?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob75a141bbe74d178834a9f58c6fc723734e63758f
1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
4 *
5 * (c) Copyright 2010-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
8 *
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
11 *
12 * Copyright (c) 2010 Cisco Systems, Inc
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
24
25
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <generated/utsrelease.h>
29 #include <linux/utsname.h>
30 #include <linux/init.h>
31 #include <linux/list.h>
32 #include <linux/slab.h>
33 #include <linux/kthread.h>
34 #include <linux/types.h>
35 #include <linux/string.h>
36 #include <linux/configfs.h>
37 #include <linux/ctype.h>
38 #include <asm/unaligned.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_fabric.h>
45 #include <target/target_core_fabric_configfs.h>
46 #include <target/target_core_configfs.h>
47 #include <target/configfs_macros.h>
48
49 #include "qla_def.h"
50 #include "qla_target.h"
51 #include "tcm_qla2xxx.h"
52
53 struct workqueue_struct *tcm_qla2xxx_free_wq;
54 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
55
56 /*
57 * Parse WWN.
58 * If strict, we require lower-case hex and colon separators to be sure
59 * the name is the same as what would be generated by ft_format_wwn()
60 * so the name and wwn are mapped one-to-one.
61 */
62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
63 {
64 const char *cp;
65 char c;
66 u32 nibble;
67 u32 byte = 0;
68 u32 pos = 0;
69 u32 err;
70
71 *wwn = 0;
72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
73 c = *cp;
74 if (c == '\n' && cp[1] == '\0')
75 continue;
76 if (strict && pos++ == 2 && byte++ < 7) {
77 pos = 0;
78 if (c == ':')
79 continue;
80 err = 1;
81 goto fail;
82 }
83 if (c == '\0') {
84 err = 2;
85 if (strict && byte != 8)
86 goto fail;
87 return cp - name;
88 }
89 err = 3;
90 if (isdigit(c))
91 nibble = c - '0';
92 else if (isxdigit(c) && (islower(c) || !strict))
93 nibble = tolower(c) - 'a' + 10;
94 else
95 goto fail;
96 *wwn = (*wwn << 4) | nibble;
97 }
98 err = 4;
99 fail:
100 pr_debug("err %u len %zu pos %u byte %u\n",
101 err, cp - name, pos, byte);
102 return -1;
103 }
104
105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
106 {
107 u8 b[8];
108
109 put_unaligned_be64(wwn, b);
110 return snprintf(buf, len,
111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
113 }
114
115 static char *tcm_qla2xxx_get_fabric_name(void)
116 {
117 return "qla2xxx";
118 }
119
120 /*
121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
122 */
123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
124 {
125 unsigned int i, j;
126 u8 wwn[8];
127
128 memset(wwn, 0, sizeof(wwn));
129
130 /* Validate and store the new name */
131 for (i = 0, j = 0; i < 16; i++) {
132 int value;
133
134 value = hex_to_bin(*ns++);
135 if (value >= 0)
136 j = (j << 4) | value;
137 else
138 return -EINVAL;
139
140 if (i % 2) {
141 wwn[i/2] = j & 0xff;
142 j = 0;
143 }
144 }
145
146 *nm = wwn_to_u64(wwn);
147 return 0;
148 }
149
150 /*
151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
152 * store_fc_host_vport_create()
153 */
154 static int tcm_qla2xxx_npiv_parse_wwn(
155 const char *name,
156 size_t count,
157 u64 *wwpn,
158 u64 *wwnn)
159 {
160 unsigned int cnt = count;
161 int rc;
162
163 *wwpn = 0;
164 *wwnn = 0;
165
166 /* count may include a LF at end of string */
167 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
168 cnt--;
169
170 /* validate we have enough characters for WWPN */
171 if ((cnt != (16+1+16)) || (name[16] != ':'))
172 return -EINVAL;
173
174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
175 if (rc != 0)
176 return rc;
177
178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
179 if (rc != 0)
180 return rc;
181
182 return 0;
183 }
184
185 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
186 u64 wwpn, u64 wwnn)
187 {
188 u8 b[8], b2[8];
189
190 put_unaligned_be64(wwpn, b);
191 put_unaligned_be64(wwnn, b2);
192 return snprintf(buf, len,
193 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
194 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
195 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
196 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
197 }
198
199 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
200 {
201 return "qla2xxx_npiv";
202 }
203
204 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
205 {
206 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
207 struct tcm_qla2xxx_tpg, se_tpg);
208 struct tcm_qla2xxx_lport *lport = tpg->lport;
209 u8 proto_id;
210
211 switch (lport->lport_proto_id) {
212 case SCSI_PROTOCOL_FCP:
213 default:
214 proto_id = fc_get_fabric_proto_ident(se_tpg);
215 break;
216 }
217
218 return proto_id;
219 }
220
221 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
222 {
223 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
224 struct tcm_qla2xxx_tpg, se_tpg);
225 struct tcm_qla2xxx_lport *lport = tpg->lport;
226
227 return lport->lport_naa_name;
228 }
229
230 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
231 {
232 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
233 struct tcm_qla2xxx_tpg, se_tpg);
234 struct tcm_qla2xxx_lport *lport = tpg->lport;
235
236 return &lport->lport_npiv_name[0];
237 }
238
239 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
240 {
241 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
242 struct tcm_qla2xxx_tpg, se_tpg);
243 return tpg->lport_tpgt;
244 }
245
246 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
247 {
248 return 1;
249 }
250
251 static u32 tcm_qla2xxx_get_pr_transport_id(
252 struct se_portal_group *se_tpg,
253 struct se_node_acl *se_nacl,
254 struct t10_pr_registration *pr_reg,
255 int *format_code,
256 unsigned char *buf)
257 {
258 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
259 struct tcm_qla2xxx_tpg, se_tpg);
260 struct tcm_qla2xxx_lport *lport = tpg->lport;
261 int ret = 0;
262
263 switch (lport->lport_proto_id) {
264 case SCSI_PROTOCOL_FCP:
265 default:
266 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
267 format_code, buf);
268 break;
269 }
270
271 return ret;
272 }
273
274 static u32 tcm_qla2xxx_get_pr_transport_id_len(
275 struct se_portal_group *se_tpg,
276 struct se_node_acl *se_nacl,
277 struct t10_pr_registration *pr_reg,
278 int *format_code)
279 {
280 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
281 struct tcm_qla2xxx_tpg, se_tpg);
282 struct tcm_qla2xxx_lport *lport = tpg->lport;
283 int ret = 0;
284
285 switch (lport->lport_proto_id) {
286 case SCSI_PROTOCOL_FCP:
287 default:
288 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
289 format_code);
290 break;
291 }
292
293 return ret;
294 }
295
296 static char *tcm_qla2xxx_parse_pr_out_transport_id(
297 struct se_portal_group *se_tpg,
298 const char *buf,
299 u32 *out_tid_len,
300 char **port_nexus_ptr)
301 {
302 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
303 struct tcm_qla2xxx_tpg, se_tpg);
304 struct tcm_qla2xxx_lport *lport = tpg->lport;
305 char *tid = NULL;
306
307 switch (lport->lport_proto_id) {
308 case SCSI_PROTOCOL_FCP:
309 default:
310 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
311 port_nexus_ptr);
312 break;
313 }
314
315 return tid;
316 }
317
318 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
