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iscsi-target: Bump default TCP listen backlog to 256
[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
75f8c1f6
NB		 500static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
501{
502 struct qla_tgt_cmd *cmd = container_of(se_cmd,
503 struct qla_tgt_cmd, se_cmd);
504
505 cmd->bufflen = se_cmd->data_length;
b3faa2e8 506 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
75f8c1f6
NB		 507
508 cmd->sg_cnt = se_cmd->t_data_nents;
509 cmd->sg = se_cmd->t_data_sg;
510
511 /*
512 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
513 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
514 */
515 return qlt_rdy_to_xfer(cmd);
516}
517
518static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
519{
520 unsigned long flags;
521 /*
522 * Check for WRITE_PENDING status to determine if we need to wait for
523 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
524 */
525 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
526 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
527 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
528 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
529 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
530 3000);
531 return 0;
532 }
533 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
534
535 return 0;
536}
537
538static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
539{
540 return;
541}
542
543static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
544{
545 struct qla_tgt_cmd *cmd = container_of(se_cmd,
546 struct qla_tgt_cmd, se_cmd);
547
548 return cmd->tag;
549}
550
551static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
552{
553 return 0;
554}
555
556/*
557 * Called from process context in qla_target.c:qlt_do_work() code
558 */
559static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
560 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
561 int data_dir, int bidi)
562{
563 struct se_cmd *se_cmd = &cmd->se_cmd;
564 struct se_session *se_sess;
565 struct qla_tgt_sess *sess;
566 int flags = TARGET_SCF_ACK_KREF;
567
568 if (bidi)
569 flags |= TARGET_SCF_BIDI_OP;
570
571 sess = cmd->sess;
572 if (!sess) {
573 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
574 return -EINVAL;
575 }
576
577 se_sess = sess->se_sess;
578 if (!se_sess) {
579 pr_err("Unable to locate active struct se_session\n");
580 return -EINVAL;
581 }
582
d6dfc868 583 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
75f8c1f6
NB		 584 cmd->unpacked_lun, data_length, fcp_task_attr,
585 data_dir, flags);
75f8c1f6
NB		 586}
587
43381ce8 588static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
75f8c1f6
NB		 589{
590 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
75f8c1f6 591
75f8c1f6
NB		 592 /*
593 * Ensure that the complete FCP WRITE payload has been received.
594 * Otherwise return an exception via CHECK_CONDITION status.
595 */
596 if (!cmd->write_data_transferred) {
597 /*
598 * Check if se_cmd has already been aborted via LUN_RESET, and
599 * waiting upon completion in tcm_qla2xxx_write_pending_status()
600 */
43381ce8
CH		 601 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
602 complete(&cmd->se_cmd.t_transport_stop_comp);
603 return;
75f8c1f6 604 }
75f8c1f6 605
de103c93
CH		 606 transport_generic_request_failure(&cmd->se_cmd,
607 TCM_CHECK_CONDITION_ABORT_CMD);
43381ce8 608 return;
75f8c1f6 609 }
43381ce8
CH		 610
611 return target_execute_cmd(&cmd->se_cmd);
612}
613
614/*
615 * Called from qla_target.c:qlt_do_ctio_completion()
616 */
617static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
618{
619 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
620 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
75f8c1f6
NB		 621}
622
623/*
624 * Called from qla_target.c:qlt_issue_task_mgmt()
625 */
9389c3c9
RD		 626static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
627 uint8_t tmr_func, uint32_t tag)
75f8c1f6
NB		 628{
629 struct qla_tgt_sess *sess = mcmd->sess;
630 struct se_cmd *se_cmd = &mcmd->se_cmd;
631
632 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
633 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
634}
635
636static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
637{
638 struct qla_tgt_cmd *cmd = container_of(se_cmd,
639 struct qla_tgt_cmd, se_cmd);
640
641 cmd->bufflen = se_cmd->data_length;
b3faa2e8 642 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
75f8c1f6
NB		 643 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
644
645 cmd->sg_cnt = se_cmd->t_data_nents;
646 cmd->sg = se_cmd->t_data_sg;
647 cmd->offset = 0;
648
649 /*
650 * Now queue completed DATA_IN the qla2xxx LLD and response ring
651 */
652 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
653 se_cmd->scsi_status);
654}
655
656static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
657{
658 struct qla_tgt_cmd *cmd = container_of(se_cmd,
659 struct qla_tgt_cmd, se_cmd);
660 int xmit_type = QLA_TGT_XMIT_STATUS;
661
662 cmd->bufflen = se_cmd->data_length;
663 cmd->sg = NULL;
664 cmd->sg_cnt = 0;
665 cmd->offset = 0;
b3faa2e8 666 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
75f8c1f6
NB		 667 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
668
669 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
670 /*
671 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
672 * for qla_tgt_xmit_response LLD code
673 */
b5aff3d2
RD		 674 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
675 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
676 se_cmd->residual_count = 0;
677 }
75f8c1f6 678 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
b5aff3d2 679 se_cmd->residual_count += se_cmd->data_length;
75f8c1f6
NB		 680
681 cmd->bufflen = 0;
682 }
683 /*
684 * Now queue status response to qla2xxx LLD code and response ring
685 */
686 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
687}
688
b79fafac 689static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
75f8c1f6
NB		 690{
691 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
692 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
693 struct qla_tgt_mgmt_cmd, se_cmd);
694
695 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
696 mcmd, se_tmr->function, se_tmr->response);
697 /*
698 * Do translation between TCM TM response codes and
699 * QLA2xxx FC TM response codes.
