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Merge tag 'ceph-for-4.13-rc8' of git://github.com/ceph/ceph-client
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob3f82ea1b72dc8739283992b4f425d77692b51e7b
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 <linux/utsname.h>
29 #include <linux/vmalloc.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
46 #include "qla_def.h"
47 #include "qla_target.h"
48 #include "tcm_qla2xxx.h"
49
50 static struct workqueue_struct *tcm_qla2xxx_free_wq;
51 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
52
53 /*
54 * Parse WWN.
55 * If strict, we require lower-case hex and colon separators to be sure
56 * the name is the same as what would be generated by ft_format_wwn()
57 * so the name and wwn are mapped one-to-one.
58 */
59 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
60 {
61 const char *cp;
62 char c;
63 u32 nibble;
64 u32 byte = 0;
65 u32 pos = 0;
66 u32 err;
67
68 *wwn = 0;
69 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
70 c = *cp;
71 if (c == '\n' && cp[1] == '\0')
72 continue;
73 if (strict && pos++ == 2 && byte++ < 7) {
74 pos = 0;
75 if (c == ':')
76 continue;
77 err = 1;
78 goto fail;
79 }
80 if (c == '\0') {
81 err = 2;
82 if (strict && byte != 8)
83 goto fail;
84 return cp - name;
85 }
86 err = 3;
87 if (isdigit(c))
88 nibble = c - '0';
89 else if (isxdigit(c) && (islower(c) || !strict))
90 nibble = tolower(c) - 'a' + 10;
91 else
92 goto fail;
93 *wwn = (*wwn << 4) | nibble;
94 }
95 err = 4;
96 fail:
97 pr_debug("err %u len %zu pos %u byte %u\n",
98 err, cp - name, pos, byte);
99 return -1;
100 }
101
102 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
103 {
104 u8 b[8];
105
106 put_unaligned_be64(wwn, b);
107 return snprintf(buf, len,
108 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
109 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
110 }
111
112 static char *tcm_qla2xxx_get_fabric_name(void)
113 {
114 return "qla2xxx";
115 }
116
117 /*
118 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
119 */
120 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
121 {
122 unsigned int i, j;
123 u8 wwn[8];
124
125 memset(wwn, 0, sizeof(wwn));
126
127 /* Validate and store the new name */
128 for (i = 0, j = 0; i < 16; i++) {
129 int value;
130
131 value = hex_to_bin(*ns++);
132 if (value >= 0)
133 j = (j << 4) | value;
134 else
135 return -EINVAL;
136
137 if (i % 2) {
138 wwn[i/2] = j & 0xff;
139 j = 0;
140 }
141 }
142
143 *nm = wwn_to_u64(wwn);
144 return 0;
145 }
146
147 /*
148 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
149 * store_fc_host_vport_create()
150 */
151 static int tcm_qla2xxx_npiv_parse_wwn(
152 const char *name,
153 size_t count,
154 u64 *wwpn,
155 u64 *wwnn)
156 {
157 unsigned int cnt = count;
158 int rc;
159
160 *wwpn = 0;
161 *wwnn = 0;
162
163 /* count may include a LF at end of string */
164 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
165 cnt--;
166
167 /* validate we have enough characters for WWPN */
168 if ((cnt != (16+1+16)) || (name[16] != ':'))
169 return -EINVAL;
170
171 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
172 if (rc != 0)
173 return rc;
174
175 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
176 if (rc != 0)
177 return rc;
178
179 return 0;
180 }
181
182 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
183 {
184 return "qla2xxx_npiv";
185 }
186
187 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
188 {
189 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
190 struct tcm_qla2xxx_tpg, se_tpg);
191 struct tcm_qla2xxx_lport *lport = tpg->lport;
192
193 return lport->lport_naa_name;
194 }
195
196 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
197 {
198 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
199 struct tcm_qla2xxx_tpg, se_tpg);
200 return tpg->lport_tpgt;
201 }
202
203 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
204 {
205 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
206 struct tcm_qla2xxx_tpg, se_tpg);
207
208 return tpg->tpg_attrib.generate_node_acls;
209 }
210
211 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
212 {
213 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
214 struct tcm_qla2xxx_tpg, se_tpg);
215
216 return tpg->tpg_attrib.cache_dynamic_acls;
217 }
218
219 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
220 {
221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
222 struct tcm_qla2xxx_tpg, se_tpg);
223
224 return tpg->tpg_attrib.demo_mode_write_protect;
225 }
226
