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target: Check number of unmap descriptors against our limit
[linux-2.6-block.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
240 return &lport->lport_name[0];
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
363static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
364 struct se_portal_group *se_tpg)
365{
366 struct tcm_qla2xxx_nacl *nacl;
367
368 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
369 if (!nacl) {
370 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
371 return NULL;
372 }
373
374 return &nacl->se_node_acl;
375}
376
377static void tcm_qla2xxx_release_fabric_acl(
378 struct se_portal_group *se_tpg,
379 struct se_node_acl *se_nacl)
380{
381 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
382 struct tcm_qla2xxx_nacl, se_node_acl);
383 kfree(nacl);
384}
385
386static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
387{
388 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
389 struct tcm_qla2xxx_tpg, se_tpg);
390
391 return tpg->lport_tpgt;
392}
393
394static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
395{
396 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
397 struct qla_tgt_mgmt_cmd, free_work);
398
399 transport_generic_free_cmd(&mcmd->se_cmd, 0);
400}
401
402/*
403 * Called from qla_target_template->free_mcmd(), and will call
404 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
405 * release callback. qla_hw_data->hardware_lock is expected to be held
406 */
407static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
408{
409 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
410 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
411}
412
413static void tcm_qla2xxx_complete_free(struct work_struct *work)
414{
415 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
416
417 transport_generic_free_cmd(&cmd->se_cmd, 0);
418}
419
420/*
421 * Called from qla_target_template->free_cmd(), and will call
422 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
423 * release callback. qla_hw_data->hardware_lock is expected to be held
424 */
425static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
426{
427 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
428 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
429}
430
431/*
432 * Called from struct target_core_fabric_ops->check_stop_free() context
433 */
434static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
435{
436 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
437}
438
439/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
440 * fabric descriptor @se_cmd command to release
441 */
442static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
443{
444 struct qla_tgt_cmd *cmd;
445
446 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
447 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
448 struct qla_tgt_mgmt_cmd, se_cmd);
449 qlt_free_mcmd(mcmd);
450 return;
451 }
452
453 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
454 qlt_free_cmd(cmd);
455}
456
457static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
458{
459 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
460 struct scsi_qla_host *vha;
461 unsigned long flags;
462
463 BUG_ON(!sess);
464 vha = sess->vha;
465
466 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
1c7b13fe 467 target_sess_cmd_list_set_waiting(se_sess);
75f8c1f6
NB		 468 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
469
470 return 1;
471}
472
473static void tcm_qla2xxx_close_session(struct se_session *se_sess)
474{
475 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
476 struct scsi_qla_host *vha;
477 unsigned long flags;
478
479 BUG_ON(!sess);
480 vha = sess->vha;
481
482 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
483 qlt_unreg_sess(sess);
484 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
485}
486
487static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
488{
489 return 0;
490}
491
492/*
493 * The LIO target core uses DMA_TO_DEVICE to mean that data is going
494 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
495 * that data is coming from the target (eg handling a READ). However,
496 * this is just the opposite of what we have to tell the DMA mapping
497 * layer -- eg when handling a READ, the HBA will have to DMA the data
498 * out of memory so it can send it to the initiator, which means we
499 * need to use DMA_TO_DEVICE when we map the data.
500 */
501static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
502{
503 if (se_cmd->se_cmd_flags & SCF_BIDI)
504 return DMA_BIDIRECTIONAL;
505
506 switch (se_cmd->data_direction) {
507 case DMA_TO_DEVICE:
508 return DMA_FROM_DEVICE;
509 case DMA_FROM_DEVICE:
510 return DMA_TO_DEVICE;
511 case DMA_NONE:
512 default:
513 return DMA_NONE;
514 }
515}
516
517static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
518{
519 struct qla_tgt_cmd *cmd = container_of(se_cmd,
520 struct qla_tgt_cmd, se_cmd);
521
522 cmd->bufflen = se_cmd->data_length;
523 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
524
525 cmd->sg_cnt = se_cmd->t_data_nents;
526 cmd->sg = se_cmd->t_data_sg;
527
528 /*
529 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
530 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
531 */
532 return qlt_rdy_to_xfer(cmd);
533}
534
535static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
536{
537 unsigned long flags;
538 /*
539 * Check for WRITE_PENDING status to determine if we need to wait for
540 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
541 */
542 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
543 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
544 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
545 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
546 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
547 3000);
548 return 0;
549 }
550 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
551
552 return 0;
553}
554
555static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
556{
557 return;
558}
559
560static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
561{
562 struct qla_tgt_cmd *cmd = container_of(se_cmd,
563 struct qla_tgt_cmd, se_cmd);
564
565 return cmd->tag;
566}
567
568static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
569{
570 return 0;
571}
572
573/*
574 * Called from process context in qla_target.c:qlt_do_work() code
575 */
576static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
577 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
578 int data_dir, int bidi)
579{
580 struct se_cmd *se_cmd = &cmd->se_cmd;
581 struct se_session *se_sess;
582 struct qla_tgt_sess *sess;
583 int flags = TARGET_SCF_ACK_KREF;
584
585 if (bidi)
586 flags |= TARGET_SCF_BIDI_OP;
587
588 sess = cmd->sess;
589 if (!sess) {
590 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
591 return -EINVAL;
592 }
593
594 se_sess = sess->se_sess;
595 if (!se_sess) {
596 pr_err("Unable to locate active struct se_session\n");
597 return -EINVAL;
598 }
599
600 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
601 cmd->unpacked_lun, data_length, fcp_task_attr,
602 data_dir, flags);
603 return 0;
604}
605
43381ce8 606static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
75f8c1f6
NB		 607{
608 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
75f8c1f6 609
75f8c1f6
NB		 610 /*
611 * Ensure that the complete FCP WRITE payload has been received.
