lport, lport_wwn);
764 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
765 struct tcm_qla2xxx_nacl, se_node_acl);
766 void *node;
767
768 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
769
770 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
771 WARN_ON(node && (node != se_nacl));
772
773 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
774 se_nacl, nacl->nport_wwnn, nacl->nport_id);
f2d5d9b9
NB		 775 /*
776 * Now clear the se_nacl and session pointers from our HW lport lookup
777 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
778 *
779 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
780 * target_wait_for_sess_cmds() before the session waits for outstanding
781 * I/O to complete, to avoid a race between session shutdown execution
782 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
783 */
784 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
75f8c1f6
NB		 785}
786
aaf68b75
JE		 787static void tcm_qla2xxx_release_session(struct kref *kref)
788{
789 struct se_session *se_sess = container_of(kref,
790 struct se_session, sess_kref);
791
792 qlt_unreg_sess(se_sess->fabric_sess_ptr);
793}
794
795static void tcm_qla2xxx_put_session(struct se_session *se_sess)
796{
797 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
798 struct qla_hw_data *ha = sess->vha->hw;
799 unsigned long flags;
800
801 spin_lock_irqsave(&ha->hardware_lock, flags);
802 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
803 spin_unlock_irqrestore(&ha->hardware_lock, flags);
804}
805
75f8c1f6
NB		 806static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
807{
08234e3a
JE		 808 assert_spin_locked(&sess->vha->hw->hardware_lock);
809 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
75f8c1f6
NB		 810}
811
812static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
813{
08234e3a
JE		 814 assert_spin_locked(&sess->vha->hw->hardware_lock);
815 target_sess_cmd_list_set_waiting(sess->se_sess);
75f8c1f6
NB		 816}
817
818static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
819 struct se_portal_group *se_tpg,
820 struct config_group *group,
821 const char *name)
822{
75f8c1f6
NB		 823 struct se_node_acl *se_nacl, *se_nacl_new;
824 struct tcm_qla2xxx_nacl *nacl;
825 u64 wwnn;
826 u32 qla2xxx_nexus_depth;
75f8c1f6
NB		 827
828 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
829 return ERR_PTR(-EINVAL);
830
831 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
832 if (!se_nacl_new)
833 return ERR_PTR(-ENOMEM);
834/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
835 qla2xxx_nexus_depth = 1;
836
837 /*
838 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
839 * when converting a NodeACL from demo mode -> explict
840 */
841 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
842 name, qla2xxx_nexus_depth);
843 if (IS_ERR(se_nacl)) {
844 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
845 return se_nacl;
846 }
847 /*
848 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
849 */
850 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
851 nacl->nport_wwnn = wwnn;
852 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
75f8c1f6
NB		 853
854 return se_nacl;
855}
856
857static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
858{
859 struct se_portal_group *se_tpg = se_acl->se_tpg;
860 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
861 struct tcm_qla2xxx_nacl, se_node_acl);
862
863 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
864 kfree(nacl);
865}
866
867/* Start items for tcm_qla2xxx_tpg_attrib_cit */
868
869#define DEF_QLA_TPG_ATTRIB(name) \
870 \
871static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
872 struct se_portal_group *se_tpg, \
873 char *page) \
874{ \
875 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
876 struct tcm_qla2xxx_tpg, se_tpg); \
877 \
878 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
879} \
880 \
881static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
882 struct se_portal_group *se_tpg, \
883 const char *page, \
884 size_t count) \
885{ \
886 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
887 struct tcm_qla2xxx_tpg, se_tpg); \
888 unsigned long val; \
889 int ret; \
890 \
891 ret = kstrtoul(page, 0, &val); \
892 if (ret < 0) { \
893 pr_err("kstrtoul() failed with" \
894 " ret: %d\n", ret); \
895 return -EINVAL; \
896 } \
897 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
898 \
899 return (!ret) ? count : -EINVAL; \
900}
901
902#define DEF_QLA_TPG_ATTR_BOOL(_name) \
903 \
904static int tcm_qla2xxx_set_attrib_##_name( \
905 struct tcm_qla2xxx_tpg *tpg, \
906 unsigned long val) \
907{ \
908 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
909 \
910 if ((val != 0) && (val != 1)) { \
911 pr_err("Illegal boolean value %lu\n", val); \
912 return -EINVAL; \
913 } \
914 \
915 a->_name = val; \
916 return 0; \
917}
918
919#define QLA_TPG_ATTR(_name, _mode) \
920 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
921
922/*
923 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
924 */
925DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
926DEF_QLA_TPG_ATTRIB(generate_node_acls);
927QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
928
929/*
930 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