227 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
228 {
229 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
230 struct tcm_qla2xxx_tpg, se_tpg);
231
232 return tpg->tpg_attrib.prod_mode_write_protect;
233 }
234
235 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
236 {
237 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
238 struct tcm_qla2xxx_tpg, se_tpg);
239
240 return tpg->tpg_attrib.demo_mode_login_only;
241 }
242
243 static int tcm_qla2xxx_check_prot_fabric_only(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
248 return tpg->tpg_attrib.fabric_prot_type;
249 }
250
251 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
252 {
253 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
254 struct tcm_qla2xxx_tpg, se_tpg);
255
256 return tpg->lport_tpgt;
257 }
258
259 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
260 {
261 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
262 struct qla_tgt_mgmt_cmd, free_work);
263
264 transport_generic_free_cmd(&mcmd->se_cmd, 0);
265 }
266
267 /*
268 * Called from qla_target_template->free_mcmd(), and will call
269 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
270 * release callback. qla_hw_data->hardware_lock is expected to be held
271 */
272 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
273 {
274 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
275 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
276 }
277
278 static void tcm_qla2xxx_complete_free(struct work_struct *work)
279 {
280 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
281
282 cmd->cmd_in_wq = 0;
283
284 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
285
286 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
287 cmd->trc_flags |= TRC_CMD_FREE;
288 transport_generic_free_cmd(&cmd->se_cmd, 0);
289 }
290
291 /*
292 * Called from qla_target_template->free_cmd(), and will call
293 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
294 * release callback. qla_hw_data->hardware_lock is expected to be held
295 */
296 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
297 {
298 cmd->qpair->tgt_counters.core_qla_free_cmd++;
299 cmd->cmd_in_wq = 1;
300
301 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
302 cmd->trc_flags |= TRC_CMD_DONE;
303
304 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
305 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
306 }
307
308 /*
309 * Called from struct target_core_fabric_ops->check_stop_free() context
310 */
311 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
312 {
313 struct qla_tgt_cmd *cmd;
314
315 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
316 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
317 cmd->trc_flags |= TRC_CMD_CHK_STOP;
318 }
319
320 return target_put_sess_cmd(se_cmd);
321 }
322
323 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
324 * fabric descriptor @se_cmd command to release
325 */
326 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
327 {
328 struct qla_tgt_cmd *cmd;
329
330 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
331 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
332 struct qla_tgt_mgmt_cmd, se_cmd);
333 qlt_free_mcmd(mcmd);
334 return;
335 }
336
337 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
338 qlt_free_cmd(cmd);
339 }
340
341 static void tcm_qla2xxx_release_session(struct kref *kref)
342 {
343 struct fc_port *sess = container_of(kref,
344 struct fc_port, sess_kref);
345
346 qlt_unreg_sess(sess);
347 }
348
349 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
350 {
351 if (!sess)
352 return;
353
354 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
355 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
356 }
357
358 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
359 {
360 struct fc_port *sess = se_sess->fabric_sess_ptr;
361 struct scsi_qla_host *vha;
362 unsigned long flags;
363
364 BUG_ON(!sess);
365 vha = sess->vha;
366
367 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
368 target_sess_cmd_list_set_waiting(se_sess);
369 tcm_qla2xxx_put_sess(sess);
370 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
371 }
372
373 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
374 {
375 return 0;
376 }
377
378 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
379 {
380 struct qla_tgt_cmd *cmd = container_of(se_cmd,
381 struct qla_tgt_cmd, se_cmd);
382
383 if (cmd->aborted) {
384 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
385 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
386 * already kick start the free.