319 {
320 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
321 struct tcm_qla2xxx_tpg, se_tpg);
322
323 return tpg->tpg_attrib.generate_node_acls;
324 }
325
326 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
327 {
328 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
329 struct tcm_qla2xxx_tpg, se_tpg);
330
331 return tpg->tpg_attrib.cache_dynamic_acls;
332 }
333
334 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
335 {
336 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
337 struct tcm_qla2xxx_tpg, se_tpg);
338
339 return tpg->tpg_attrib.demo_mode_write_protect;
340 }
341
342 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
343 {
344 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
345 struct tcm_qla2xxx_tpg, se_tpg);
346
347 return tpg->tpg_attrib.prod_mode_write_protect;
348 }
349
350 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
351 {
352 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
353 struct tcm_qla2xxx_tpg, se_tpg);
354
355 return tpg->tpg_attrib.demo_mode_login_only;
356 }
357
358 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
359 struct se_portal_group *se_tpg)
360 {
361 struct tcm_qla2xxx_nacl *nacl;
362
363 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
364 if (!nacl) {
365 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
366 return NULL;
367 }
368
369 return &nacl->se_node_acl;
370 }
371
372 static void tcm_qla2xxx_release_fabric_acl(
373 struct se_portal_group *se_tpg,
374 struct se_node_acl *se_nacl)
375 {
376 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
377 struct tcm_qla2xxx_nacl, se_node_acl);
378 kfree(nacl);
379 }
380
381 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
382 {
383 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
384 struct tcm_qla2xxx_tpg, se_tpg);
385
386 return tpg->lport_tpgt;
387 }
388
389 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
390 {
391 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
392 struct qla_tgt_mgmt_cmd, free_work);
393
394 transport_generic_free_cmd(&mcmd->se_cmd, 0);
395 }
396
397 /*
398 * Called from qla_target_template->free_mcmd(), and will call
399 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
400 * release callback. qla_hw_data->hardware_lock is expected to be held
401 */
402 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
403 {
404 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
405 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
406 }
407
408 static void tcm_qla2xxx_complete_free(struct work_struct *work)
409 {
410 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
411
412 transport_generic_free_cmd(&cmd->se_cmd, 0);
413 }
414
415 /*
416 * Called from qla_target_template->free_cmd(), and will call
417 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
418 * release callback. qla_hw_data->hardware_lock is expected to be held
419 */
420 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
421 {
422 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
423 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
424 }
425
426 /*
427 * Called from struct target_core_fabric_ops->check_stop_free() context
428 */
429 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
430 {
431 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
432 }
433
434 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
435 * fabric descriptor @se_cmd command to release
436 */
437 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
438 {
439 struct qla_tgt_cmd *cmd;
440
441 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
442 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
443 struct qla_tgt_mgmt_cmd, se_cmd);
444 qlt_free_mcmd(mcmd);
445 return;
446 }
447
448 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
449 qlt_free_cmd(cmd);
450 }
451
452 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
453 {
454 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
455 struct scsi_qla_host *vha;
456 unsigned long flags;
457
458 BUG_ON(!sess);
459 vha = sess->vha;
460
461 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
462 target_sess_cmd_list_set_waiting(se_sess);
463 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
464
465 return 1;
466 }
467
468 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
469 {
470 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
471 struct scsi_qla_host *vha;
472 unsigned long flags;
473
474 BUG_ON(!sess);
475 vha = sess->vha;
476
477 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
478 qlt_unreg_sess(sess);
479 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
480 }
481
482 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
483 {
484 return 0;
485 }
486
487 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
488 {
489 struct qla_tgt_cmd *cmd = container_of(se_cmd,
490 struct qla_tgt_cmd, se_cmd);
491
492 cmd->bufflen = se_cmd->data_length;
493 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
494
495 cmd->sg_cnt = se_cmd->t_data_nents;
496 cmd->sg = se_cmd->t_data_sg;
497
498 /*
499 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
500 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
501 */
502 return qlt_rdy_to_xfer(cmd);
503 }
504
505 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
506 {
507 unsigned long flags;
508 /*
509 * Check for WRITE_PENDING status to determine if we need to wait for
510 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
511 */
512 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
513 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
514 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
515 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
516 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
517 3000);
518 return 0;
519 }
520 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
521
522 return 0;
523 }
524
525 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
526 {
527 return;
528 }
529
530 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
531 {
532 struct qla_tgt_cmd *cmd = container_of(se_cmd,
533 struct qla_tgt_cmd, se_cmd);
534
535 return cmd->tag;
536 }
537
538 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
539 {
540 return 0;
541 }
542
543 /*
544 * Called from process context in qla_target.c:qlt_do_work() code
545 */
546 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
547 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
548 int data_dir, int bidi)
549 {
550 struct se_cmd *se_cmd = &cmd->se_cmd;
551 struct se_session *se_sess;
552 struct qla_tgt_sess *sess;
553 int flags = TARGET_SCF_ACK_KREF;
554
555 if (bidi)
556 flags |= TARGET_SCF_BIDI_OP;
557
558 sess = cmd->sess;
559 if (!sess) {
560 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
561 return -EINVAL;
562 }
563
564 se_sess = sess->se_sess;
565 if (!se_sess) {
566 pr_err("Unable to locate active struct se_session\n");
567 return -EINVAL;
568 }
569
570 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
571 cmd->unpacked_lun, data_length, fcp_task_attr,
572 data_dir, flags);
573 }
574
575 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
576 {
577 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
578
579 /*
580 * Ensure that the complete FCP WRITE payload has been received.
581 * Otherwise return an exception via CHECK_CONDITION status.