612 * Otherwise return an exception via CHECK_CONDITION status.
613 */
614 if (!cmd->write_data_transferred) {
615 /*
616 * Check if se_cmd has already been aborted via LUN_RESET, and
617 * waiting upon completion in tcm_qla2xxx_write_pending_status()
618 */
43381ce8
CH		 619 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
620 complete(&cmd->se_cmd.t_transport_stop_comp);
621 return;
75f8c1f6 622 }
75f8c1f6 623
43381ce8
CH		 624 cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
625 transport_generic_request_failure(&cmd->se_cmd);
626 return;
75f8c1f6 627 }
43381ce8
CH		 628
629 return target_execute_cmd(&cmd->se_cmd);
630}
631
632/*
633 * Called from qla_target.c:qlt_do_ctio_completion()
634 */
635static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
636{
637 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
638 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
75f8c1f6
NB		 639}
640
641/*
642 * Called from qla_target.c:qlt_issue_task_mgmt()
643 */
9389c3c9
RD		 644static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
645 uint8_t tmr_func, uint32_t tag)
75f8c1f6
NB		 646{
647 struct qla_tgt_sess *sess = mcmd->sess;
648 struct se_cmd *se_cmd = &mcmd->se_cmd;
649
650 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
651 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
652}
653
654static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
655{
656 struct qla_tgt_cmd *cmd = container_of(se_cmd,
657 struct qla_tgt_cmd, se_cmd);
658
659 cmd->bufflen = se_cmd->data_length;
660 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
661 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
662
663 cmd->sg_cnt = se_cmd->t_data_nents;
664 cmd->sg = se_cmd->t_data_sg;
665 cmd->offset = 0;
666
667 /*
668 * Now queue completed DATA_IN the qla2xxx LLD and response ring
669 */
670 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
671 se_cmd->scsi_status);
672}
673
674static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
675{
676 struct qla_tgt_cmd *cmd = container_of(se_cmd,
677 struct qla_tgt_cmd, se_cmd);
678 int xmit_type = QLA_TGT_XMIT_STATUS;
679
680 cmd->bufflen = se_cmd->data_length;
681 cmd->sg = NULL;
682 cmd->sg_cnt = 0;
683 cmd->offset = 0;
684 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
685 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
686
687 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
688 /*
689 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
690 * for qla_tgt_xmit_response LLD code
691 */
692 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
693 se_cmd->residual_count = se_cmd->data_length;
694
695 cmd->bufflen = 0;
696 }
697 /*
698 * Now queue status response to qla2xxx LLD code and response ring
699 */
700 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
701}
702
703static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
704{
705 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
706 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
707 struct qla_tgt_mgmt_cmd, se_cmd);
708
709 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
710 mcmd, se_tmr->function, se_tmr->response);
711 /*
712 * Do translation between TCM TM response codes and
713 * QLA2xxx FC TM response codes.
714 */
715 switch (se_tmr->response) {
716 case TMR_FUNCTION_COMPLETE:
717 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
718 break;
719 case TMR_TASK_DOES_NOT_EXIST:
720 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
721 break;
722 case TMR_FUNCTION_REJECTED:
723 mcmd->fc_tm_rsp = FC_TM_REJECT;
724 break;
725 case TMR_LUN_DOES_NOT_EXIST:
726 default:
727 mcmd->fc_tm_rsp = FC_TM_FAILED;
728 break;
729 }
730 /*
731 * Queue the TM response to QLA2xxx LLD to build a
732 * CTIO response packet.