387 */
388 pr_debug("write_pending aborted cmd[%p] refcount %d "
389 "transport_state %x, t_state %x, se_cmd_flags %x\n",
390 cmd, kref_read(&cmd->se_cmd.cmd_kref),
391 cmd->se_cmd.transport_state,
392 cmd->se_cmd.t_state,
393 cmd->se_cmd.se_cmd_flags);
394 return 0;
395 }
396 cmd->trc_flags |= TRC_XFR_RDY;
397 cmd->bufflen = se_cmd->data_length;
398 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
399
400 cmd->sg_cnt = se_cmd->t_data_nents;
401 cmd->sg = se_cmd->t_data_sg;
402
403 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
404 cmd->prot_sg = se_cmd->t_prot_sg;
405 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
406 se_cmd->pi_err = 0;
407
408 /*
409 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
410 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
411 */
412 return qlt_rdy_to_xfer(cmd);
413 }
414
415 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
416 {
417 unsigned long flags;
418 /*
419 * Check for WRITE_PENDING status to determine if we need to wait for
420 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
421 */
422 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
423 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
424 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
425 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
426 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
427 50);
428 return 0;
429 }
430 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
431
432 return 0;
433 }
434
435 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
436 {
437 return;
438 }
439
440 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
441 {
442 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
443 struct qla_tgt_cmd *cmd = container_of(se_cmd,
444 struct qla_tgt_cmd, se_cmd);
445 return cmd->state;
446 }
447
448 return 0;
449 }
450
451 /*
452 * Called from process context in qla_target.c:qlt_do_work() code
453 */
454 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
455 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
456 int data_dir, int bidi)
457 {
458 struct se_cmd *se_cmd = &cmd->se_cmd;
459 struct se_session *se_sess;
460 struct fc_port *sess;
461 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
462 struct se_portal_group *se_tpg;
463 struct tcm_qla2xxx_tpg *tpg;
464 #endif
465 int flags = TARGET_SCF_ACK_KREF;
466
467 if (bidi)
468 flags |= TARGET_SCF_BIDI_OP;
469
470 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
471 flags |= TARGET_SCF_USE_CPUID;
472
473 sess = cmd->sess;
474 if (!sess) {
475 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
476 return -EINVAL;
477 }
478
479 se_sess = sess->se_sess;
480 if (!se_sess) {
481 pr_err("Unable to locate active struct se_session\n");
482 return -EINVAL;
483 }
484
485 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
486 se_tpg = se_sess->se_tpg;
487 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
488 if (unlikely(tpg->tpg_attrib.jam_host)) {
489 /* return, and dont run target_submit_cmd,discarding command */
490 return 0;
491 }
492 #endif
493
494 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
495 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
496 cmd->unpacked_lun, data_length, fcp_task_attr,
497 data_dir, flags);
498 }
499
500 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
501 {
502 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
503
504 /*
505 * Ensure that the complete FCP WRITE payload has been received.
506 * Otherwise return an exception via CHECK_CONDITION status.
507 */
508 cmd->cmd_in_wq = 0;
509
510 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
511 if (!cmd->write_data_transferred) {
512 /*
513 * Check if se_cmd has already been aborted via LUN_RESET, and
514 * waiting upon completion in tcm_qla2xxx_write_pending_status()
515 */
516 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
517 complete(&cmd->se_cmd.t_transport_stop_comp);
518 return;
519 }
520
521 switch (cmd->dif_err_code) {
522 case DIF_ERR_GRD:
523 cmd->se_cmd.pi_err =
524 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
525 break;
526 case DIF_ERR_REF:
527 cmd->se_cmd.pi_err =
528 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
529 break;
530 case DIF_ERR_APP:
531 cmd->se_cmd.pi_err =
532 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
533 break;
534 case DIF_ERR_NONE:
535 default:
536 break;
537 }
538
539 if (cmd->se_cmd.pi_err)
540 transport_generic_request_failure(&cmd->se_cmd,
541 cmd->se_cmd.pi_err);
542 else
543 transport_generic_request_failure(&cmd->se_cmd,
544 TCM_CHECK_CONDITION_ABORT_CMD);
545
546 return;
547 }
548
549 return target_execute_cmd(&cmd->se_cmd);
550 }
551
552 /*
553 * Called from qla_target.c:qlt_do_ctio_completion()
554 */
555 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
556 {
557 cmd->trc_flags |= TRC_DATA_IN;
558 cmd->cmd_in_wq = 1;
559 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
560 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
561 }
562
563 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
564 {
565 return 0;
566 }
567
568 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
569 uint16_t *pfw_prot_opts)
570 {
571 struct se_cmd *se_cmd = &cmd->se_cmd;
572
573 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
574 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