931 */
932DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
933DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
934QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
935
936/*
937 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
938 */
939DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
940DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
941QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
942
943/*
944 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
945 */
946DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
947DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
948QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
949
de04a8aa
AG		 950/*
951 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
952 */
953DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
954DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
955QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
956
75f8c1f6
NB		 957static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
958 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
959 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
960 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
961 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
de04a8aa 962 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
75f8c1f6
NB		 963 NULL,
964};
965
966/* End items for tcm_qla2xxx_tpg_attrib_cit */
967
968static ssize_t tcm_qla2xxx_tpg_show_enable(
969 struct se_portal_group *se_tpg,
970 char *page)
971{
972 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
973 struct tcm_qla2xxx_tpg, se_tpg);
974
975 return snprintf(page, PAGE_SIZE, "%d\n",
976 atomic_read(&tpg->lport_tpg_enabled));
977}
978
979static ssize_t tcm_qla2xxx_tpg_store_enable(
980 struct se_portal_group *se_tpg,
981 const char *page,
982 size_t count)
983{
984 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
985 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
986 struct tcm_qla2xxx_lport, lport_wwn);
987 struct scsi_qla_host *vha = lport->qla_vha;
988 struct qla_hw_data *ha = vha->hw;
989 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
990 struct tcm_qla2xxx_tpg, se_tpg);
991 unsigned long op;
992 int rc;
993
994 rc = kstrtoul(page, 0, &op);
995 if (rc < 0) {
996 pr_err("kstrtoul() returned %d\n", rc);
997 return -EINVAL;
998 }
999 if ((op != 1) && (op != 0)) {
1000 pr_err("Illegal value for tpg_enable: %lu\n", op);
1001 return -EINVAL;
1002 }
1003
1004 if (op) {
1005 atomic_set(&tpg->lport_tpg_enabled, 1);
1006 qlt_enable_vha(vha);
1007 } else {
1008 if (!ha->tgt.qla_tgt) {
1009 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1010 return -ENODEV;
1011 }
1012 atomic_set(&tpg->lport_tpg_enabled, 0);
1013 qlt_stop_phase1(ha->tgt.qla_tgt);
1014 }
1015
1016 return count;
1017}
1018
1019TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1020
1021static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1022 &tcm_qla2xxx_tpg_enable.attr,
1023 NULL,
1024};
1025
1026static struct se_portal_group *tcm_qla2xxx_make_tpg(
1027 struct se_wwn *wwn,
1028 struct config_group *group,
1029 const char *name)
1030{
1031 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1032 struct tcm_qla2xxx_lport, lport_wwn);
1033 struct tcm_qla2xxx_tpg *tpg;
1034 unsigned long tpgt;
1035 int ret;
1036
1037 if (strstr(name, "tpgt_") != name)
1038 return ERR_PTR(-EINVAL);
1039 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1040 return ERR_PTR(-EINVAL);
1041
1042 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1043 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1044 return ERR_PTR(-ENOSYS);
1045 }
1046
1047 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1048 if (!tpg) {
1049 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1050 return ERR_PTR(-ENOMEM);
1051 }
1052 tpg->lport = lport;
1053 tpg->lport_tpgt = tpgt;
1054 /*
1055 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1056 * NodeACLs
1057 */
1058 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1059 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1060 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
de04a8aa 1061 QLA_TPG_ATTRIB(tpg)->demo_mode_login_only = 1;
75f8c1f6
NB		 1062
1063 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1064 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1065 if (ret < 0) {
1066 kfree(tpg);
1067 return NULL;
1068 }
1069 /*
1070 * Setup local TPG=1 pointer for non NPIV mode.
1071 */
1072 if (lport->qla_npiv_vp == NULL)
1073 lport->tpg_1 = tpg;
1074
1075 return &tpg->se_tpg;
1076}
1077
1078static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1079{
1080 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1081 struct tcm_qla2xxx_tpg, se_tpg);
1082 struct tcm_qla2xxx_lport *lport = tpg->lport;
1083 struct scsi_qla_host *vha = lport->qla_vha;
1084 struct qla_hw_data *ha = vha->hw;
1085 /*
1086 * Call into qla2x_target.c LLD logic to shutdown the active
1087 * FC Nexuses and disable target mode operation for this qla_hw_data
1088 */
1089 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1090 qlt_stop_phase1(ha->tgt.qla_tgt);
1091
1092 core_tpg_deregister(se_tpg);
1093 /*
1094 * Clear local TPG=1 pointer for non NPIV mode.