582 */
583 if (!cmd->write_data_transferred) {
584 /*
585 * Check if se_cmd has already been aborted via LUN_RESET, and
586 * waiting upon completion in tcm_qla2xxx_write_pending_status()
587 */
588 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
589 complete(&cmd->se_cmd.t_transport_stop_comp);
590 return;
591 }
592
593 transport_generic_request_failure(&cmd->se_cmd,
594 TCM_CHECK_CONDITION_ABORT_CMD);
595 return;
596 }
597
598 return target_execute_cmd(&cmd->se_cmd);
599 }
600
601 /*
602 * Called from qla_target.c:qlt_do_ctio_completion()
603 */
604 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
605 {
606 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
607 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
608 }
609
610 /*
611 * Called from qla_target.c:qlt_issue_task_mgmt()
612 */
613 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
614 uint8_t tmr_func, uint32_t tag)
615 {
616 struct qla_tgt_sess *sess = mcmd->sess;
617 struct se_cmd *se_cmd = &mcmd->se_cmd;
618
619 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
620 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
621 }
622
623 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
624 {
625 struct qla_tgt_cmd *cmd = container_of(se_cmd,
626 struct qla_tgt_cmd, se_cmd);
627
628 cmd->bufflen = se_cmd->data_length;
629 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
630 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
631
632 cmd->sg_cnt = se_cmd->t_data_nents;
633 cmd->sg = se_cmd->t_data_sg;
634 cmd->offset = 0;
635
636 /*
637 * Now queue completed DATA_IN the qla2xxx LLD and response ring
638 */
639 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
640 se_cmd->scsi_status);
641 }
642
643 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
644 {
645 struct qla_tgt_cmd *cmd = container_of(se_cmd,
646 struct qla_tgt_cmd, se_cmd);
647 int xmit_type = QLA_TGT_XMIT_STATUS;
648
649 cmd->bufflen = se_cmd->data_length;
650 cmd->sg = NULL;
651 cmd->sg_cnt = 0;
652 cmd->offset = 0;
653 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
654 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
655
656 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
657 /*
658 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
659 * for qla_tgt_xmit_response LLD code
660 */
661 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
662 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
663 se_cmd->residual_count = 0;
664 }
665 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
666 se_cmd->residual_count += se_cmd->data_length;
667
668 cmd->bufflen = 0;
669 }
670 /*
671 * Now queue status response to qla2xxx LLD code and response ring
672 */
673 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
674 }
675
676 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
677 {
678 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
679 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
680 struct qla_tgt_mgmt_cmd, se_cmd);
681
682 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
683 mcmd, se_tmr->function, se_tmr->response);
684 /*
685 * Do translation between TCM TM response codes and
686 * QLA2xxx FC TM response codes.
687 */
688 switch (se_tmr->response) {
689 case TMR_FUNCTION_COMPLETE:
690 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
691 break;
692 case TMR_TASK_DOES_NOT_EXIST:
693 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
694 break;
695 case TMR_FUNCTION_REJECTED:
696 mcmd->fc_tm_rsp = FC_TM_REJECT;
697 break;
698 case TMR_LUN_DOES_NOT_EXIST:
699 default:
700 mcmd->fc_tm_rsp = FC_TM_FAILED;
701 break;
702 }
703 /*
704 * Queue the TM response to QLA2xxx LLD to build a
705 * CTIO response packet.
706 */
707 qlt_xmit_tm_rsp(mcmd);
708 }
709
710 /* Local pointer to allocated TCM configfs fabric module */
711 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
712 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
713
714 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
715 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
716 /*
717 * Expected to be called with struct qla_hw_data->hardware_lock held
718 */
719 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
720 {
721 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
722 struct se_portal_group *se_tpg = se_nacl->se_tpg;
723 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
724 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
725 struct tcm_qla2xxx_lport, lport_wwn);
726 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
727 struct tcm_qla2xxx_nacl, se_node_acl);
728 void *node;
729
730 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
731
732 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
733 WARN_ON(node && (node != se_nacl));
734
735 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
736 se_nacl, nacl->nport_wwnn, nacl->nport_id);
737 /*
738 * Now clear the se_nacl and session pointers from our HW lport lookup
739 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
740 *
741 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
742 * target_wait_for_sess_cmds() before the session waits for outstanding
743 * I/O to complete, to avoid a race between session shutdown execution
744 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
745 */
746 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
747 }
748
749 static void tcm_qla2xxx_release_session(struct kref *kref)
750 {
751 struct se_session *se_sess = container_of(kref,
752 struct se_session, sess_kref);
753
754 qlt_unreg_sess(se_sess->fabric_sess_ptr);
755 }
756
757 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
758 {
759 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
760 struct qla_hw_data *ha = sess->vha->hw;
761 unsigned long flags;
762
763 spin_lock_irqsave(&ha->hardware_lock, flags);
764 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
765 spin_unlock_irqrestore(&ha->hardware_lock, flags);
766 }
767
768 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
769 {
770 if (!sess)
771 return;
772
773 assert_spin_locked(&sess->vha->hw->hardware_lock);
774 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
775 }
776
777 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
778 {
779 assert_spin_locked(&sess->vha->hw->hardware_lock);
780 target_sess_cmd_list_set_waiting(sess->se_sess);
781 }
782
783 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
784 struct se_portal_group *se_tpg,
785 struct config_group *group,
786 const char *name)
787 {
788 struct se_node_acl *se_nacl, *se_nacl_new;
789 struct tcm_qla2xxx_nacl *nacl;
790 u64 wwnn;
791 u32 qla2xxx_nexus_depth;
792
793 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
794 return ERR_PTR(-EINVAL);
795
796 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
797 if (!se_nacl_new)
798 return ERR_PTR(-ENOMEM);
799 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
800 qla2xxx_nexus_depth = 1;
801
802 /*
803 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
804 * when converting a NodeACL from demo mode -> explict
805 */
806 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
807 name, qla2xxx_nexus_depth);
808 if (IS_ERR(se_nacl)) {
809 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
810 return se_nacl;
811 }
812 /*