700 */
701 switch (se_tmr->response) {
702 case TMR_FUNCTION_COMPLETE:
703 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
704 break;
705 case TMR_TASK_DOES_NOT_EXIST:
706 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
707 break;
708 case TMR_FUNCTION_REJECTED:
709 mcmd->fc_tm_rsp = FC_TM_REJECT;
710 break;
711 case TMR_LUN_DOES_NOT_EXIST:
712 default:
713 mcmd->fc_tm_rsp = FC_TM_FAILED;
714 break;
715 }
716 /*
717 * Queue the TM response to QLA2xxx LLD to build a
718 * CTIO response packet.
719 */
720 qlt_xmit_tm_rsp(mcmd);
75f8c1f6
NB		 721}
722
75f8c1f6
NB		 723/* Local pointer to allocated TCM configfs fabric module */
724struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
725struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
726
f2d5d9b9
NB		 727static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
728 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
75f8c1f6
NB		 729/*
730 * Expected to be called with struct qla_hw_data->hardware_lock held
731 */
732static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
733{
734 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
735 struct se_portal_group *se_tpg = se_nacl->se_tpg;
736 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
737 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
738 struct tcm_qla2xxx_lport, lport_wwn);
739 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
740 struct tcm_qla2xxx_nacl, se_node_acl);
741 void *node;
742
743 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
744
745 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
746 WARN_ON(node && (node != se_nacl));
747
748 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
749 se_nacl, nacl->nport_wwnn, nacl->nport_id);
f2d5d9b9
NB		 750 /*
751 * Now clear the se_nacl and session pointers from our HW lport lookup
752 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
753 *
754 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
755 * target_wait_for_sess_cmds() before the session waits for outstanding
756 * I/O to complete, to avoid a race between session shutdown execution
757 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
758 */
759 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
75f8c1f6
NB		 760}
761
aaf68b75
JE		 762static void tcm_qla2xxx_release_session(struct kref *kref)
763{
764 struct se_session *se_sess = container_of(kref,
765 struct se_session, sess_kref);
766
767 qlt_unreg_sess(se_sess->fabric_sess_ptr);
768}
769
770static void tcm_qla2xxx_put_session(struct se_session *se_sess)
771{
772 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
773 struct qla_hw_data *ha = sess->vha->hw;
774 unsigned long flags;
775
776 spin_lock_irqsave(&ha->hardware_lock, flags);
777 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
778 spin_unlock_irqrestore(&ha->hardware_lock, flags);
779}
780
75f8c1f6
NB		 781static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
782{
08234e3a
JE		 783 assert_spin_locked(&sess->vha->hw->hardware_lock);
784 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
75f8c1f6
NB		 785}
786
787static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
788{
08234e3a
JE		 789 assert_spin_locked(&sess->vha->hw->hardware_lock);
790 target_sess_cmd_list_set_waiting(sess->se_sess);
75f8c1f6
NB		 791}
792
793static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
794 struct se_portal_group *se_tpg,
795 struct config_group *group,
796 const char *name)
797{
75f8c1f6
NB		 798 struct se_node_acl *se_nacl, *se_nacl_new;
799 struct tcm_qla2xxx_nacl *nacl;
800 u64 wwnn;
801 u32 qla2xxx_nexus_depth;
75f8c1f6
NB		 802
803 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
804 return ERR_PTR(-EINVAL);
805
806 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
807 if (!se_nacl_new)
808 return ERR_PTR(-ENOMEM);
809/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
810 qla2xxx_nexus_depth = 1;
811
812 /*
813 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
814 * when converting a NodeACL from demo mode -> explict
815 */
816 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
817 name, qla2xxx_nexus_depth);
818 if (IS_ERR(se_nacl)) {
819 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
820 return se_nacl;
821 }
822 /*
823 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
824 */
825 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
826 nacl->nport_wwnn = wwnn;
827 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
75f8c1f6
NB		 828
829 return se_nacl;
830}
831
832static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
833{
834 struct se_portal_group *se_tpg = se_acl->se_tpg;
835 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
836 struct tcm_qla2xxx_nacl, se_node_acl);
837
838 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
839 kfree(nacl);
840}
841
842/* Start items for tcm_qla2xxx_tpg_attrib_cit */
843
844#define DEF_QLA_TPG_ATTRIB(name) \
845 \
846static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
847 struct se_portal_group *se_tpg, \
848 char *page) \
849{ \
850 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
851 struct tcm_qla2xxx_tpg, se_tpg); \
852 \
853 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
854} \
855 \
856static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
857 struct se_portal_group *se_tpg, \
858 const char *page, \
859 size_t count) \
860{ \
861 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
862 struct tcm_qla2xxx_tpg, se_tpg); \
863 unsigned long val; \
864 int ret; \
865 \
866 ret = kstrtoul(page, 0, &val); \
867 if (ret < 0) { \
868 pr_err("kstrtoul() failed with" \
869 " ret: %d\n", ret); \
870 return -EINVAL; \
871 } \
872 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
873 \
874 return (!ret) ? count : -EINVAL; \
875}
876
877#define DEF_QLA_TPG_ATTR_BOOL(_name) \
878 \
879static int tcm_qla2xxx_set_attrib_##_name( \