1095 */
1096 if (lport->qla_npiv_vp == NULL)
1097 lport->tpg_1 = NULL;
1098
1099 kfree(tpg);
1100}
1101
1102static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1103 struct se_wwn *wwn,
1104 struct config_group *group,
1105 const char *name)
1106{
1107 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1108 struct tcm_qla2xxx_lport, lport_wwn);
1109 struct tcm_qla2xxx_tpg *tpg;
1110 unsigned long tpgt;
1111 int ret;
1112
1113 if (strstr(name, "tpgt_") != name)
1114 return ERR_PTR(-EINVAL);
1115 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1116 return ERR_PTR(-EINVAL);
1117
1118 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1119 if (!tpg) {
1120 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1121 return ERR_PTR(-ENOMEM);
1122 }
1123 tpg->lport = lport;
1124 tpg->lport_tpgt = tpgt;
1125
1126 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1127 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1128 if (ret < 0) {
1129 kfree(tpg);
1130 return NULL;
1131 }
1132 return &tpg->se_tpg;
1133}
1134
1135/*
1136 * Expected to be called with struct qla_hw_data->hardware_lock held
1137 */
1138static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1139 scsi_qla_host_t *vha,
1140 const uint8_t *s_id)
1141{
1142 struct qla_hw_data *ha = vha->hw;
1143 struct tcm_qla2xxx_lport *lport;
1144 struct se_node_acl *se_nacl;
1145 struct tcm_qla2xxx_nacl *nacl;
1146 u32 key;
1147
1148 lport = ha->tgt.target_lport_ptr;
1149 if (!lport) {
1150 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1151 dump_stack();
1152 return NULL;
1153 }
1154
1155 key = (((unsigned long)s_id[0] << 16) |
1156 ((unsigned long)s_id[1] << 8) |
1157 (unsigned long)s_id[2]);
1158 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1159
1160 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1161 if (!se_nacl) {
1162 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1163 return NULL;
1164 }
1165 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1166 se_nacl, se_nacl->initiatorname);
1167
1168 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1169 if (!nacl->qla_tgt_sess) {
1170 pr_err("Unable to locate struct qla_tgt_sess\n");
1171 return NULL;
1172 }
1173
1174 return nacl->qla_tgt_sess;
1175}
1176
1177/*
1178 * Expected to be called with struct qla_hw_data->hardware_lock held
1179 */
1180static void tcm_qla2xxx_set_sess_by_s_id(
1181 struct tcm_qla2xxx_lport *lport,
1182 struct se_node_acl *new_se_nacl,
1183 struct tcm_qla2xxx_nacl *nacl,
1184 struct se_session *se_sess,
1185 struct qla_tgt_sess *qla_tgt_sess,
1186 uint8_t *s_id)
1187{
1188 u32 key;
1189 void *slot;
1190 int rc;
1191
1192 key = (((unsigned long)s_id[0] << 16) |
1193 ((unsigned long)s_id[1] << 8) |
1194 (unsigned long)s_id[2]);
1195 pr_debug("set_sess_by_s_id: %06x\n", key);
1196
1197 slot = btree_lookup32(&lport->lport_fcport_map, key);
1198 if (!slot) {
1199 if (new_se_nacl) {
1200 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1201 nacl->nport_id = key;
1202 rc = btree_insert32(&lport->lport_fcport_map, key,
1203 new_se_nacl, GFP_ATOMIC);
1204 if (rc)
1205 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1206 (int)key);
1207 } else {
1208 pr_debug("Wiping nonexisting fc_port entry\n");
1209 }
1210
1211 qla_tgt_sess->se_sess = se_sess;
1212 nacl->qla_tgt_sess = qla_tgt_sess;
1213 return;
1214 }
1215
1216 if (nacl->qla_tgt_sess) {
1217 if (new_se_nacl == NULL) {
1218 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1219 btree_remove32(&lport->lport_fcport_map, key);
1220 nacl->qla_tgt_sess = NULL;
1221 return;
1222 }
1223 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1224 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1225 qla_tgt_sess->se_sess = se_sess;