813 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
814 */
815 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
816 nacl->nport_wwnn = wwnn;
817 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
818
819 return se_nacl;
820 }
821
822 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
823 {
824 struct se_portal_group *se_tpg = se_acl->se_tpg;
825 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
826 struct tcm_qla2xxx_nacl, se_node_acl);
827
828 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
829 kfree(nacl);
830 }
831
832 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
833
834 #define DEF_QLA_TPG_ATTRIB(name) \
835 \
836 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
837 struct se_portal_group *se_tpg, \
838 char *page) \
839 { \
840 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
841 struct tcm_qla2xxx_tpg, se_tpg); \
842 \
843 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
844 } \
845 \
846 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
847 struct se_portal_group *se_tpg, \
848 const char *page, \
849 size_t count) \
850 { \
851 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
852 struct tcm_qla2xxx_tpg, se_tpg); \
853 unsigned long val; \
854 int ret; \
855 \
856 ret = kstrtoul(page, 0, &val); \
857 if (ret < 0) { \
858 pr_err("kstrtoul() failed with" \
859 " ret: %d\n", ret); \
860 return -EINVAL; \
861 } \
862 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
863 \
864 return (!ret) ? count : -EINVAL; \
865 }
866
867 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
868 \
869 static int tcm_qla2xxx_set_attrib_##_name( \
870 struct tcm_qla2xxx_tpg *tpg, \
871 unsigned long val) \
872 { \
873 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
874 \
875 if ((val != 0) && (val != 1)) { \
876 pr_err("Illegal boolean value %lu\n", val); \
877 return -EINVAL; \
878 } \
879 \
880 a->_name = val; \
881 return 0; \
882 }
883
884 #define QLA_TPG_ATTR(_name, _mode) \
885 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
886
887 /*
888 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
889 */
890 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
891 DEF_QLA_TPG_ATTRIB(generate_node_acls);
892 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
893
894 /*
895 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
896 */
897 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
898 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
899 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
900
901 /*
902 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
903 */
904 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
905 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
906 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
907
908 /*
909 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
910 */
911 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
912 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
913 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
914
915 /*
916 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
917 */
918 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
919 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
920 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
921
922 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
923 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
924 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
925 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
926 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
927 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
928 NULL,
929 };
930
931 /* End items for tcm_qla2xxx_tpg_attrib_cit */
932
933 static ssize_t tcm_qla2xxx_tpg_show_enable(
934 struct se_portal_group *se_tpg,
935 char *page)
936 {
937 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
938 struct tcm_qla2xxx_tpg, se_tpg);
939
940 return snprintf(page, PAGE_SIZE, "%d\n",
941 atomic_read(&tpg->lport_tpg_enabled));
942 }
943
944 static ssize_t tcm_qla2xxx_tpg_store_enable(
945 struct se_portal_group *se_tpg,
946 const char *page,
947 size_t count)
948 {
949 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
950 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
951 struct tcm_qla2xxx_lport, lport_wwn);
952 struct scsi_qla_host *vha = lport->qla_vha;
953 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
954 struct tcm_qla2xxx_tpg, se_tpg);
955 unsigned long op;
956 int rc;
957
958 rc = kstrtoul(page, 0, &op);
959 if (rc < 0) {
960 pr_err("kstrtoul() returned %d\n", rc);
961 return -EINVAL;
962 }
963 if ((op != 1) && (op != 0)) {
964 pr_err("Illegal value for tpg_enable: %lu\n", op);
965 return -EINVAL;
966 }
967
968 if (op) {
969 atomic_set(&tpg->lport_tpg_enabled, 1);
970 qlt_enable_vha(vha);
971 } else {
972 if (!vha->vha_tgt.qla_tgt) {
973 pr_err("struct qla_hw_data *vha->vha_tgt.qla_tgt is NULL\n");
974 return -ENODEV;
975 }
976 atomic_set(&tpg->lport_tpg_enabled, 0);
977 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
978 }
979
980 return count;
981 }
982
983 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
984
985 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
986 &tcm_qla2xxx_tpg_enable.attr,
987 NULL,
988 };
989
990 static struct se_portal_group *tcm_qla2xxx_make_tpg(
991 struct se_wwn *wwn,
992 struct config_group *group,
993 const char *name)
994 {
995 struct tcm_qla2xxx_lport *lport = container_of(wwn,
996 struct tcm_qla2xxx_lport, lport_wwn);
997 struct tcm_qla2xxx_tpg *tpg;
998 unsigned long tpgt;
999 int ret;
1000
1001 if (strstr(name, "tpgt_") != name)
1002 return ERR_PTR(-EINVAL);
1003 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1004 return ERR_PTR(-EINVAL);
1005
1006 if ((tpgt != 1)) {
1007 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1008 return ERR_PTR(-ENOSYS);
1009 }
1010
1011 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1012 if (!tpg) {
1013 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1014 return ERR_PTR(-ENOMEM);
1015 }
1016 tpg->lport = lport;
1017 tpg->lport_tpgt = tpgt;
1018 /*
1019 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1020 * NodeACLs
1021 */
1022 tpg->tpg_attrib.generate_node_acls = 1;
1023 tpg->tpg_attrib.demo_mode_write_protect = 1;
1024 tpg->tpg_attrib.cache_dynamic_acls = 1;
1025 tpg->tpg_attrib.demo_mode_login_only = 1;
1026
1027 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1028 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1029 if (ret < 0) {
1030 kfree(tpg);
1031 return NULL;
1032 }
1033
1034 lport->tpg_1 = tpg;
1035
1036 return &tpg->se_tpg;
1037 }
1038
1039 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1040 {
1041 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1042 struct tcm_qla2xxx_tpg, se_tpg);
1043 struct tcm_qla2xxx_lport *lport = tpg->lport;
1044 struct scsi_qla_host *vha = lport->qla_vha;
1045 /*
1046 * Call into qla2x_target.c LLD logic to shutdown the active
1047 * FC Nexuses and disable target mode operation for this qla_hw_data
1048 */
1049 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1050 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1051
1052 core_tpg_deregister(se_tpg);
1053 /*
1054 * Clear local TPG=1 pointer for non NPIV mode.