880 struct tcm_qla2xxx_tpg *tpg, \
881 unsigned long val) \
882{ \
883 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
884 \
885 if ((val != 0) && (val != 1)) { \
886 pr_err("Illegal boolean value %lu\n", val); \
887 return -EINVAL; \
888 } \
889 \
890 a->_name = val; \
891 return 0; \
892}
893
894#define QLA_TPG_ATTR(_name, _mode) \
895 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
896
897/*
898 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
899 */
900DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
901DEF_QLA_TPG_ATTRIB(generate_node_acls);
902QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
903
904/*
905 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
906 */
907DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
908DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
909QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
910
911/*
912 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
913 */
914DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
915DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
916QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
917
918/*
919 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
920 */
921DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
922DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
923QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
924
de04a8aa
AG		 925/*
926 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
927 */
928DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
929DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
930QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
931
75f8c1f6
NB		 932static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
933 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
934 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
935 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
936 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
de04a8aa 937 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
75f8c1f6
NB		 938 NULL,
939};
940
941/* End items for tcm_qla2xxx_tpg_attrib_cit */
942
943static ssize_t tcm_qla2xxx_tpg_show_enable(
944 struct se_portal_group *se_tpg,
945 char *page)
946{
947 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
948 struct tcm_qla2xxx_tpg, se_tpg);
949
950 return snprintf(page, PAGE_SIZE, "%d\n",
951 atomic_read(&tpg->lport_tpg_enabled));
952}
953
954static ssize_t tcm_qla2xxx_tpg_store_enable(
955 struct se_portal_group *se_tpg,
956 const char *page,
957 size_t count)
958{
959 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
960 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
961 struct tcm_qla2xxx_lport, lport_wwn);
962 struct scsi_qla_host *vha = lport->qla_vha;
963 struct qla_hw_data *ha = vha->hw;
964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
965 struct tcm_qla2xxx_tpg, se_tpg);
966 unsigned long op;
967 int rc;
968
969 rc = kstrtoul(page, 0, &op);
970 if (rc < 0) {
971 pr_err("kstrtoul() returned %d\n", rc);
972 return -EINVAL;
973 }
974 if ((op != 1) && (op != 0)) {
975 pr_err("Illegal value for tpg_enable: %lu\n", op);
976 return -EINVAL;
977 }
978
979 if (op) {
980 atomic_set(&tpg->lport_tpg_enabled, 1);
981 qlt_enable_vha(vha);
982 } else {
983 if (!ha->tgt.qla_tgt) {
984 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
985 return -ENODEV;
986 }
987 atomic_set(&tpg->lport_tpg_enabled, 0);
988 qlt_stop_phase1(ha->tgt.qla_tgt);
989 }
990
991 return count;
992}
993
994TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
995
996static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
997 &tcm_qla2xxx_tpg_enable.attr,
998 NULL,
999};
1000
1001static struct se_portal_group *tcm_qla2xxx_make_tpg(
1002 struct se_wwn *wwn,
1003 struct config_group *group,
1004 const char *name)
1005{
1006 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1007 struct tcm_qla2xxx_lport, lport_wwn);
1008 struct tcm_qla2xxx_tpg *tpg;
1009 unsigned long tpgt;
1010 int ret;
1011
1012 if (strstr(name, "tpgt_") != name)
1013 return ERR_PTR(-EINVAL);
1014 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1015 return ERR_PTR(-EINVAL);
1016
1017 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1018 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1019 return ERR_PTR(-ENOSYS);
1020 }
1021
1022 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1023 if (!tpg) {
1024 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1025 return ERR_PTR(-ENOMEM);
1026 }
1027 tpg->lport = lport;
1028 tpg->lport_tpgt = tpgt;
1029 /*
1030 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1031 * NodeACLs
1032 */
1033 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1034 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1035 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
de04a8aa 1036 QLA_TPG_ATTRIB(tpg)->demo_mode_login_only = 1;
75f8c1f6
NB		 1037
1038 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1039 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1040 if (ret < 0) {
1041 kfree(tpg);
1042 return NULL;
1043 }
1044 /*
1045 * Setup local TPG=1 pointer for non NPIV mode.
1046 */
1047 if (lport->qla_npiv_vp == NULL)
1048 lport->tpg_1 = tpg;
1049
1050 return &tpg->se_tpg;
1051}
1052
1053static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1054{
1055 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1056 struct tcm_qla2xxx_tpg, se_tpg);
1057 struct tcm_qla2xxx_lport *lport = tpg->lport;
1058 struct scsi_qla_host *vha = lport->qla_vha;
1059 struct qla_hw_data *ha = vha->hw;
1060 /*
1061 * Call into qla2x_target.c LLD logic to shutdown the active
1062 * FC Nexuses and disable target mode operation for this qla_hw_data
1063 */
1064 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1065 qlt_stop_phase1(ha->tgt.qla_tgt);
1066
1067 core_tpg_deregister(se_tpg);
1068 /*
1069 * Clear local TPG=1 pointer for non NPIV mode.