1226 nacl->qla_tgt_sess = qla_tgt_sess;
1227 return;
1228 }
1229
1230 if (new_se_nacl == NULL) {
1231 pr_debug("Clearing existing fc_port entry\n");
1232 btree_remove32(&lport->lport_fcport_map, key);
1233 return;
1234 }
1235
1236 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1237 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1238 qla_tgt_sess->se_sess = se_sess;
1239 nacl->qla_tgt_sess = qla_tgt_sess;
1240
1241 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1242 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1243}
1244
1245/*
1246 * Expected to be called with struct qla_hw_data->hardware_lock held
1247 */
1248static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1249 scsi_qla_host_t *vha,
1250 const uint16_t loop_id)
1251{
1252 struct qla_hw_data *ha = vha->hw;
1253 struct tcm_qla2xxx_lport *lport;
1254 struct se_node_acl *se_nacl;
1255 struct tcm_qla2xxx_nacl *nacl;
1256 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1257
1258 lport = ha->tgt.target_lport_ptr;
1259 if (!lport) {
1260 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1261 dump_stack();
1262 return NULL;
1263 }
1264
1265 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1266
1267 fc_loopid = lport->lport_loopid_map + loop_id;
1268 se_nacl = fc_loopid->se_nacl;
1269 if (!se_nacl) {
1270 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1271 loop_id);
1272 return NULL;
1273 }
1274
1275 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1276
1277 if (!nacl->qla_tgt_sess) {
1278 pr_err("Unable to locate struct qla_tgt_sess\n");
1279 return NULL;
1280 }
1281
1282 return nacl->qla_tgt_sess;
1283}
1284
1285/*
1286 * Expected to be called with struct qla_hw_data->hardware_lock held
1287 */
1288static void tcm_qla2xxx_set_sess_by_loop_id(
1289 struct tcm_qla2xxx_lport *lport,
1290 struct se_node_acl *new_se_nacl,
1291 struct tcm_qla2xxx_nacl *nacl,
1292 struct se_session *se_sess,
1293 struct qla_tgt_sess *qla_tgt_sess,
1294 uint16_t loop_id)
1295{
1296 struct se_node_acl *saved_nacl;
1297 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1298
1299 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1300
1301 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1302 lport->lport_loopid_map)[loop_id];
1303
1304 saved_nacl = fc_loopid->se_nacl;
1305 if (!saved_nacl) {
1306 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1307 fc_loopid->se_nacl = new_se_nacl;
1308 if (qla_tgt_sess->se_sess != se_sess)
1309 qla_tgt_sess->se_sess = se_sess;
1310 if (nacl->qla_tgt_sess != qla_tgt_sess)
1311 nacl->qla_tgt_sess = qla_tgt_sess;
1312 return;
1313 }
1314
1315 if (nacl->qla_tgt_sess) {
1316 if (new_se_nacl == NULL) {
1317 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1318 fc_loopid->se_nacl = NULL;
1319 nacl->qla_tgt_sess = NULL;
1320 return;
1321 }
1322
1323 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1324 fc_loopid->se_nacl = new_se_nacl;
1325 if (qla_tgt_sess->se_sess != se_sess)
1326 qla_tgt_sess->se_sess = se_sess;
1327 if (nacl->qla_tgt_sess != qla_tgt_sess)
1328 nacl->qla_tgt_sess = qla_tgt_sess;
1329 return;
1330 }
1331
1332 if (new_se_nacl == NULL) {
1333 pr_debug("Clearing fc_loopid->se_nacl\n");
1334 fc_loopid->se_nacl = NULL;
1335 return;
1336 }
1337
1338 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1339 fc_loopid->se_nacl = new_se_nacl;
1340 if (qla_tgt_sess->se_sess != se_sess)
1341 qla_tgt_sess->se_sess = se_sess;
1342 if (nacl->qla_tgt_sess != qla_tgt_sess)
1343 nacl->qla_tgt_sess = qla_tgt_sess;
1344
1345 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1346 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1347}
1348
f2d5d9b9
NB		 1349/*
1350 * Should always be called with qla_hw_data->hardware_lock held.