1055 */
1056 lport->tpg_1 = NULL;
1057
1058 kfree(tpg);
1059 }
1060
1061 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1062 struct se_wwn *wwn,
1063 struct config_group *group,
1064 const char *name)
1065 {
1066 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1067 struct tcm_qla2xxx_lport, lport_wwn);
1068 struct tcm_qla2xxx_tpg *tpg;
1069 unsigned long tpgt;
1070 int ret;
1071
1072 if (strstr(name, "tpgt_") != name)
1073 return ERR_PTR(-EINVAL);
1074 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1075 return ERR_PTR(-EINVAL);
1076
1077 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1078 if (!tpg) {
1079 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1080 return ERR_PTR(-ENOMEM);
1081 }
1082 tpg->lport = lport;
1083 tpg->lport_tpgt = tpgt;
1084
1085 /*
1086 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1087 * NodeACLs
1088 */
1089 tpg->tpg_attrib.generate_node_acls = 1;
1090 tpg->tpg_attrib.demo_mode_write_protect = 1;
1091 tpg->tpg_attrib.cache_dynamic_acls = 1;
1092 tpg->tpg_attrib.demo_mode_login_only = 1;
1093
1094 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1095 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1096 if (ret < 0) {
1097 kfree(tpg);
1098 return NULL;
1099 }
1100 lport->tpg_1 = tpg;
1101 return &tpg->se_tpg;
1102 }
1103
1104 /*
1105 * Expected to be called with struct qla_hw_data->hardware_lock held
1106 */
1107 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1108 scsi_qla_host_t *vha,
1109 const uint8_t *s_id)
1110 {
1111 struct tcm_qla2xxx_lport *lport;
1112 struct se_node_acl *se_nacl;
1113 struct tcm_qla2xxx_nacl *nacl;
1114 u32 key;
1115
1116 lport = vha->vha_tgt.target_lport_ptr;
1117 if (!lport) {
1118 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1119 dump_stack();
1120 return NULL;
1121 }
1122
1123 key = (((unsigned long)s_id[0] << 16) |
1124 ((unsigned long)s_id[1] << 8) |
1125 (unsigned long)s_id[2]);
1126 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1127
1128 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1129 if (!se_nacl) {
1130 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1131 return NULL;
1132 }
1133 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1134 se_nacl, se_nacl->initiatorname);
1135
1136 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1137 if (!nacl->qla_tgt_sess) {
1138 pr_err("Unable to locate struct qla_tgt_sess\n");
1139 return NULL;
1140 }
1141
1142 return nacl->qla_tgt_sess;
1143 }
1144
1145 /*
1146 * Expected to be called with struct qla_hw_data->hardware_lock held
1147 */
1148 static void tcm_qla2xxx_set_sess_by_s_id(
1149 struct tcm_qla2xxx_lport *lport,
1150 struct se_node_acl *new_se_nacl,
1151 struct tcm_qla2xxx_nacl *nacl,
1152 struct se_session *se_sess,
1153 struct qla_tgt_sess *qla_tgt_sess,
1154 uint8_t *s_id)
1155 {
1156 u32 key;
1157 void *slot;
1158 int rc;
1159
1160 key = (((unsigned long)s_id[0] << 16) |
1161 ((unsigned long)s_id[1] << 8) |
1162 (unsigned long)s_id[2]);
1163 pr_debug("set_sess_by_s_id: %06x\n", key);
1164
1165 slot = btree_lookup32(&lport->lport_fcport_map, key);
1166 if (!slot) {
1167 if (new_se_nacl) {
1168 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1169 nacl->nport_id = key;
1170 rc = btree_insert32(&lport->lport_fcport_map, key,
1171 new_se_nacl, GFP_ATOMIC);
1172 if (rc)
1173 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1174 (int)key);
1175 } else {
1176 pr_debug("Wiping nonexisting fc_port entry\n");
1177 }
1178
1179 qla_tgt_sess->se_sess = se_sess;
1180 nacl->qla_tgt_sess = qla_tgt_sess;
1181 return;
1182 }
1183
1184 if (nacl->qla_tgt_sess) {
1185 if (new_se_nacl == NULL) {
1186 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1187 btree_remove32(&lport->lport_fcport_map, key);
1188 nacl->qla_tgt_sess = NULL;
1189 return;
1190 }
1191 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1192 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1193 qla_tgt_sess->se_sess = se_sess;
1194 nacl->qla_tgt_sess = qla_tgt_sess;
1195 return;
1196 }
1197
1198 if (new_se_nacl == NULL) {
1199 pr_debug("Clearing existing fc_port entry\n");
1200 btree_remove32(&lport->lport_fcport_map, key);
1201 return;
1202 }
1203
1204 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1205 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1206 qla_tgt_sess->se_sess = se_sess;
1207 nacl->qla_tgt_sess = qla_tgt_sess;
1208
1209 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1210 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1211 }
1212
1213 /*
1214 * Expected to be called with struct qla_hw_data->hardware_lock held
1215 */
1216 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1217 scsi_qla_host_t *vha,
1218 const uint16_t loop_id)
1219 {
1220 struct tcm_qla2xxx_lport *lport;
1221 struct se_node_acl *se_nacl;
1222 struct tcm_qla2xxx_nacl *nacl;
1223 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1224
1225 lport = vha->vha_tgt.target_lport_ptr;
1226 if (!lport) {
1227 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1228 dump_stack();
1229 return NULL;
1230 }
1231
1232 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1233
1234 fc_loopid = lport->lport_loopid_map + loop_id;
1235 se_nacl = fc_loopid->se_nacl;
1236 if (!se_nacl) {
1237 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1238 loop_id);
1239 return NULL;
1240 }
1241
1242 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1243
1244 if (!nacl->qla_tgt_sess) {
1245 pr_err("Unable to locate struct qla_tgt_sess\n");
1246 return NULL;
1247 }
1248
1249 return nacl->qla_tgt_sess;
1250 }
1251
1252 /*
1253 * Expected to be called with struct qla_hw_data->hardware_lock held
1254 */
1255 static void tcm_qla2xxx_set_sess_by_loop_id(
1256 struct tcm_qla2xxx_lport *lport,
1257 struct se_node_acl *new_se_nacl,
1258 struct tcm_qla2xxx_nacl *nacl,
1259 struct se_session *se_sess,
1260 struct qla_tgt_sess *qla_tgt_sess,
1261 uint16_t loop_id)
1262 {
1263 struct se_node_acl *saved_nacl;
1264 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1265
1266 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1267
1268 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1269 lport->lport_loopid_map)[loop_id];
1270
1271 saved_nacl = fc_loopid->se_nacl;
1272 if (!saved_nacl) {
1273 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1274 fc_loopid->se_nacl = new_se_nacl;
1275 if (qla_tgt_sess->se_sess != se_sess)
1276 qla_tgt_sess->se_sess = se_sess;
1277 if (nacl->qla_tgt_sess != qla_tgt_sess)
1278 nacl->qla_tgt_sess = qla_tgt_sess;
1279 return;
1280 }
1281
1282 if (nacl->qla_tgt_sess) {
1283 if (new_se_nacl == NULL) {
1284 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1285 fc_loopid->se_nacl = NULL;
1286 nacl->qla_tgt_sess = NULL;
1287 return;
1288 }
1289
1290 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1291 fc_loopid->se_nacl = new_se_nacl;
1292 if (qla_tgt_sess->se_sess != se_sess)
1293 qla_tgt_sess->se_sess = se_sess;
1294 if (nacl->qla_tgt_sess != qla_tgt_sess)
1295 nacl->qla_tgt_sess = qla_tgt_sess;
1296 return;
1297 }
1298
1299 if (new_se_nacl == NULL) {
1300 pr_debug("Clearing fc_loopid->se_nacl\n");
1301 fc_loopid->se_nacl = NULL;
1302 return;
1303 }
1304
1305 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1306 fc_loopid->se_nacl = new_se_nacl;
1307 if (qla_tgt_sess->se_sess != se_sess)
1308 qla_tgt_sess->se_sess = se_sess;
1309 if (nacl->qla_tgt_sess != qla_tgt_sess)
1310 nacl->qla_tgt_sess = qla_tgt_sess;
1311
1312 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1313 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1314 }
1315
1316 /*
1317 * Should always be called with qla_hw_data->hardware_lock held.