733 */
734 qlt_xmit_tm_rsp(mcmd);
735
736 return 0;
737}
738
739static u16 tcm_qla2xxx_get_fabric_sense_len(void)
740{
741 return 0;
742}
743
744static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
745 u32 sense_length)
746{
747 return 0;
748}
749
750/* Local pointer to allocated TCM configfs fabric module */
751struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
752struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
753
f2d5d9b9
NB		 754static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
755 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
75f8c1f6
NB		 756/*
757 * Expected to be called with struct qla_hw_data->hardware_lock held
758 */
759static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
760{
761 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
762 struct se_portal_group *se_tpg = se_nacl->se_tpg;
763 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
764 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
765 struct tcm_qla2xxx_lport, lport_wwn);
766 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
767 struct tcm_qla2xxx_nacl, se_node_acl);
768 void *node;
769
770 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
771
772 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
773 WARN_ON(node && (node != se_nacl));
774
775 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
776 se_nacl, nacl->nport_wwnn, nacl->nport_id);
f2d5d9b9
NB		 777 /*
778 * Now clear the se_nacl and session pointers from our HW lport lookup
779 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
780 *
781 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
782 * target_wait_for_sess_cmds() before the session waits for outstanding
783 * I/O to complete, to avoid a race between session shutdown execution
784 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
785 */
786 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
75f8c1f6
NB		 787}
788
aaf68b75
JE		 789static void tcm_qla2xxx_release_session(struct kref *kref)
790{
791 struct se_session *se_sess = container_of(kref,
792 struct se_session, sess_kref);
793
794 qlt_unreg_sess(se_sess->fabric_sess_ptr);
795}
796
797static void tcm_qla2xxx_put_session(struct se_session *se_sess)
798{
799 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
800 struct qla_hw_data *ha = sess->vha->hw;
801 unsigned long flags;
802
803 spin_lock_irqsave(&ha->hardware_lock, flags);
804 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
805 spin_unlock_irqrestore(&ha->hardware_lock, flags);
806}
807
75f8c1f6
NB		 808static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
809{
aaf68b75 810 tcm_qla2xxx_put_session(sess->se_sess);
75f8c1f6
NB		 811}
812
813static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
814{
815 tcm_qla2xxx_shutdown_session(sess->se_sess);
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
950static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
951 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
952 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
953 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
954 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
955 NULL,
956};
957
958/* End items for tcm_qla2xxx_tpg_attrib_cit */
959
960static ssize_t tcm_qla2xxx_tpg_show_enable(
961 struct se_portal_group *se_tpg,
962 char *page)
963{
964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
965 struct tcm_qla2xxx_tpg, se_tpg);
966
967 return snprintf(page, PAGE_SIZE, "%d\n",
968 atomic_read(&tpg->lport_tpg_enabled));
969}
970
971static ssize_t tcm_qla2xxx_tpg_store_enable(
972 struct se_portal_group *se_tpg,
973 const char *page,
974 size_t count)
975{
976 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
977 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
978 struct tcm_qla2xxx_lport, lport_wwn);
979 struct scsi_qla_host *vha = lport->qla_vha;
980 struct qla_hw_data *ha = vha->hw;
981 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
982 struct tcm_qla2xxx_tpg, se_tpg);
983 unsigned long op;
984 int rc;
985
986 rc = kstrtoul(page, 0, &op);
987 if (rc < 0) {
988 pr_err("kstrtoul() returned %d\n", rc);
989 return -EINVAL;
990 }
991 if ((op != 1) && (op != 0)) {
992 pr_err("Illegal value for tpg_enable: %lu\n", op);
993 return -EINVAL;
994 }
995
996 if (op) {
997 atomic_set(&tpg->lport_tpg_enabled, 1);
998 qlt_enable_vha(vha);
999 } else {
1000 if (!ha->tgt.qla_tgt) {
1001 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1002 return -ENODEV;
1003 }
1004 atomic_set(&tpg->lport_tpg_enabled, 0);
1005 qlt_stop_phase1(ha->tgt.qla_tgt);
1006 }
1007
1008 return count;
1009}
1010
1011TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1012
1013static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1014 &tcm_qla2xxx_tpg_enable.attr,
1015 NULL,
1016};
1017
1018static struct se_portal_group *tcm_qla2xxx_make_tpg(
1019 struct se_wwn *wwn,
1020 struct config_group *group,
1021 const char *name)
1022{
1023 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1024 struct tcm_qla2xxx_lport, lport_wwn);
1025 struct tcm_qla2xxx_tpg *tpg;
1026 unsigned long tpgt;
1027 int ret;
1028
1029 if (strstr(name, "tpgt_") != name)
1030 return ERR_PTR(-EINVAL);
1031 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1032 return ERR_PTR(-EINVAL);
1033
1034 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1035 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1036 return ERR_PTR(-ENOSYS);
1037 }
1038
1039 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1040 if (!tpg) {
1041 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1042 return ERR_PTR(-ENOMEM);
1043 }
1044 tpg->lport = lport;
1045 tpg->lport_tpgt = tpgt;
1046 /*
1047 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1048 * NodeACLs
1049 */
1050 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1051 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1052 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1053
1054 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1055 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1056 if (ret < 0) {
1057 kfree(tpg);
1058 return NULL;
1059 }
1060 /*
1061 * Setup local TPG=1 pointer for non NPIV mode.