1070 */
1071 if (lport->qla_npiv_vp == NULL)
1072 lport->tpg_1 = NULL;
1073
1074 kfree(tpg);
1075}
1076
1077static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1078 struct se_wwn *wwn,
1079 struct config_group *group,
1080 const char *name)
1081{
1082 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1083 struct tcm_qla2xxx_lport, lport_wwn);
1084 struct tcm_qla2xxx_tpg *tpg;
1085 unsigned long tpgt;
1086 int ret;
1087
1088 if (strstr(name, "tpgt_") != name)
1089 return ERR_PTR(-EINVAL);
1090 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1091 return ERR_PTR(-EINVAL);
1092
1093 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1094 if (!tpg) {
1095 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1096 return ERR_PTR(-ENOMEM);
1097 }
1098 tpg->lport = lport;
1099 tpg->lport_tpgt = tpgt;
1100
1101 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1102 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1103 if (ret < 0) {
1104 kfree(tpg);
1105 return NULL;
1106 }
1107 return &tpg->se_tpg;
1108}
1109
1110/*
1111 * Expected to be called with struct qla_hw_data->hardware_lock held
1112 */
1113static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1114 scsi_qla_host_t *vha,
1115 const uint8_t *s_id)
1116{
1117 struct qla_hw_data *ha = vha->hw;
1118 struct tcm_qla2xxx_lport *lport;
1119 struct se_node_acl *se_nacl;
1120 struct tcm_qla2xxx_nacl *nacl;
1121 u32 key;
1122
1123 lport = ha->tgt.target_lport_ptr;
1124 if (!lport) {
1125 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1126 dump_stack();
1127 return NULL;
1128 }
1129
1130 key = (((unsigned long)s_id[0] << 16) |
1131 ((unsigned long)s_id[1] << 8) |
1132 (unsigned long)s_id[2]);
1133 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1134
1135 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1136 if (!se_nacl) {
1137 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1138 return NULL;
1139 }
1140 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1141 se_nacl, se_nacl->initiatorname);
1142
1143 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1144 if (!nacl->qla_tgt_sess) {
1145 pr_err("Unable to locate struct qla_tgt_sess\n");
1146 return NULL;
1147 }
1148
1149 return nacl->qla_tgt_sess;
1150}
1151
1152/*
1153 * Expected to be called with struct qla_hw_data->hardware_lock held
1154 */
1155static void tcm_qla2xxx_set_sess_by_s_id(
1156 struct tcm_qla2xxx_lport *lport,
1157 struct se_node_acl *new_se_nacl,
1158 struct tcm_qla2xxx_nacl *nacl,
1159 struct se_session *se_sess,
1160 struct qla_tgt_sess *qla_tgt_sess,
1161 uint8_t *s_id)
1162{
1163 u32 key;
1164 void *slot;
1165 int rc;
1166
1167 key = (((unsigned long)s_id[0] << 16) |
1168 ((unsigned long)s_id[1] << 8) |
1169 (unsigned long)s_id[2]);
1170 pr_debug("set_sess_by_s_id: %06x\n", key);
1171
1172 slot = btree_lookup32(&lport->lport_fcport_map, key);
1173 if (!slot) {
1174 if (new_se_nacl) {
1175 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1176 nacl->nport_id = key;
1177 rc = btree_insert32(&lport->lport_fcport_map, key,
1178 new_se_nacl, GFP_ATOMIC);
1179 if (rc)
1180 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1181 (int)key);
1182 } else {
1183 pr_debug("Wiping nonexisting fc_port entry\n");
1184 }
1185
1186 qla_tgt_sess->se_sess = se_sess;
1187 nacl->qla_tgt_sess = qla_tgt_sess;
1188 return;
1189 }
1190
1191 if (nacl->qla_tgt_sess) {
1192 if (new_se_nacl == NULL) {
1193 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1194 btree_remove32(&lport->lport_fcport_map, key);
1195 nacl->qla_tgt_sess = NULL;
1196 return;
1197 }
1198 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1199 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1200 qla_tgt_sess->se_sess = se_sess;
1201 nacl->qla_tgt_sess = qla_tgt_sess;
1202 return;
1203 }
1204
1205 if (new_se_nacl == NULL) {
1206 pr_debug("Clearing existing fc_port entry\n");
1207 btree_remove32(&lport->lport_fcport_map, key);
1208 return;
1209 }
1210
1211 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1212 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1213 qla_tgt_sess->se_sess = se_sess;
1214 nacl->qla_tgt_sess = qla_tgt_sess;
1215
1216 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1217 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1218}
1219
1220/*
1221 * Expected to be called with struct qla_hw_data->hardware_lock held
1222 */
1223static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1224 scsi_qla_host_t *vha,
1225 const uint16_t loop_id)
1226{
1227 struct qla_hw_data *ha = vha->hw;
1228 struct tcm_qla2xxx_lport *lport;
1229 struct se_node_acl *se_nacl;
1230 struct tcm_qla2xxx_nacl *nacl;
1231 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1232
1233 lport = ha->tgt.target_lport_ptr;
1234 if (!lport) {
1235 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1236 dump_stack();
1237 return NULL;
1238 }
1239