1318 */
1319 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1320 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1321 {
1322 struct se_session *se_sess = sess->se_sess;
1323 unsigned char be_sid[3];
1324
1325 be_sid[0] = sess->s_id.b.domain;
1326 be_sid[1] = sess->s_id.b.area;
1327 be_sid[2] = sess->s_id.b.al_pa;
1328
1329 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1330 sess, be_sid);
1331 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1332 sess, sess->loop_id);
1333 }
1334
1335 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1336 {
1337 struct qla_tgt *tgt = sess->tgt;
1338 struct qla_hw_data *ha = tgt->ha;
1339 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1340 struct se_session *se_sess;
1341 struct se_node_acl *se_nacl;
1342 struct tcm_qla2xxx_lport *lport;
1343 struct tcm_qla2xxx_nacl *nacl;
1344
1345 BUG_ON(in_interrupt());
1346
1347 se_sess = sess->se_sess;
1348 if (!se_sess) {
1349 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1350 dump_stack();
1351 return;
1352 }
1353 se_nacl = se_sess->se_node_acl;
1354 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1355
1356 lport = vha->vha_tgt.target_lport_ptr;
1357 if (!lport) {
1358 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1359 dump_stack();
1360 return;
1361 }
1362 target_wait_for_sess_cmds(se_sess);
1363
1364 transport_deregister_session_configfs(sess->se_sess);
1365 transport_deregister_session(sess->se_sess);
1366 }
1367
1368 /*
1369 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1370 * to locate struct se_node_acl
1371 */
1372 static int tcm_qla2xxx_check_initiator_node_acl(
1373 scsi_qla_host_t *vha,
1374 unsigned char *fc_wwpn,
1375 void *qla_tgt_sess,
1376 uint8_t *s_id,
1377 uint16_t loop_id)
1378 {
1379 struct qla_hw_data *ha = vha->hw;
1380 struct tcm_qla2xxx_lport *lport;
1381 struct tcm_qla2xxx_tpg *tpg;
1382 struct tcm_qla2xxx_nacl *nacl;
1383 struct se_portal_group *se_tpg;
1384 struct se_node_acl *se_nacl;
1385 struct se_session *se_sess;
1386 struct qla_tgt_sess *sess = qla_tgt_sess;
1387 unsigned char port_name[36];
1388 unsigned long flags;
1389
1390 lport = vha->vha_tgt.target_lport_ptr;
1391 if (!lport) {
1392 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1393 dump_stack();
1394 return -EINVAL;
1395 }
1396 /*
1397 * Locate the TPG=1 reference..
1398 */
1399 tpg = lport->tpg_1;
1400 if (!tpg) {
1401 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1402 return -EINVAL;
1403 }
1404 se_tpg = &tpg->se_tpg;
1405
1406 se_sess = transport_init_session();
1407 if (IS_ERR(se_sess)) {
1408 pr_err("Unable to initialize struct se_session\n");
1409 return PTR_ERR(se_sess);
1410 }
1411 /*
1412 * Format the FCP Initiator port_name into colon seperated values to
1413 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1414 */
1415 memset(&port_name, 0, 36);
1416 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1417 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1418 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1419 /*
1420 * Locate our struct se_node_acl either from an explict NodeACL created
1421 * via ConfigFS, or via running in TPG demo mode.
1422 */
1423 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1424 port_name);
1425 if (!se_sess->se_node_acl) {
1426 transport_free_session(se_sess);
1427 return -EINVAL;
1428 }
1429 se_nacl = se_sess->se_node_acl;
1430 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1431 /*
1432 * And now setup the new se_nacl and session pointers into our HW lport
1433 * mappings for fabric S_ID and LOOP_ID.
1434 */
1435 spin_lock_irqsave(&ha->hardware_lock, flags);
1436 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1437 qla_tgt_sess, s_id);
1438 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1439 qla_tgt_sess, loop_id);
1440 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1441 /*
1442 * Finally register the new FC Nexus with TCM
1443 */
1444 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1445
1446 return 0;
1447 }
1448
1449 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1450 uint16_t loop_id, bool conf_compl_supported)
1451 {
1452 struct qla_tgt *tgt = sess->tgt;
1453 struct qla_hw_data *ha = tgt->ha;
1454 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1455 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1456 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1457 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1458 struct tcm_qla2xxx_nacl, se_node_acl);
1459 u32 key;
1460
1461
1462 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1463 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1464 sess, sess->port_name,
1465 sess->loop_id, loop_id, sess->s_id.b.domain,
1466 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1467 s_id.b.area, s_id.b.al_pa);
1468
1469 if (sess->loop_id != loop_id) {
1470 /*
1471 * Because we can shuffle loop IDs around and we
1472 * update different sessions non-atomically, we might
1473 * have overwritten this session's old loop ID
1474 * already, and we might end up overwriting some other
1475 * session that will be updated later. So we have to
1476 * be extra careful and we can't warn about those things...