1351 */
1352static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1353 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1354{
1355 struct se_session *se_sess = sess->se_sess;
1356 unsigned char be_sid[3];
1357
1358 be_sid[0] = sess->s_id.b.domain;
1359 be_sid[1] = sess->s_id.b.area;
1360 be_sid[2] = sess->s_id.b.al_pa;
1361
1362 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1363 sess, be_sid);
1364 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1365 sess, sess->loop_id);
1366}
1367
75f8c1f6
NB		 1368static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1369{
1370 struct qla_tgt *tgt = sess->tgt;
1371 struct qla_hw_data *ha = tgt->ha;
1372 struct se_session *se_sess;
1373 struct se_node_acl *se_nacl;
1374 struct tcm_qla2xxx_lport *lport;
1375 struct tcm_qla2xxx_nacl *nacl;
75f8c1f6
NB		 1376
1377 BUG_ON(in_interrupt());
1378
1379 se_sess = sess->se_sess;
1380 if (!se_sess) {
1381 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1382 dump_stack();
1383 return;
1384 }
1385 se_nacl = se_sess->se_node_acl;
1386 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1387
1388 lport = ha->tgt.target_lport_ptr;
1389 if (!lport) {
1390 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1391 dump_stack();
1392 return;
1393 }
be646c2d 1394 target_wait_for_sess_cmds(se_sess);
75f8c1f6
NB		 1395
1396 transport_deregister_session_configfs(sess->se_sess);
1397 transport_deregister_session(sess->se_sess);
1398}
1399
1400/*
1401 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1402 * to locate struct se_node_acl
1403 */
1404static int tcm_qla2xxx_check_initiator_node_acl(
1405 scsi_qla_host_t *vha,
1406 unsigned char *fc_wwpn,
1407 void *qla_tgt_sess,
1408 uint8_t *s_id,
1409 uint16_t loop_id)
1410{
1411 struct qla_hw_data *ha = vha->hw;
1412 struct tcm_qla2xxx_lport *lport;
1413 struct tcm_qla2xxx_tpg *tpg;
1414 struct tcm_qla2xxx_nacl *nacl;
1415 struct se_portal_group *se_tpg;
1416 struct se_node_acl *se_nacl;
1417 struct se_session *se_sess;
1418 struct qla_tgt_sess *sess = qla_tgt_sess;
1419 unsigned char port_name[36];
1420 unsigned long flags;
1421
1422 lport = ha->tgt.target_lport_ptr;
1423 if (!lport) {
1424 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1425 dump_stack();
1426 return -EINVAL;
1427 }
1428 /*
1429 * Locate the TPG=1 reference..
1430 */
1431 tpg = lport->tpg_1;
1432 if (!tpg) {
1433 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1434 return -EINVAL;
1435 }
1436 se_tpg = &tpg->se_tpg;
1437
1438 se_sess = transport_init_session();
1439 if (IS_ERR(se_sess)) {
1440 pr_err("Unable to initialize struct se_session\n");
1441 return PTR_ERR(se_sess);
1442 }
1443 /*
1444 * Format the FCP Initiator port_name into colon seperated values to
1445 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1446 */
1447 memset(&port_name, 0, 36);
1448 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1449 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1450 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1451 /*
1452 * Locate our struct se_node_acl either from an explict NodeACL created
1453 * via ConfigFS, or via running in TPG demo mode.
1454 */
1455 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1456 port_name);
1457 if (!se_sess->se_node_acl) {
1458 transport_free_session(se_sess);
1459 return -EINVAL;
1460 }
1461 se_nacl = se_sess->se_node_acl;
1462 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1463 /*
1464 * And now setup the new se_nacl and session pointers into our HW lport
1465 * mappings for fabric S_ID and LOOP_ID.
1466 */
1467 spin_lock_irqsave(&ha->hardware_lock, flags);
1468 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1469 qla_tgt_sess, s_id);
1470 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1471 qla_tgt_sess, loop_id);
1472 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1473 /*
1474 * Finally register the new FC Nexus with TCM
1475 */
1476 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1477
1478 return 0;
1479}
1480
c8292d1d
RD		 1481static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1482 uint16_t loop_id, bool conf_compl_supported)
1483{
1484 struct qla_tgt *tgt = sess->tgt;
1485 struct qla_hw_data *ha = tgt->ha;
1486 struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
1487 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1488 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1489 struct tcm_qla2xxx_nacl, se_node_acl);
1490 u32 key;
1491
1492
1493 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1494 pr_info("Updating session %p from port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1495 sess,
1496 sess->port_name[0], sess->port_name[1],
1497 sess->port_name[2], sess->port_name[3],
1498 sess->port_name[4], sess->port_name[5],
1499 sess->port_name[6], sess->port_name[7],
1500 sess->loop_id, loop_id,
1501 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
1502 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1503
1504 if (sess->loop_id != loop_id) {
1505 /*
1506 * Because we can shuffle loop IDs around and we
1507 * update different sessions non-atomically, we might
1508 * have overwritten this session's old loop ID
1509 * already, and we might end up overwriting some other
1510 * session that will be updated later. So we have to
1511 * be extra careful and we can't warn about those things...