1240 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1241
1242 fc_loopid = lport->lport_loopid_map + loop_id;
1243 se_nacl = fc_loopid->se_nacl;
1244 if (!se_nacl) {
1245 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1246 loop_id);
1247 return NULL;
1248 }
1249
1250 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1251
1252 if (!nacl->qla_tgt_sess) {
1253 pr_err("Unable to locate struct qla_tgt_sess\n");
1254 return NULL;
1255 }
1256
1257 return nacl->qla_tgt_sess;
1258}
1259
1260/*
1261 * Expected to be called with struct qla_hw_data->hardware_lock held
1262 */
1263static void tcm_qla2xxx_set_sess_by_loop_id(
1264 struct tcm_qla2xxx_lport *lport,
1265 struct se_node_acl *new_se_nacl,
1266 struct tcm_qla2xxx_nacl *nacl,
1267 struct se_session *se_sess,
1268 struct qla_tgt_sess *qla_tgt_sess,
1269 uint16_t loop_id)
1270{
1271 struct se_node_acl *saved_nacl;
1272 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1273
1274 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1275
1276 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1277 lport->lport_loopid_map)[loop_id];
1278
1279 saved_nacl = fc_loopid->se_nacl;
1280 if (!saved_nacl) {
1281 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1282 fc_loopid->se_nacl = new_se_nacl;
1283 if (qla_tgt_sess->se_sess != se_sess)
1284 qla_tgt_sess->se_sess = se_sess;
1285 if (nacl->qla_tgt_sess != qla_tgt_sess)
1286 nacl->qla_tgt_sess = qla_tgt_sess;
1287 return;
1288 }
1289
1290 if (nacl->qla_tgt_sess) {
1291 if (new_se_nacl == NULL) {
1292 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1293 fc_loopid->se_nacl = NULL;
1294 nacl->qla_tgt_sess = NULL;
1295 return;
1296 }
1297
1298 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1299 fc_loopid->se_nacl = new_se_nacl;
1300 if (qla_tgt_sess->se_sess != se_sess)
1301 qla_tgt_sess->se_sess = se_sess;
1302 if (nacl->qla_tgt_sess != qla_tgt_sess)
1303 nacl->qla_tgt_sess = qla_tgt_sess;
1304 return;
1305 }
1306
1307 if (new_se_nacl == NULL) {
1308 pr_debug("Clearing fc_loopid->se_nacl\n");
1309 fc_loopid->se_nacl = NULL;
1310 return;
1311 }
1312
1313 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1314 fc_loopid->se_nacl = new_se_nacl;
1315 if (qla_tgt_sess->se_sess != se_sess)
1316 qla_tgt_sess->se_sess = se_sess;
1317 if (nacl->qla_tgt_sess != qla_tgt_sess)
1318 nacl->qla_tgt_sess = qla_tgt_sess;
1319
1320 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1321 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1322}
1323
f2d5d9b9
NB		 1324/*
1325 * Should always be called with qla_hw_data->hardware_lock held.
1326 */
1327static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1328 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1329{
1330 struct se_session *se_sess = sess->se_sess;
1331 unsigned char be_sid[3];
1332
1333 be_sid[0] = sess->s_id.b.domain;
1334 be_sid[1] = sess->s_id.b.area;
1335 be_sid[2] = sess->s_id.b.al_pa;
1336
1337 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1338 sess, be_sid);
1339 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1340 sess, sess->loop_id);
1341}
1342
75f8c1f6
NB		 1343static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1344{
1345 struct qla_tgt *tgt = sess->tgt;
1346 struct qla_hw_data *ha = tgt->ha;
1347 struct se_session *se_sess;
1348 struct se_node_acl *se_nacl;
1349 struct tcm_qla2xxx_lport *lport;
1350 struct tcm_qla2xxx_nacl *nacl;
75f8c1f6
NB		 1351
1352 BUG_ON(in_interrupt());
1353
1354 se_sess = sess->se_sess;
1355 if (!se_sess) {
1356 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1357 dump_stack();
1358 return;
1359 }
1360 se_nacl = se_sess->se_node_acl;
1361 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1362
1363 lport = ha->tgt.target_lport_ptr;
1364 if (!lport) {
1365 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1366 dump_stack();
1367 return;
1368 }
be646c2d 1369 target_wait_for_sess_cmds(se_sess);
75f8c1f6
NB		 1370
1371 transport_deregister_session_configfs(sess->se_sess);
1372 transport_deregister_session(sess->se_sess);
1373}
1374
1375/*
1376 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1377 * to locate struct se_node_acl
1378 */
1379static int tcm_qla2xxx_check_initiator_node_acl(
1380 scsi_qla_host_t *vha,
1381 unsigned char *fc_wwpn,
1382 void *qla_tgt_sess,
1383 uint8_t *s_id,
1384 uint16_t loop_id)
1385{
1386 struct qla_hw_data *ha = vha->hw;
1387 struct tcm_qla2xxx_lport *lport;
1388 struct tcm_qla2xxx_tpg *tpg;
1389 struct tcm_qla2xxx_nacl *nacl;
1390 struct se_portal_group *se_tpg;
1391 struct se_node_acl *se_nacl;
1392 struct se_session *se_sess;
1393 struct qla_tgt_sess *sess = qla_tgt_sess;
1394 unsigned char port_name[36];
1395 unsigned long flags;
1396
1397 lport = ha->tgt.target_lport_ptr;
1398 if (!lport) {
1399 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1400 dump_stack();
1401 return -EINVAL;
1402 }
1403 /*
1404 * Locate the TPG=1 reference..