1477 */
1478 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1479 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1480
1481 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1482
1483 sess->loop_id = loop_id;
1484 }
1485
1486 if (sess->s_id.b24 != s_id.b24) {
1487 key = (((u32) sess->s_id.b.domain << 16) |
1488 ((u32) sess->s_id.b.area << 8) |
1489 ((u32) sess->s_id.b.al_pa));
1490
1491 if (btree_lookup32(&lport->lport_fcport_map, key))
1492 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1493 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1494 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1495 else
1496 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1497 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1498
1499 key = (((u32) s_id.b.domain << 16) |
1500 ((u32) s_id.b.area << 8) |
1501 ((u32) s_id.b.al_pa));
1502
1503 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1504 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1505 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1506 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1507 } else {
1508 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1509 }
1510
1511 sess->s_id = s_id;
1512 nacl->nport_id = key;
1513 }
1514
1515 sess->conf_compl_supported = conf_compl_supported;
1516 }
1517
1518 /*
1519 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1520 */
1521 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1522 .handle_cmd = tcm_qla2xxx_handle_cmd,
1523 .handle_data = tcm_qla2xxx_handle_data,
1524 .handle_tmr = tcm_qla2xxx_handle_tmr,
1525 .free_cmd = tcm_qla2xxx_free_cmd,
1526 .free_mcmd = tcm_qla2xxx_free_mcmd,
1527 .free_session = tcm_qla2xxx_free_session,
1528 .update_sess = tcm_qla2xxx_update_sess,
1529 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1530 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1531 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1532 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1533 .put_sess = tcm_qla2xxx_put_sess,
1534 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1535 };
1536
1537 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1538 {
1539 int rc;
1540
1541 rc = btree_init32(&lport->lport_fcport_map);
1542 if (rc) {
1543 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1544 return rc;
1545 }
1546
1547 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1548 65536);
1549 if (!lport->lport_loopid_map) {
1550 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1551 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1552 btree_destroy32(&lport->lport_fcport_map);
1553 return -ENOMEM;
1554 }
1555 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1556 * 65536);
1557 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1558 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1559 return 0;
1560 }
1561
1562 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1563 void *target_lport_ptr,
1564 u64 npiv_wwpn, u64 npiv_wwnn)
1565 {
1566 struct qla_hw_data *ha = vha->hw;
1567 struct tcm_qla2xxx_lport *lport =
1568 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1569 /*
1570 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1571 */
1572 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1573 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1574 lport->qla_vha = vha;
1575
1576 return 0;
1577 }
1578
1579 static struct se_wwn *tcm_qla2xxx_make_lport(
1580 struct target_fabric_configfs *tf,
1581 struct config_group *group,
1582 const char *name)
1583 {
1584 struct tcm_qla2xxx_lport *lport;
1585 u64 wwpn;
1586 int ret = -ENODEV;
1587
1588 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1589 return ERR_PTR(-EINVAL);
1590
1591 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1592 if (!lport) {
1593 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1594 return ERR_PTR(-ENOMEM);
1595 }
1596 lport->lport_wwpn = wwpn;
1597 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1598 wwpn);
1599 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1600
1601 ret = tcm_qla2xxx_init_lport(lport);
1602 if (ret != 0)
1603 goto out;
1604
1605 ret = qlt_lport_register(lport, wwpn, 0, 0,
1606 tcm_qla2xxx_lport_register_cb);
1607 if (ret != 0)
1608 goto out_lport;
1609
1610 return &lport->lport_wwn;
1611 out_lport:
1612 vfree(lport->lport_loopid_map);
1613 btree_destroy32(&lport->lport_fcport_map);
1614 out:
1615 kfree(lport);
1616 return ERR_PTR(ret);
1617 }
1618
1619 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1620 {
1621 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1622 struct tcm_qla2xxx_lport, lport_wwn);
1623 struct scsi_qla_host *vha = lport->qla_vha;
1624 struct se_node_acl *node;
1625 u32 key = 0;
1626
1627 /*
1628 * Call into qla2x_target.c LLD logic to complete the
1629 * shutdown of struct qla_tgt after the call to
1630 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1631 */
1632 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1633 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1634
1635 qlt_lport_deregister(vha);
1636
1637 vfree(lport->lport_loopid_map);
1638 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1639 btree_remove32(&lport->lport_fcport_map, key);
1640 btree_destroy32(&lport->lport_fcport_map);
1641 kfree(lport);
1642 }
1643
1644 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1645 void *target_lport_ptr,
1646 u64 npiv_wwpn, u64 npiv_wwnn)
1647 {
1648 struct fc_vport *vport;
1649 struct Scsi_Host *sh = base_vha->host;
1650 struct scsi_qla_host *npiv_vha;
1651 struct tcm_qla2xxx_lport *lport =
1652 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1653 struct fc_vport_identifiers vport_id;
1654
1655 if (!qla_tgt_mode_enabled(base_vha)) {
1656 pr_err("qla2xxx base_vha not enabled for target mode\n");
1657 return -EPERM;
1658 }
1659
1660 memset(&vport_id, 0, sizeof(vport_id));
1661 vport_id.port_name = npiv_wwpn;
1662 vport_id.node_name = npiv_wwnn;
1663 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1664 vport_id.vport_type = FC_PORTTYPE_NPIV;
1665 vport_id.disable = false;
1666
1667 vport = fc_vport_create(sh, 0, &vport_id);
1668 if (!vport) {
1669 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1670 return -ENODEV;
1671 }
1672 /*
1673 * Setup local pointer to NPIV vhba + target_lport_ptr
1674 */
1675 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1676 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1677 lport->qla_vha = npiv_vha;
1678
1679 scsi_host_get(npiv_vha->host);
1680 return 0;
1681 }
1682
1683
1684 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1685 struct target_fabric_configfs *tf,
1686 struct config_group *group,
1687 const char *name)
1688 {
1689 struct tcm_qla2xxx_lport *lport;
1690 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1691 char *p, tmp[128];
1692 int ret;
1693
1694 snprintf(tmp, 128, "%s", name);
1695
1696 p = strchr(tmp, '@');
1697 if (!p) {
1698 pr_err("Unable to locate NPIV '@' seperator\n");
1699 return ERR_PTR(-EINVAL);
1700 }
1701 *p++ = '\0';
1702
1703 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1704 return ERR_PTR(-EINVAL);
1705
1706 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1707 &npiv_wwpn, &npiv_wwnn) < 0)
1708 return ERR_PTR(-EINVAL);
1709
1710 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1711 if (!lport) {
1712 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1713 return ERR_PTR(-ENOMEM);
1714 }
1715 lport->lport_npiv_wwpn = npiv_wwpn;
1716 lport->lport_npiv_wwnn = npiv_wwnn;
1717 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1718 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1719 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1720
1721 ret = tcm_qla2xxx_init_lport(lport);
1722 if (ret != 0)
1723 goto out;
1724
1725 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1726 tcm_qla2xxx_lport_register_npiv_cb);
1727 if (ret != 0)
1728 goto out_lport;
1729
1730 return &lport->lport_wwn;
1731 out_lport:
1732 vfree(lport->lport_loopid_map);
1733 btree_destroy32(&lport->lport_fcport_map);
1734 out:
1735 kfree(lport);
1736 return ERR_PTR(ret);
1737 }
1738
1739 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1740 {
1741 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1742 struct tcm_qla2xxx_lport, lport_wwn);
1743 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1744 struct qla_hw_data *ha = npiv_vha->hw;
1745 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1746
1747 scsi_host_put(npiv_vha->host);
1748 /*
1749 * Notify libfc that we want to release the vha->fc_vport
1750 */
1751 fc_vport_terminate(npiv_vha->fc_vport);
1752 scsi_host_put(base_vha->host);
1753 kfree(lport);
1754 }
1755
1756
1757 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1758 struct target_fabric_configfs *tf,
1759 char *page)
1760 {
1761 return sprintf(page,
1762 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1763 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1764 utsname()->machine);
1765 }
1766
1767 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1768
1769 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1770 &tcm_qla2xxx_wwn_version.attr,
1771 NULL,
1772 };
1773
1774 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1775 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1776 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1777 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1778 .tpg_get_tag = tcm_qla2xxx_get_tag,