1512 */
1513 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1514 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1515
1516 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1517
1518 sess->loop_id = loop_id;
1519 }
1520
1521 if (sess->s_id.b24 != s_id.b24) {
1522 key = (((u32) sess->s_id.b.domain << 16) |
1523 ((u32) sess->s_id.b.area << 8) |
1524 ((u32) sess->s_id.b.al_pa));
1525
1526 if (btree_lookup32(&lport->lport_fcport_map, key))
1527 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1528 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1529 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1530 else
1531 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1532 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1533
1534 key = (((u32) s_id.b.domain << 16) |
1535 ((u32) s_id.b.area << 8) |
1536 ((u32) s_id.b.al_pa));
1537
1538 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1539 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1540 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1541 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1542 } else {
1543 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1544 }
1545
1546 sess->s_id = s_id;
1547 nacl->nport_id = key;
1548 }
1549
1550 sess->conf_compl_supported = conf_compl_supported;
1551}
1552
75f8c1f6
NB		 1553/*
1554 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1555 */
1556static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1557 .handle_cmd = tcm_qla2xxx_handle_cmd,
1558 .handle_data = tcm_qla2xxx_handle_data,
1559 .handle_tmr = tcm_qla2xxx_handle_tmr,
1560 .free_cmd = tcm_qla2xxx_free_cmd,
1561 .free_mcmd = tcm_qla2xxx_free_mcmd,
1562 .free_session = tcm_qla2xxx_free_session,
c8292d1d 1563 .update_sess = tcm_qla2xxx_update_sess,
75f8c1f6
NB		 1564 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1565 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1566 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1567 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1568 .put_sess = tcm_qla2xxx_put_sess,
1569 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1570};
1571
1572static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1573{
1574 int rc;
1575
1576 rc = btree_init32(&lport->lport_fcport_map);
1577 if (rc) {
1578 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1579 return rc;
1580 }
1581
1582 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1583 65536);
1584 if (!lport->lport_loopid_map) {
1585 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1586 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1587 btree_destroy32(&lport->lport_fcport_map);
1588 return -ENOMEM;
1589 }
1590 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1591 * 65536);
1592 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1593 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1594 return 0;
1595}
1596
1597static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1598{
1599 struct qla_hw_data *ha = vha->hw;
1600 struct tcm_qla2xxx_lport *lport;
1601 /*
1602 * Setup local pointer to vha, NPIV VP pointer (if present) and
1603 * vha->tcm_lport pointer
1604 */
1605 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1606 lport->qla_vha = vha;
1607
1608 return 0;
1609}
1610
1611static struct se_wwn *tcm_qla2xxx_make_lport(
1612 struct target_fabric_configfs *tf,
1613 struct config_group *group,
1614 const char *name)
1615{
1616 struct tcm_qla2xxx_lport *lport;
1617 u64 wwpn;
1618 int ret = -ENODEV;
1619
1620 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1621 return ERR_PTR(-EINVAL);
1622
1623 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1624 if (!lport) {
1625 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1626 return ERR_PTR(-ENOMEM);
1627 }
1628 lport->lport_wwpn = wwpn;
1629 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1630 wwpn);
c046aa0f 1631 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
75f8c1f6
NB		 1632
1633 ret = tcm_qla2xxx_init_lport(lport);
1634 if (ret != 0)
1635 goto out;
1636
1637 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1638 tcm_qla2xxx_lport_register_cb, lport);
1639 if (ret != 0)
1640 goto out_lport;
1641
1642 return &lport->lport_wwn;
1643out_lport:
1644 vfree(lport->lport_loopid_map);
1645 btree_destroy32(&lport->lport_fcport_map);
1646out:
1647 kfree(lport);
1648 return ERR_PTR(ret);
1649}
1650
1651static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1652{
1653 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1654 struct tcm_qla2xxx_lport, lport_wwn);
1655 struct scsi_qla_host *vha = lport->qla_vha;
1656 struct qla_hw_data *ha = vha->hw;
1657 struct se_node_acl *node;
1658 u32 key = 0;
1659
1660 /*
1661 * Call into qla2x_target.c LLD logic to complete the
1662 * shutdown of struct qla_tgt after the call to
1663 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1664 */
1665 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1666 qlt_stop_phase2(ha->tgt.qla_tgt);
1667
1668 qlt_lport_deregister(vha);
1669
1670 vfree(lport->lport_loopid_map);
1671 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1672 btree_remove32(&lport->lport_fcport_map, key);
1673 btree_destroy32(&lport->lport_fcport_map);
1674 kfree(lport);
1675}
1676
1677static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1678 struct target_fabric_configfs *tf,
1679 struct config_group *group,
1680 const char *name)
1681{
1682 struct tcm_qla2xxx_lport *lport;
1683 u64 npiv_wwpn, npiv_wwnn;
1684 int ret;
1685
1686 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1687 &npiv_wwpn, &npiv_wwnn) < 0)