1405 */
1406 tpg = lport->tpg_1;
1407 if (!tpg) {
1408 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1409 return -EINVAL;
1410 }
1411 se_tpg = &tpg->se_tpg;
1412
1413 se_sess = transport_init_session();
1414 if (IS_ERR(se_sess)) {
1415 pr_err("Unable to initialize struct se_session\n");
1416 return PTR_ERR(se_sess);
1417 }
1418 /*
1419 * Format the FCP Initiator port_name into colon seperated values to
1420 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1421 */
1422 memset(&port_name, 0, 36);
1423 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1424 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1425 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1426 /*
1427 * Locate our struct se_node_acl either from an explict NodeACL created
1428 * via ConfigFS, or via running in TPG demo mode.
1429 */
1430 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1431 port_name);
1432 if (!se_sess->se_node_acl) {
1433 transport_free_session(se_sess);
1434 return -EINVAL;
1435 }
1436 se_nacl = se_sess->se_node_acl;
1437 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1438 /*
1439 * And now setup the new se_nacl and session pointers into our HW lport
1440 * mappings for fabric S_ID and LOOP_ID.
1441 */
1442 spin_lock_irqsave(&ha->hardware_lock, flags);
1443 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1444 qla_tgt_sess, s_id);
1445 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1446 qla_tgt_sess, loop_id);
1447 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1448 /*
1449 * Finally register the new FC Nexus with TCM
1450 */
1451 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1452
1453 return 0;
1454}
1455
c8292d1d
RD		 1456static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1457 uint16_t loop_id, bool conf_compl_supported)
1458{
1459 struct qla_tgt *tgt = sess->tgt;
1460 struct qla_hw_data *ha = tgt->ha;
1461 struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
1462 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1463 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1464 struct tcm_qla2xxx_nacl, se_node_acl);
1465 u32 key;
1466
1467
1468 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1469 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",
1470 sess,
1471 sess->port_name[0], sess->port_name[1],
1472 sess->port_name[2], sess->port_name[3],
1473 sess->port_name[4], sess->port_name[5],
1474 sess->port_name[6], sess->port_name[7],
1475 sess->loop_id, loop_id,
1476 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
1477 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1478
1479 if (sess->loop_id != loop_id) {
1480 /*
1481 * Because we can shuffle loop IDs around and we
1482 * update different sessions non-atomically, we might
1483 * have overwritten this session's old loop ID
1484 * already, and we might end up overwriting some other
1485 * session that will be updated later. So we have to
1486 * be extra careful and we can't warn about those things...
1487 */
1488 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1489 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1490
1491 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1492
1493 sess->loop_id = loop_id;
1494 }
1495
1496 if (sess->s_id.b24 != s_id.b24) {
1497 key = (((u32) sess->s_id.b.domain << 16) |
1498 ((u32) sess->s_id.b.area << 8) |
1499 ((u32) sess->s_id.b.al_pa));
1500
1501 if (btree_lookup32(&lport->lport_fcport_map, key))
1502 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1503 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1504 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1505 else
1506 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1507 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1508
1509 key = (((u32) s_id.b.domain << 16) |
1510 ((u32) s_id.b.area << 8) |
1511 ((u32) s_id.b.al_pa));
1512
1513 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1514 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1515 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1516 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1517 } else {
1518 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1519 }
1520
1521 sess->s_id = s_id;
1522 nacl->nport_id = key;
1523 }
1524
1525 sess->conf_compl_supported = conf_compl_supported;
1526}
1527
75f8c1f6
NB		 1528/*
1529 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1530 */
1531static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1532 .handle_cmd = tcm_qla2xxx_handle_cmd,
1533 .handle_data = tcm_qla2xxx_handle_data,
1534 .handle_tmr = tcm_qla2xxx_handle_tmr,
1535 .free_cmd = tcm_qla2xxx_free_cmd,
1536 .free_mcmd = tcm_qla2xxx_free_mcmd,
1537 .free_session = tcm_qla2xxx_free_session,
c8292d1d 1538 .update_sess = tcm_qla2xxx_update_sess,
75f8c1f6
NB		 1539 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1540 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1541 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1542 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1543 .put_sess = tcm_qla2xxx_put_sess,
1544 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1545};
1546
1547static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1548{
1549 int rc;
1550
1551 rc = btree_init32(&lport->lport_fcport_map);
1552 if (rc) {
1553 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1554 return rc;
1555 }
1556
1557 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1558 65536);
1559 if (!lport->lport_loopid_map) {
1560 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1561 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1562 btree_destroy32(&lport->lport_fcport_map);
1563 return -ENOMEM;
1564 }
1565 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1566 * 65536);
1567 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1568 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1569 return 0;
1570}
1571
1572static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1573{
1574 struct qla_hw_data *ha = vha->hw;
1575 struct tcm_qla2xxx_lport *lport;
1576 /*
1577 * Setup local pointer to vha, NPIV VP pointer (if present) and
1578 * vha->tcm_lport pointer
1579 */
1580 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1581 lport->qla_vha = vha;
1582
1583 return 0;
1584}
1585
1586static struct se_wwn *tcm_qla2xxx_make_lport(
1587 struct target_fabric_configfs *tf,
1588 struct config_group *group,
1589 const char *name)
1590{
1591 struct tcm_qla2xxx_lport *lport;
1592 u64 wwpn;
1593 int ret = -ENODEV;
1594
1595 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1596 return ERR_PTR(-EINVAL);