1062 */
1063 if (lport->qla_npiv_vp == NULL)
1064 lport->tpg_1 = tpg;
1065
1066 return &tpg->se_tpg;
1067}
1068
1069static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1070{
1071 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1072 struct tcm_qla2xxx_tpg, se_tpg);
1073 struct tcm_qla2xxx_lport *lport = tpg->lport;
1074 struct scsi_qla_host *vha = lport->qla_vha;
1075 struct qla_hw_data *ha = vha->hw;
1076 /*
1077 * Call into qla2x_target.c LLD logic to shutdown the active
1078 * FC Nexuses and disable target mode operation for this qla_hw_data
1079 */
1080 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1081 qlt_stop_phase1(ha->tgt.qla_tgt);
1082
1083 core_tpg_deregister(se_tpg);
1084 /*
1085 * Clear local TPG=1 pointer for non NPIV mode.
1086 */
1087 if (lport->qla_npiv_vp == NULL)
1088 lport->tpg_1 = NULL;
1089
1090 kfree(tpg);
1091}
1092
1093static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1094 struct se_wwn *wwn,
1095 struct config_group *group,
1096 const char *name)
1097{
1098 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1099 struct tcm_qla2xxx_lport, lport_wwn);
1100 struct tcm_qla2xxx_tpg *tpg;
1101 unsigned long tpgt;
1102 int ret;
1103
1104 if (strstr(name, "tpgt_") != name)
1105 return ERR_PTR(-EINVAL);
1106 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1107 return ERR_PTR(-EINVAL);
1108
1109 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1110 if (!tpg) {
1111 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1112 return ERR_PTR(-ENOMEM);
1113 }
1114 tpg->lport = lport;
1115 tpg->lport_tpgt = tpgt;
1116
1117 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1118 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1119 if (ret < 0) {
1120 kfree(tpg);
1121 return NULL;
1122 }
1123 return &tpg->se_tpg;
1124}
1125
1126/*
1127 * Expected to be called with struct qla_hw_data->hardware_lock held
1128 */
1129static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1130 scsi_qla_host_t *vha,
1131 const uint8_t *s_id)
1132{
1133 struct qla_hw_data *ha = vha->hw;
1134 struct tcm_qla2xxx_lport *lport;
1135 struct se_node_acl *se_nacl;
1136 struct tcm_qla2xxx_nacl *nacl;
1137 u32 key;
1138
1139 lport = ha->tgt.target_lport_ptr;
1140 if (!lport) {
1141 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1142 dump_stack();
1143 return NULL;
1144 }
1145
1146 key = (((unsigned long)s_id[0] << 16) |
1147 ((unsigned long)s_id[1] << 8) |
1148 (unsigned long)s_id[2]);
1149 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1150
1151 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1152 if (!se_nacl) {
1153 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1154 return NULL;
1155 }
1156 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1157 se_nacl, se_nacl->initiatorname);
1158
1159 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1160 if (!nacl->qla_tgt_sess) {
1161 pr_err("Unable to locate struct qla_tgt_sess\n");
1162 return NULL;
1163 }
1164
1165 return nacl->qla_tgt_sess;
1166}
1167
1168/*
1169 * Expected to be called with struct qla_hw_data->hardware_lock held
1170 */
1171static void tcm_qla2xxx_set_sess_by_s_id(
1172 struct tcm_qla2xxx_lport *lport,
1173 struct se_node_acl *new_se_nacl,
1174 struct tcm_qla2xxx_nacl *nacl,
1175 struct se_session *se_sess,
1176 struct qla_tgt_sess *qla_tgt_sess,
1177 uint8_t *s_id)
1178{
1179 u32 key;
1180 void *slot;
1181 int rc;
1182
1183 key = (((unsigned long)s_id[0] << 16) |
1184 ((unsigned long)s_id[1] << 8) |
1185 (unsigned long)s_id[2]);
1186 pr_debug("set_sess_by_s_id: %06x\n", key);
1187
1188 slot = btree_lookup32(&lport->lport_fcport_map, key);
1189 if (!slot) {
1190 if (new_se_nacl) {
1191 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1192 nacl->nport_id = key;
1193 rc = btree_insert32(&lport->lport_fcport_map, key,
1194 new_se_nacl, GFP_ATOMIC);
1195 if (rc)
1196 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1197 (int)key);
1198 } else {
1199 pr_debug("Wiping nonexisting fc_port entry\n");
1200 }
1201
1202 qla_tgt_sess->se_sess = se_sess;
1203 nacl->qla_tgt_sess = qla_tgt_sess;