1688 return ERR_PTR(-EINVAL);
1689
1690 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1691 if (!lport) {
1692 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1693 return ERR_PTR(-ENOMEM);
1694 }
1695 lport->lport_npiv_wwpn = npiv_wwpn;
1696 lport->lport_npiv_wwnn = npiv_wwnn;
1697 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1698 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
c046aa0f 1699 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
75f8c1f6
NB		 1700
1701/* FIXME: tcm_qla2xxx_npiv_make_lport */
1702 ret = -ENOSYS;
1703 if (ret != 0)
1704 goto out;
1705
1706 return &lport->lport_wwn;
1707out:
1708 kfree(lport);
1709 return ERR_PTR(ret);
1710}
1711
1712static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1713{
1714 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1715 struct tcm_qla2xxx_lport, lport_wwn);
1716 struct scsi_qla_host *vha = lport->qla_vha;
1717 struct Scsi_Host *sh = vha->host;
1718 /*
1719 * Notify libfc that we want to release the lport->npiv_vport
1720 */
1721 fc_vport_terminate(lport->npiv_vport);
1722
1723 scsi_host_put(sh);
1724 kfree(lport);
1725}
1726
1727
1728static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1729 struct target_fabric_configfs *tf,
1730 char *page)
1731{
1732 return sprintf(page,
1733 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1734 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1735 utsname()->machine);
1736}
1737
1738TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1739
1740static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1741 &tcm_qla2xxx_wwn_version.attr,
1742 NULL,
1743};
1744
1745static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1746 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1747 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1748 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1749 .tpg_get_tag = tcm_qla2xxx_get_tag,
1750 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1751 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1752 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1753 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1754 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1755 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1756 .tpg_check_demo_mode_write_protect =
1757 tcm_qla2xxx_check_demo_write_protect,
1758 .tpg_check_prod_mode_write_protect =
1759 tcm_qla2xxx_check_prod_write_protect,
de04a8aa 1760 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
75f8c1f6
NB		 1761 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1762 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1763 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
75f8c1f6
NB		 1764 .check_stop_free = tcm_qla2xxx_check_stop_free,
1765 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1766 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1767 .shutdown_session = tcm_qla2xxx_shutdown_session,
1768 .close_session = tcm_qla2xxx_close_session,
1769 .sess_get_index = tcm_qla2xxx_sess_get_index,
1770 .sess_get_initiator_sid = NULL,
1771 .write_pending = tcm_qla2xxx_write_pending,
1772 .write_pending_status = tcm_qla2xxx_write_pending_status,
1773 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1774 .get_task_tag = tcm_qla2xxx_get_task_tag,
1775 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1776 .queue_data_in = tcm_qla2xxx_queue_data_in,
1777 .queue_status = tcm_qla2xxx_queue_status,
1778 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
75f8c1f6
NB		 1779 /*
1780 * Setup function pointers for generic logic in
1781 * target_core_fabric_configfs.c
1782 */
1783 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1784 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1785 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1786 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1787 .fabric_post_link = NULL,
1788 .fabric_pre_unlink = NULL,
1789 .fabric_make_np = NULL,
1790 .fabric_drop_np = NULL,
1791 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1792 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1793};
1794
1795static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1796 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1797 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1798 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1799 .tpg_get_tag = tcm_qla2xxx_get_tag,
1800 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1801 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1802 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1803 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1804 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1805 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1806 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1807 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
de04a8aa 1808 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
75f8c1f6
NB		 1809 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1810 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1811 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1812 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1813 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1814 .shutdown_session = tcm_qla2xxx_shutdown_session,
1815 .close_session = tcm_qla2xxx_close_session,
1816 .sess_get_index = tcm_qla2xxx_sess_get_index,
1817 .sess_get_initiator_sid = NULL,
1818 .write_pending = tcm_qla2xxx_write_pending,
1819 .write_pending_status = tcm_qla2xxx_write_pending_status,
1820 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1821 .get_task_tag = tcm_qla2xxx_get_task_tag,