1779 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1780 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1781 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1782 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1783 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1784 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1785 .tpg_check_demo_mode_write_protect =
1786 tcm_qla2xxx_check_demo_write_protect,
1787 .tpg_check_prod_mode_write_protect =
1788 tcm_qla2xxx_check_prod_write_protect,
1789 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1790 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1791 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1792 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1793 .check_stop_free = tcm_qla2xxx_check_stop_free,
1794 .release_cmd = tcm_qla2xxx_release_cmd,
1795 .put_session = tcm_qla2xxx_put_session,
1796 .shutdown_session = tcm_qla2xxx_shutdown_session,
1797 .close_session = tcm_qla2xxx_close_session,
1798 .sess_get_index = tcm_qla2xxx_sess_get_index,
1799 .sess_get_initiator_sid = NULL,
1800 .write_pending = tcm_qla2xxx_write_pending,
1801 .write_pending_status = tcm_qla2xxx_write_pending_status,
1802 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1803 .get_task_tag = tcm_qla2xxx_get_task_tag,
1804 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1805 .queue_data_in = tcm_qla2xxx_queue_data_in,
1806 .queue_status = tcm_qla2xxx_queue_status,
1807 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1808 /*
1809 * Setup function pointers for generic logic in
1810 * target_core_fabric_configfs.c
1811 */
1812 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1813 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1814 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1815 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1816 .fabric_post_link = NULL,
1817 .fabric_pre_unlink = NULL,
1818 .fabric_make_np = NULL,
1819 .fabric_drop_np = NULL,
1820 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1821 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1822 };
1823
1824 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1825 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1826 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1827 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1828 .tpg_get_tag = tcm_qla2xxx_get_tag,
1829 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1830 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1831 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1832 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1833 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1834 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1835 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1836 .tpg_check_prod_mode_write_protect =
1837 tcm_qla2xxx_check_prod_write_protect,
1838 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1839 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1840 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1841 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1842 .check_stop_free = tcm_qla2xxx_check_stop_free,
1843 .release_cmd = tcm_qla2xxx_release_cmd,
1844 .put_session = tcm_qla2xxx_put_session,
1845 .shutdown_session = tcm_qla2xxx_shutdown_session,
1846 .close_session = tcm_qla2xxx_close_session,
1847 .sess_get_index = tcm_qla2xxx_sess_get_index,
1848 .sess_get_initiator_sid = NULL,
1849 .write_pending = tcm_qla2xxx_write_pending,
1850 .write_pending_status = tcm_qla2xxx_write_pending_status,
1851 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1852 .get_task_tag = tcm_qla2xxx_get_task_tag,
1853 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1854 .queue_data_in = tcm_qla2xxx_queue_data_in,
1855 .queue_status = tcm_qla2xxx_queue_status,
1856 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1857 /*
1858 * Setup function pointers for generic logic in
1859 * target_core_fabric_configfs.c
1860 */
1861 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1862 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1863 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1864 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1865 .fabric_post_link = NULL,
1866 .fabric_pre_unlink = NULL,
1867 .fabric_make_np = NULL,
1868 .fabric_drop_np = NULL,
1869 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1870 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1871 };
1872
1873 static int tcm_qla2xxx_register_configfs(void)
1874 {
1875 struct target_fabric_configfs *fabric, *npiv_fabric;
1876 int ret;
1877
1878 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1879 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1880 utsname()->machine);
1881 /*
1882 * Register the top level struct config_item_type with TCM core
1883 */
1884 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1885 if (IS_ERR(fabric)) {
1886 pr_err("target_fabric_configfs_init() failed\n");
1887 return PTR_ERR(fabric);
1888 }
1889 /*
1890 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1891 */
1892 fabric->tf_ops = tcm_qla2xxx_ops;
1893 /*
1894 * Setup default attribute lists for various fabric->tf_cit_tmpl
1895 */
1896 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1897 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1898 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs =
1899 tcm_qla2xxx_tpg_attrib_attrs;
1900 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
1901 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
1902 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1903 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1904 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1905 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1906 /*
1907 * Register the fabric for use within TCM
1908 */
1909 ret = target_fabric_configfs_register(fabric);
1910 if (ret < 0) {
1911 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1912 return ret;
1913 }
1914 /*
1915 * Setup our local pointer to *fabric
1916 */
1917 tcm_qla2xxx_fabric_configfs = fabric;
1918 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1919
1920 /*
1921 * Register the top level struct config_item_type for NPIV with TCM core
1922 */
1923 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1924 if (IS_ERR(npiv_fabric)) {
1925 pr_err("target_fabric_configfs_init() failed\n");
1926 ret = PTR_ERR(npiv_fabric);
1927 goto out_fabric;
1928 }
1929 /*
1930 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1931 */
1932 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1933 /*
1934 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1935 */
1936 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1937 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs =
1938 tcm_qla2xxx_tpg_attrs;
1939 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
1940 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
1941 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
1942 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1943 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1944 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1945 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1946 /*
1947 * Register the npiv_fabric for use within TCM
1948 */
1949 ret = target_fabric_configfs_register(npiv_fabric);
1950 if (ret < 0) {
1951 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1952 goto out_fabric;
1953 }
1954 /*
1955 * Setup our local pointer to *npiv_fabric
1956 */
1957 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1958 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1959
1960 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1961 WQ_MEM_RECLAIM, 0);
1962 if (!tcm_qla2xxx_free_wq) {
1963 ret = -ENOMEM;
1964 goto out_fabric_npiv;
1965 }
1966
1967 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1968 if (!tcm_qla2xxx_cmd_wq) {
1969 ret = -ENOMEM;
1970 goto out_free_wq;
1971 }
1972
1973 return 0;
1974
1975 out_free_wq:
1976 destroy_workqueue(tcm_qla2xxx_free_wq);
1977 out_fabric_npiv:
1978 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1979 out_fabric:
1980 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1981 return ret;
1982 }
1983
1984 static void tcm_qla2xxx_deregister_configfs(void)
1985 {
1986 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1987 destroy_workqueue(tcm_qla2xxx_free_wq);
1988
1989 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1990 tcm_qla2xxx_fabric_configfs = NULL;
1991 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1992
1993 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1994 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1995 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1996 }
1997
1998 static int __init tcm_qla2xxx_init(void)
1999 {
2000 int ret;
2001
2002 ret = tcm_qla2xxx_register_configfs();
2003 if (ret < 0)
2004 return ret;
2005
2006 return 0;
2007 }
2008
2009 static void __exit tcm_qla2xxx_exit(void)
2010 {
2011 tcm_qla2xxx_deregister_configfs();
2012 }
2013
2014 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2015 MODULE_LICENSE("GPL");
2016 module_init(tcm_qla2xxx_init);
2017 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support