1204 return;
1205 }
1206
1207 if (nacl->qla_tgt_sess) {
1208 if (new_se_nacl == NULL) {
1209 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1210 btree_remove32(&lport->lport_fcport_map, key);
1211 nacl->qla_tgt_sess = NULL;
1212 return;
1213 }
1214 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1215 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1216 qla_tgt_sess->se_sess = se_sess;
1217 nacl->qla_tgt_sess = qla_tgt_sess;
1218 return;
1219 }
1220
1221 if (new_se_nacl == NULL) {
1222 pr_debug("Clearing existing fc_port entry\n");
1223 btree_remove32(&lport->lport_fcport_map, key);
1224 return;
1225 }
1226
1227 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\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
1232 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1233 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1234}
1235
1236/*
1237 * Expected to be called with struct qla_hw_data->hardware_lock held
1238 */
1239static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1240 scsi_qla_host_t *vha,
1241 const uint16_t loop_id)
1242{
1243 struct qla_hw_data *ha = vha->hw;
1244 struct tcm_qla2xxx_lport *lport;
1245 struct se_node_acl *se_nacl;
1246 struct tcm_qla2xxx_nacl *nacl;
1247 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1248
1249 lport = ha->tgt.target_lport_ptr;
1250 if (!lport) {
1251 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1252 dump_stack();
1253 return NULL;
1254 }
1255
1256 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1257
1258 fc_loopid = lport->lport_loopid_map + loop_id;
1259 se_nacl = fc_loopid->se_nacl;
1260 if (!se_nacl) {
1261 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1262 loop_id);
1263 return NULL;
1264 }
1265
1266 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1267
1268 if (!nacl->qla_tgt_sess) {
1269 pr_err("Unable to locate struct qla_tgt_sess\n");
1270 return NULL;
1271 }
1272
1273 return nacl->qla_tgt_sess;
1274}
1275
1276/*
1277 * Expected to be called with struct qla_hw_data->hardware_lock held
1278 */
1279static void tcm_qla2xxx_set_sess_by_loop_id(
1280 struct tcm_qla2xxx_lport *lport,
1281 struct se_node_acl *new_se_nacl,
1282 struct tcm_qla2xxx_nacl *nacl,
1283 struct se_session *se_sess,
1284 struct qla_tgt_sess *qla_tgt_sess,
1285 uint16_t loop_id)
1286{
1287 struct se_node_acl *saved_nacl;
1288 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1289
1290 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1291
1292 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1293 lport->lport_loopid_map)[loop_id];
1294
1295 saved_nacl = fc_loopid->se_nacl;
1296 if (!saved_nacl) {
1297 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1298 fc_loopid->se_nacl = new_se_nacl;
1299 if (qla_tgt_sess->se_sess != se_sess)
1300 qla_tgt_sess->se_sess = se_sess;
1301 if (nacl->qla_tgt_sess != qla_tgt_sess)
1302 nacl->qla_tgt_sess = qla_tgt_sess;
1303 return;
1304 }
1305
1306 if (nacl->qla_tgt_sess) {
1307 if (new_se_nacl == NULL) {
1308 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1309 fc_loopid->se_nacl = NULL;
1310 nacl->qla_tgt_sess = NULL;
1311 return;
1312 }
1313
1314 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1315 fc_loopid->se_nacl = new_se_nacl;
1316 if (qla_tgt_sess->se_sess != se_sess)
1317 qla_tgt_sess->se_sess = se_sess;
1318 if (nacl->qla_tgt_sess != qla_tgt_sess)
1319 nacl->qla_tgt_sess = qla_tgt_sess;
1320 return;
1321 }
1322
1323 if (new_se_nacl == NULL) {
1324 pr_debug("Clearing fc_loopid->se_nacl\n");
1325 fc_loopid->se_nacl = NULL;
1326 return;
1327 }
1328
1329 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1330 fc_loopid->se_nacl = new_se_nacl;
1331 if (qla_tgt_sess->se_sess != se_sess)
1332 qla_tgt_sess->se_sess = se_sess;
1333 if (nacl->qla_tgt_sess != qla_tgt_sess)
1334 nacl->qla_tgt_sess = qla_tgt_sess;
1335
1336 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1337 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1338}
1339
f2d5d9b9
NB		 1340/*
1341 * Should always be called with qla_hw_data->hardware_lock held.