1822 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1823 .queue_data_in = tcm_qla2xxx_queue_data_in,
1824 .queue_status = tcm_qla2xxx_queue_status,
1825 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
75f8c1f6
NB		 1826 /*
1827 * Setup function pointers for generic logic in
1828 * target_core_fabric_configfs.c
1829 */
1830 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1831 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1832 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1833 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1834 .fabric_post_link = NULL,
1835 .fabric_pre_unlink = NULL,
1836 .fabric_make_np = NULL,
1837 .fabric_drop_np = NULL,
1838 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1839 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1840};
1841
1842static int tcm_qla2xxx_register_configfs(void)
1843{
1844 struct target_fabric_configfs *fabric, *npiv_fabric;
1845 int ret;
1846
1847 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1848 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1849 utsname()->machine);
1850 /*
1851 * Register the top level struct config_item_type with TCM core
1852 */
1853 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1854 if (IS_ERR(fabric)) {
1855 pr_err("target_fabric_configfs_init() failed\n");
1856 return PTR_ERR(fabric);
1857 }
1858 /*
1859 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1860 */
1861 fabric->tf_ops = tcm_qla2xxx_ops;
1862 /*
1863 * Setup default attribute lists for various fabric->tf_cit_tmpl
1864 */
1865 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1866 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1867 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1868 tcm_qla2xxx_tpg_attrib_attrs;
1869 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1870 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1871 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1872 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1873 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1874 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1875 /*
1876 * Register the fabric for use within TCM
1877 */
1878 ret = target_fabric_configfs_register(fabric);
1879 if (ret < 0) {
1880 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1881 return ret;
1882 }
1883 /*
1884 * Setup our local pointer to *fabric
1885 */
1886 tcm_qla2xxx_fabric_configfs = fabric;
1887 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1888
1889 /*
1890 * Register the top level struct config_item_type for NPIV with TCM core
1891 */
1892 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1893 if (IS_ERR(npiv_fabric)) {
1894 pr_err("target_fabric_configfs_init() failed\n");
1895 ret = PTR_ERR(npiv_fabric);
1896 goto out_fabric;
1897 }
1898 /*
1899 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1900 */
1901 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1902 /*
1903 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1904 */
1905 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1906 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1907 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1908 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1909 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1910 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1911 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1912 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1913 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1914 /*
1915 * Register the npiv_fabric for use within TCM
1916 */
1917 ret = target_fabric_configfs_register(npiv_fabric);
1918 if (ret < 0) {
1919 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1920 goto out_fabric;
1921 }
1922 /*
1923 * Setup our local pointer to *npiv_fabric
1924 */
1925 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1926 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1927
1928 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1929 WQ_MEM_RECLAIM, 0);
1930 if (!tcm_qla2xxx_free_wq) {
1931 ret = -ENOMEM;
1932 goto out_fabric_npiv;
1933 }
1934
1935 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1936 if (!tcm_qla2xxx_cmd_wq) {
1937 ret = -ENOMEM;
1938 goto out_free_wq;
1939 }
1940
1941 return 0;
1942
1943out_free_wq:
1944 destroy_workqueue(tcm_qla2xxx_free_wq);
1945out_fabric_npiv:
1946 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1947out_fabric:
1948 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1949 return ret;
1950}
1951
1952static void tcm_qla2xxx_deregister_configfs(void)
1953{
1954 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1955 destroy_workqueue(tcm_qla2xxx_free_wq);
1956
1957 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1958 tcm_qla2xxx_fabric_configfs = NULL;
1959 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1960
1961 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1962 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1963 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1964}
1965
1966static int __init tcm_qla2xxx_init(void)
1967{
1968 int ret;
1969
1970 ret = tcm_qla2xxx_register_configfs();
1971 if (ret < 0)
1972 return ret;
1973
1974 return 0;
1975}
1976
1977static void __exit tcm_qla2xxx_exit(void)
1978{
1979 tcm_qla2xxx_deregister_configfs();
1980}
1981
1982MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1983MODULE_LICENSE("GPL");
1984module_init(tcm_qla2xxx_init);
1985module_exit(tcm_qla2xxx_exit);
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