1597
1598 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1599 if (!lport) {
1600 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1601 return ERR_PTR(-ENOMEM);
1602 }
1603 lport->lport_wwpn = wwpn;
1604 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1605 wwpn);
c046aa0f 1606 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
75f8c1f6
NB		 1607
1608 ret = tcm_qla2xxx_init_lport(lport);
1609 if (ret != 0)
1610 goto out;
1611
1612 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1613 tcm_qla2xxx_lport_register_cb, lport);
1614 if (ret != 0)
1615 goto out_lport;
1616
1617 return &lport->lport_wwn;
1618out_lport:
1619 vfree(lport->lport_loopid_map);
1620 btree_destroy32(&lport->lport_fcport_map);
1621out:
1622 kfree(lport);
1623 return ERR_PTR(ret);
1624}
1625
1626static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1627{
1628 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1629 struct tcm_qla2xxx_lport, lport_wwn);
1630 struct scsi_qla_host *vha = lport->qla_vha;
1631 struct qla_hw_data *ha = vha->hw;
1632 struct se_node_acl *node;
1633 u32 key = 0;
1634
1635 /*
1636 * Call into qla2x_target.c LLD logic to complete the
1637 * shutdown of struct qla_tgt after the call to
1638 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1639 */
1640 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1641 qlt_stop_phase2(ha->tgt.qla_tgt);
1642
1643 qlt_lport_deregister(vha);
1644
1645 vfree(lport->lport_loopid_map);
1646 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1647 btree_remove32(&lport->lport_fcport_map, key);
1648 btree_destroy32(&lport->lport_fcport_map);
1649 kfree(lport);
1650}
1651
1652static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1653 struct target_fabric_configfs *tf,
1654 struct config_group *group,
1655 const char *name)
1656{
1657 struct tcm_qla2xxx_lport *lport;
1658 u64 npiv_wwpn, npiv_wwnn;
1659 int ret;
1660
1661 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1662 &npiv_wwpn, &npiv_wwnn) < 0)
1663 return ERR_PTR(-EINVAL);
1664
1665 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1666 if (!lport) {
1667 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1668 return ERR_PTR(-ENOMEM);
1669 }
1670 lport->lport_npiv_wwpn = npiv_wwpn;
1671 lport->lport_npiv_wwnn = npiv_wwnn;
1672 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1673 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
c046aa0f 1674 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
75f8c1f6
NB		 1675
1676/* FIXME: tcm_qla2xxx_npiv_make_lport */
1677 ret = -ENOSYS;
1678 if (ret != 0)
1679 goto out;
1680
1681 return &lport->lport_wwn;
1682out:
1683 kfree(lport);
1684 return ERR_PTR(ret);
1685}
1686
1687static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1688{
1689 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1690 struct tcm_qla2xxx_lport, lport_wwn);
1691 struct scsi_qla_host *vha = lport->qla_vha;
1692 struct Scsi_Host *sh = vha->host;
1693 /*
1694 * Notify libfc that we want to release the lport->npiv_vport
1695 */
1696 fc_vport_terminate(lport->npiv_vport);
1697
1698 scsi_host_put(sh);
1699 kfree(lport);
1700}
1701
1702
1703static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1704 struct target_fabric_configfs *tf,
1705 char *page)
1706{
1707 return sprintf(page,
1708 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1709 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1710 utsname()->machine);
1711}
1712
1713TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1714
1715static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1716 &tcm_qla2xxx_wwn_version.attr,
1717 NULL,
1718};
1719
1720static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1721 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1722 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1723 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1724 .tpg_get_tag = tcm_qla2xxx_get_tag,
1725 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1726 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1727 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1728 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1729 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1730 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1731 .tpg_check_demo_mode_write_protect =
1732 tcm_qla2xxx_check_demo_write_protect,
1733 .tpg_check_prod_mode_write_protect =
1734 tcm_qla2xxx_check_prod_write_protect,
de04a8aa 1735 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
75f8c1f6
NB		 1736 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1737 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1738 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
75f8c1f6
NB		 1739 .check_stop_free = tcm_qla2xxx_check_stop_free,
1740 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1741 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1742 .shutdown_session = tcm_qla2xxx_shutdown_session,
1743 .close_session = tcm_qla2xxx_close_session,
1744 .sess_get_index = tcm_qla2xxx_sess_get_index,
1745 .sess_get_initiator_sid = NULL,
1746 .write_pending = tcm_qla2xxx_write_pending,
1747 .write_pending_status = tcm_qla2xxx_write_pending_status,
1748 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1749 .get_task_tag = tcm_qla2xxx_get_task_tag,
1750 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1751 .queue_data_in = tcm_qla2xxx_queue_data_in,
1752 .queue_status = tcm_qla2xxx_queue_status,
1753 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
75f8c1f6
NB		 1754 /*
1755 * Setup function pointers for generic logic in
1756 * target_core_fabric_configfs.c
1757 */
1758 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1759 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1760 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1761 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1762 .fabric_post_link = NULL,
1763 .fabric_pre_unlink = NULL,
1764 .fabric_make_np = NULL,
1765 .fabric_drop_np = NULL,
1766 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1767 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1768};
1769
1770static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1771 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1772 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1773 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1774 .tpg_get_tag = tcm_qla2xxx_get_tag,