1342 */
1343static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1344 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1345{
1346 struct se_session *se_sess = sess->se_sess;
1347 unsigned char be_sid[3];
1348
1349 be_sid[0] = sess->s_id.b.domain;
1350 be_sid[1] = sess->s_id.b.area;
1351 be_sid[2] = sess->s_id.b.al_pa;
1352
1353 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1354 sess, be_sid);
1355 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1356 sess, sess->loop_id);
1357}
1358
75f8c1f6
NB		 1359static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1360{
1361 struct qla_tgt *tgt = sess->tgt;
1362 struct qla_hw_data *ha = tgt->ha;
1363 struct se_session *se_sess;
1364 struct se_node_acl *se_nacl;
1365 struct tcm_qla2xxx_lport *lport;
1366 struct tcm_qla2xxx_nacl *nacl;
75f8c1f6
NB		 1367
1368 BUG_ON(in_interrupt());
1369
1370 se_sess = sess->se_sess;
1371 if (!se_sess) {
1372 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1373 dump_stack();
1374 return;
1375 }
1376 se_nacl = se_sess->se_node_acl;
1377 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1378
1379 lport = ha->tgt.target_lport_ptr;
1380 if (!lport) {
1381 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1382 dump_stack();
1383 return;
1384 }
1385 target_wait_for_sess_cmds(se_sess, 0);
75f8c1f6
NB		 1386
1387 transport_deregister_session_configfs(sess->se_sess);
1388 transport_deregister_session(sess->se_sess);
1389}
1390
1391/*
1392 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1393 * to locate struct se_node_acl
1394 */
1395static int tcm_qla2xxx_check_initiator_node_acl(
1396 scsi_qla_host_t *vha,
1397 unsigned char *fc_wwpn,
1398 void *qla_tgt_sess,
1399 uint8_t *s_id,
1400 uint16_t loop_id)
1401{
1402 struct qla_hw_data *ha = vha->hw;
1403 struct tcm_qla2xxx_lport *lport;
1404 struct tcm_qla2xxx_tpg *tpg;
1405 struct tcm_qla2xxx_nacl *nacl;
1406 struct se_portal_group *se_tpg;
1407 struct se_node_acl *se_nacl;
1408 struct se_session *se_sess;
1409 struct qla_tgt_sess *sess = qla_tgt_sess;
1410 unsigned char port_name[36];
1411 unsigned long flags;
1412
1413 lport = ha->tgt.target_lport_ptr;
1414 if (!lport) {
1415 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1416 dump_stack();
1417 return -EINVAL;
1418 }
1419 /*
1420 * Locate the TPG=1 reference..
1421 */
1422 tpg = lport->tpg_1;
1423 if (!tpg) {
1424 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1425 return -EINVAL;
1426 }
1427 se_tpg = &tpg->se_tpg;
1428
1429 se_sess = transport_init_session();
1430 if (IS_ERR(se_sess)) {
1431 pr_err("Unable to initialize struct se_session\n");
1432 return PTR_ERR(se_sess);
1433 }
1434 /*
1435 * Format the FCP Initiator port_name into colon seperated values to
1436 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1437 */
1438 memset(&port_name, 0, 36);
1439 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1440 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1441 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1442 /*
1443 * Locate our struct se_node_acl either from an explict NodeACL created
1444 * via ConfigFS, or via running in TPG demo mode.
1445 */
1446 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1447 port_name);
1448 if (!se_sess->se_node_acl) {
1449 transport_free_session(se_sess);
1450 return -EINVAL;
1451 }
1452 se_nacl = se_sess->se_node_acl;
1453 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1454 /*
1455 * And now setup the new se_nacl and session pointers into our HW lport
1456 * mappings for fabric S_ID and LOOP_ID.
1457 */
1458 spin_lock_irqsave(&ha->hardware_lock, flags);
1459 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1460 qla_tgt_sess, s_id);
1461 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1462 qla_tgt_sess, loop_id);
1463 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1464 /*
1465 * Finally register the new FC Nexus with TCM
1466 */
1467 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1468
1469 return 0;
1470}
1471
1472/*
1473 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1474 */
1475static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1476 .handle_cmd = tcm_qla2xxx_handle_cmd,
1477 .handle_data = tcm_qla2xxx_handle_data,
1478 .handle_tmr = tcm_qla2xxx_handle_tmr,
1479 .free_cmd = tcm_qla2xxx_free_cmd,
1480 .free_mcmd = tcm_qla2xxx_free_mcmd,
1481 .free_session = tcm_qla2xxx_free_session,
1482 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1483 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1484 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1485 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1486 .put_sess = tcm_qla2xxx_put_sess,
1487 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1488};
1489
1490static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1491{
1492 int rc;
1493
1494 rc = btree_init32(&lport->lport_fcport_map);
1495 if (rc) {
1496 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1497 return rc;
1498 }
1499
1500 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1501 65536);
1502 if (!lport->lport_loopid_map) {
1503 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1504 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1505 btree_destroy32(&lport->lport_fcport_map);
1506 return -ENOMEM;
1507 }
1508 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1509 * 65536);
1510 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1511 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1512 return 0;
1513}
1514
1515static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1516{
1517 struct qla_hw_data *ha = vha->hw;
1518 struct tcm_qla2xxx_lport *lport;
1519 /*
1520 * Setup local pointer to vha, NPIV VP pointer (if present) and
1521 * vha->tcm_lport pointer
1522 */
1523 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1524 lport->qla_vha = vha;
1525
1526 return 0;
1527}
1528
1529static struct se_wwn *tcm_qla2xxx_make_lport(
1530 struct target_fabric_configfs *tf,
1531 struct config_group *group,
1532 const char *name)
1533{
1534 struct tcm_qla2xxx_lport *lport;
1535 u64 wwpn;
1536 int ret = -ENODEV;
1537
1538 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1539 return ERR_PTR(-EINVAL);
1540
1541 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1542 if (!lport) {
1543 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1544 return ERR_PTR(-ENOMEM);
1545 }
1546 lport->lport_wwpn = wwpn;
1547 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1548 wwpn);
1549
1550 ret = tcm_qla2xxx_init_lport(lport);
1551 if (ret != 0)
1552 goto out;
1553
1554 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1555 tcm_qla2xxx_lport_register_cb, lport);
1556 if (ret != 0)
1557 goto out_lport;
1558
1559 return &lport->lport_wwn;
1560out_lport:
1561 vfree(lport->lport_loopid_map);
1562 btree_destroy32(&lport->lport_fcport_map);
1563out:
1564 kfree(lport);
1565 return ERR_PTR(ret);
1566}
1567
1568static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1569{
1570 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1571 struct tcm_qla2xxx_lport, lport_wwn);
1572 struct scsi_qla_host *vha = lport->qla_vha;
1573 struct qla_hw_data *ha = vha->hw;
1574 struct se_node_acl *node;
1575 u32 key = 0;
1576
1577 /*
1578 * Call into qla2x_target.c LLD logic to complete the
1579 * shutdown of struct qla_tgt after the call to
1580 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1581 */
1582 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1583 qlt_stop_phase2(ha->tgt.qla_tgt);
1584
1585 qlt_lport_deregister(vha);
1586
1587 vfree(lport->lport_loopid_map);
1588 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1589 btree_remove32(&lport->lport_fcport_map, key);
1590 btree_destroy32(&lport->lport_fcport_map);
1591 kfree(lport);
1592}
1593
1594static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1595 struct target_fabric_configfs *tf,
1596 struct config_group *group,
1597 const char *name)
1598{
1599 struct tcm_qla2xxx_lport *lport;
1600 u64 npiv_wwpn, npiv_wwnn;
1601 int ret;
1602
1603 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1604 &npiv_wwpn, &npiv_wwnn) < 0)
1605 return ERR_PTR(-EINVAL);
1606
1607 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1608 if (!lport) {
1609 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1610 return ERR_PTR(-ENOMEM);
1611 }
1612 lport->lport_npiv_wwpn = npiv_wwpn;
1613 lport->lport_npiv_wwnn = npiv_wwnn;
1614 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1615 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1616
1617/* FIXME: tcm_qla2xxx_npiv_make_lport */
1618 ret = -ENOSYS;
1619 if (ret != 0)
1620 goto out;
1621
1622 return &lport->lport_wwn;
1623out:
1624 kfree(lport);
1625 return ERR_PTR(ret);
1626}
1627
1628static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1629{
1630 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1631 struct tcm_qla2xxx_lport, lport_wwn);
1632 struct scsi_qla_host *vha = lport->qla_vha;
1633 struct Scsi_Host *sh = vha->host;
1634 /*
1635 * Notify libfc that we want to release the lport->npiv_vport
1636 */
1637 fc_vport_terminate(lport->npiv_vport);
1638
1639 scsi_host_put(sh);
1640 kfree(lport);
1641}
1642
1643
1644static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1645 struct target_fabric_configfs *tf,
1646 char *page)
1647{
1648 return sprintf(page,
1649 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1650 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1651 utsname()->machine);
1652}
1653
1654TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1655
1656static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1657 &tcm_qla2xxx_wwn_version.attr,
1658 NULL,
1659};
1660
1661static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1662 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1663 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1664 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1665 .tpg_get_tag = tcm_qla2xxx_get_tag,
1666 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1667 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1668 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1669 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1670 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1671 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1672 .tpg_check_demo_mode_write_protect =
1673 tcm_qla2xxx_check_demo_write_protect,
1674 .tpg_check_prod_mode_write_protect =
1675 tcm_qla2xxx_check_prod_write_protect,
1676 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1677 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1678 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1679 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
75f8c1f6
NB		 1680 .check_stop_free = tcm_qla2xxx_check_stop_free,
1681 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1682 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1683 .shutdown_session = tcm_qla2xxx_shutdown_session,
1684 .close_session = tcm_qla2xxx_close_session,
1685 .sess_get_index = tcm_qla2xxx_sess_get_index,
1686 .sess_get_initiator_sid = NULL,
1687 .write_pending = tcm_qla2xxx_write_pending,
1688 .write_pending_status = tcm_qla2xxx_write_pending_status,
1689 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1690 .get_task_tag = tcm_qla2xxx_get_task_tag,
1691 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1692 .queue_data_in = tcm_qla2xxx_queue_data_in,
1693 .queue_status = tcm_qla2xxx_queue_status,
1694 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1695 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1696 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1697 /*
1698 * Setup function pointers for generic logic in
1699 * target_core_fabric_configfs.c
1700 */
1701 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1702 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1703 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1704 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1705 .fabric_post_link = NULL,
1706 .fabric_pre_unlink = NULL,
1707 .fabric_make_np = NULL,
1708 .fabric_drop_np = NULL,
1709 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1710 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1711};
1712
1713static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1714 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1715 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1716 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1717 .tpg_get_tag = tcm_qla2xxx_get_tag,