1775 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1776 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1777 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1778 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1779 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1780 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1781 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1782 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
de04a8aa 1783 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
75f8c1f6
NB		 1784 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1785 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1786 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1787 .release_cmd = tcm_qla2xxx_release_cmd,
aaf68b75 1788 .put_session = tcm_qla2xxx_put_session,
75f8c1f6
NB		 1789 .shutdown_session = tcm_qla2xxx_shutdown_session,
1790 .close_session = tcm_qla2xxx_close_session,
1791 .sess_get_index = tcm_qla2xxx_sess_get_index,
1792 .sess_get_initiator_sid = NULL,
1793 .write_pending = tcm_qla2xxx_write_pending,
1794 .write_pending_status = tcm_qla2xxx_write_pending_status,
1795 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1796 .get_task_tag = tcm_qla2xxx_get_task_tag,
1797 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1798 .queue_data_in = tcm_qla2xxx_queue_data_in,
1799 .queue_status = tcm_qla2xxx_queue_status,
1800 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
75f8c1f6
NB		 1801 /*
1802 * Setup function pointers for generic logic in
1803 * target_core_fabric_configfs.c
1804 */
1805 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1806 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1807 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1808 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1809 .fabric_post_link = NULL,
1810 .fabric_pre_unlink = NULL,
1811 .fabric_make_np = NULL,
1812 .fabric_drop_np = NULL,
1813 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1814 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1815};
1816
1817static int tcm_qla2xxx_register_configfs(void)
1818{
1819 struct target_fabric_configfs *fabric, *npiv_fabric;
1820 int ret;
1821
1822 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1823 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1824 utsname()->machine);
1825 /*
1826 * Register the top level struct config_item_type with TCM core
1827 */
1828 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1829 if (IS_ERR(fabric)) {
1830 pr_err("target_fabric_configfs_init() failed\n");
1831 return PTR_ERR(fabric);
1832 }
1833 /*
1834 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1835 */
1836 fabric->tf_ops = tcm_qla2xxx_ops;
1837 /*
1838 * Setup default attribute lists for various fabric->tf_cit_tmpl
1839 */
1840 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1841 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1842 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1843 tcm_qla2xxx_tpg_attrib_attrs;
1844 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1845 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1846 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1847 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1848 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1849 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1850 /*
1851 * Register the fabric for use within TCM
1852 */
1853 ret = target_fabric_configfs_register(fabric);
1854 if (ret < 0) {
1855 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1856 return ret;
1857 }
1858 /*
1859 * Setup our local pointer to *fabric
1860 */
1861 tcm_qla2xxx_fabric_configfs = fabric;
1862 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1863
1864 /*
1865 * Register the top level struct config_item_type for NPIV with TCM core
1866 */
1867 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1868 if (IS_ERR(npiv_fabric)) {
1869 pr_err("target_fabric_configfs_init() failed\n");
1870 ret = PTR_ERR(npiv_fabric);
1871 goto out_fabric;
1872 }
1873 /*
1874 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1875 */
1876 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1877 /*
1878 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1879 */
1880 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1881 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1882 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1883 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1884 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1885 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1886 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1887 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1888 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1889 /*
1890 * Register the npiv_fabric for use within TCM
1891 */
1892 ret = target_fabric_configfs_register(npiv_fabric);
1893 if (ret < 0) {
1894 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1895 goto out_fabric;
1896 }
1897 /*
1898 * Setup our local pointer to *npiv_fabric
1899 */
1900 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1901 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1902
1903 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1904 WQ_MEM_RECLAIM, 0);
1905 if (!tcm_qla2xxx_free_wq) {
1906 ret = -ENOMEM;
1907 goto out_fabric_npiv;
1908 }
1909
1910 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1911 if (!tcm_qla2xxx_cmd_wq) {
1912 ret = -ENOMEM;
1913 goto out_free_wq;
1914 }
1915
1916 return 0;
1917
1918out_free_wq:
1919 destroy_workqueue(tcm_qla2xxx_free_wq);
1920out_fabric_npiv:
1921 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1922out_fabric:
1923 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1924 return ret;
1925}
1926
1927static void tcm_qla2xxx_deregister_configfs(void)
1928{
1929 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1930 destroy_workqueue(tcm_qla2xxx_free_wq);
1931
1932 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1933 tcm_qla2xxx_fabric_configfs = NULL;
1934 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1935
1936 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1937 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1938 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1939}
1940
1941static int __init tcm_qla2xxx_init(void)
1942{
1943 int ret;
1944
1945 ret = tcm_qla2xxx_register_configfs();
1946 if (ret < 0)
1947 return ret;
1948
1949 return 0;
1950}
1951
1952static void __exit tcm_qla2xxx_exit(void)
1953{
1954 tcm_qla2xxx_deregister_configfs();
1955}
1956
1957MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1958MODULE_LICENSE("GPL");
1959module_init(tcm_qla2xxx_init);
1960module_exit(tcm_qla2xxx_exit);
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