1718 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1719 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1720 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1721 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1722 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1723 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1724 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1725 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1726 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1727 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1728 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1729 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1730 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1731 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1732 .shutdown_session = tcm_qla2xxx_shutdown_session,
1733 .close_session = tcm_qla2xxx_close_session,
1734 .sess_get_index = tcm_qla2xxx_sess_get_index,
1735 .sess_get_initiator_sid = NULL,
1736 .write_pending = tcm_qla2xxx_write_pending,
1737 .write_pending_status = tcm_qla2xxx_write_pending_status,
1738 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1739 .get_task_tag = tcm_qla2xxx_get_task_tag,
1740 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1741 .queue_data_in = tcm_qla2xxx_queue_data_in,
1742 .queue_status = tcm_qla2xxx_queue_status,
1743 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1744 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1745 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1746 /*
1747 * Setup function pointers for generic logic in
1748 * target_core_fabric_configfs.c
1749 */
1750 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1751 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1752 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1753 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1754 .fabric_post_link = NULL,
1755 .fabric_pre_unlink = NULL,
1756 .fabric_make_np = NULL,
1757 .fabric_drop_np = NULL,
1758 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1759 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1760};
1761
1762static int tcm_qla2xxx_register_configfs(void)
1763{
1764 struct target_fabric_configfs *fabric, *npiv_fabric;
1765 int ret;
1766
1767 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1768 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1769 utsname()->machine);
1770 /*
1771 * Register the top level struct config_item_type with TCM core
1772 */
1773 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1774 if (IS_ERR(fabric)) {
1775 pr_err("target_fabric_configfs_init() failed\n");
1776 return PTR_ERR(fabric);
1777 }
1778 /*
1779 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1780 */
1781 fabric->tf_ops = tcm_qla2xxx_ops;
1782 /*
1783 * Setup default attribute lists for various fabric->tf_cit_tmpl
1784 */
1785 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1786 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1787 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1788 tcm_qla2xxx_tpg_attrib_attrs;
1789 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1790 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1791 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1792 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1793 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1794 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1795 /*
1796 * Register the fabric for use within TCM
1797 */
1798 ret = target_fabric_configfs_register(fabric);
1799 if (ret < 0) {
1800 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1801 return ret;
1802 }
1803 /*
1804 * Setup our local pointer to *fabric
1805 */
1806 tcm_qla2xxx_fabric_configfs = fabric;
1807 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1808
1809 /*
1810 * Register the top level struct config_item_type for NPIV with TCM core
1811 */
1812 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1813 if (IS_ERR(npiv_fabric)) {
1814 pr_err("target_fabric_configfs_init() failed\n");
1815 ret = PTR_ERR(npiv_fabric);
1816 goto out_fabric;
1817 }
1818 /*
1819 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1820 */
1821 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1822 /*
1823 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1824 */
1825 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1826 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1827 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1828 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1829 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1830 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1831 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1832 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1833 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1834 /*
1835 * Register the npiv_fabric for use within TCM
1836 */
1837 ret = target_fabric_configfs_register(npiv_fabric);
1838 if (ret < 0) {
1839 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1840 goto out_fabric;
1841 }
1842 /*
1843 * Setup our local pointer to *npiv_fabric
1844 */
1845 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1846 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1847
1848 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1849 WQ_MEM_RECLAIM, 0);
1850 if (!tcm_qla2xxx_free_wq) {
1851 ret = -ENOMEM;
1852 goto out_fabric_npiv;
1853 }
1854
1855 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1856 if (!tcm_qla2xxx_cmd_wq) {
1857 ret = -ENOMEM;
1858 goto out_free_wq;
1859 }
1860
1861 return 0;
1862
1863out_free_wq:
1864 destroy_workqueue(tcm_qla2xxx_free_wq);
1865out_fabric_npiv:
1866 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1867out_fabric:
1868 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1869 return ret;
1870}
1871
1872static void tcm_qla2xxx_deregister_configfs(void)
1873{
1874 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1875 destroy_workqueue(tcm_qla2xxx_free_wq);
1876
1877 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1878 tcm_qla2xxx_fabric_configfs = NULL;
1879 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1880
1881 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1882 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1883 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1884}
1885
1886static int __init tcm_qla2xxx_init(void)
1887{
1888 int ret;
1889
1890 ret = tcm_qla2xxx_register_configfs();
1891 if (ret < 0)
1892 return ret;
1893
1894 return 0;
1895}
1896
1897static void __exit tcm_qla2xxx_exit(void)
1898{
1899 tcm_qla2xxx_deregister_configfs();
1900}
1901
1902MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1903MODULE_LICENSE("GPL");
1904module_init(tcm_qla2xxx_init);
1905module_exit(tcm_qla2xxx_exit);
Linux 6.x block layer and io_uring tree(s)