575
576 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
577 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
578
579 return 0;
580 }
581
582 /*
583 * Called from qla_target.c:qlt_issue_task_mgmt()
584 */
585 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
586 uint16_t tmr_func, uint32_t tag)
587 {
588 struct fc_port *sess = mcmd->sess;
589 struct se_cmd *se_cmd = &mcmd->se_cmd;
590 int transl_tmr_func = 0;
591 int flags = TARGET_SCF_ACK_KREF;
592
593 switch (tmr_func) {
594 case QLA_TGT_ABTS:
595 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
596 transl_tmr_func = TMR_ABORT_TASK;
597 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
598 break;
599 case QLA_TGT_2G_ABORT_TASK:
600 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
601 transl_tmr_func = TMR_ABORT_TASK;
602 break;
603 case QLA_TGT_CLEAR_ACA:
604 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
605 transl_tmr_func = TMR_CLEAR_ACA;
606 break;
607 case QLA_TGT_TARGET_RESET:
608 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
609 transl_tmr_func = TMR_TARGET_WARM_RESET;
610 break;
611 case QLA_TGT_LUN_RESET:
612 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
613 transl_tmr_func = TMR_LUN_RESET;
614 break;
615 case QLA_TGT_CLEAR_TS:
616 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
617 transl_tmr_func = TMR_CLEAR_TASK_SET;
618 break;
619 case QLA_TGT_ABORT_TS:
620 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
621 transl_tmr_func = TMR_ABORT_TASK_SET;
622 break;
623 default:
624 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
625 sess->vha->host_no, tmr_func);
626 return -ENOSYS;
627 }
628
629 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
630 transl_tmr_func, GFP_ATOMIC, tag, flags);
631 }
632
633 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
634 {
635 struct qla_tgt_cmd *cmd = container_of(se_cmd,
636 struct qla_tgt_cmd, se_cmd);
637
638 if (cmd->aborted) {
639 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
640 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
641 * already kick start the free.
642 */
643 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
644 "transport_state %x, t_state %x, se_cmd_flags %x\n",
645 cmd, kref_read(&cmd->se_cmd.cmd_kref),
646 cmd->se_cmd.transport_state,
647 cmd->se_cmd.t_state,
648 cmd->se_cmd.se_cmd_flags);
649 return 0;
650 }
651
652 cmd->trc_flags |= TRC_XMIT_DATA;
653 cmd->bufflen = se_cmd->data_length;
654 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
655
656 cmd->sg_cnt = se_cmd->t_data_nents;
657 cmd->sg = se_cmd->t_data_sg;
658 cmd->offset = 0;
659
660 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
661 cmd->prot_sg = se_cmd->t_prot_sg;
662 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
663 se_cmd->pi_err = 0;
664
665 /*
666 * Now queue completed DATA_IN the qla2xxx LLD and response ring
667 */
668 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
669 se_cmd->scsi_status);
670 }
671
672 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
673 {
674 struct qla_tgt_cmd *cmd = container_of(se_cmd,
675 struct qla_tgt_cmd, se_cmd);
676 int xmit_type = QLA_TGT_XMIT_STATUS;
677
678 if (cmd->aborted) {
679 /*
680 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
681 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
682 * already kick start the free.
683 */
684 pr_debug(
685 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
686 cmd, kref_read(&cmd->se_cmd.cmd_kref),
687 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
688 cmd->se_cmd.se_cmd_flags);
689 return 0;
690 }
691 cmd->bufflen = se_cmd->data_length;
692 cmd->sg = NULL;
693 cmd->sg_cnt = 0;
694 cmd->offset = 0;
695 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
696 if (cmd->trc_flags & TRC_XMIT_STATUS) {
697 pr_crit("Multiple calls for status = %p.\n", cmd);
698 dump_stack();
699 }
700 cmd->trc_flags |= TRC_XMIT_STATUS;
701
702 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
703 /*
704 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
705 * for qla_tgt_xmit_response LLD code
706 */
707 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
708 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
709 se_cmd->residual_count = 0;
710 }
711 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
712 se_cmd->residual_count += se_cmd->data_length;
713
714 cmd->bufflen = 0;
715 }
716 /*
717 * Now queue status response to qla2xxx LLD code and response ring
718 */
719 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
720 }
721
722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
723 {
724 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
725 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
726 struct qla_tgt_mgmt_cmd, se_cmd);
727
728 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
729 mcmd, se_tmr->function, se_tmr->response);
730 /*
731 * Do translation between TCM TM response codes and
732 * QLA2xxx FC TM response codes.
733 */
734 switch (se_tmr->response) {
735 case TMR_FUNCTION_COMPLETE:
736 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
737 break;
738 case TMR_TASK_DOES_NOT_EXIST:
739 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
740 break;
741 case TMR_FUNCTION_REJECTED:
742 mcmd->fc_tm_rsp = FC_TM_REJECT;
743 break;
744 case TMR_LUN_DOES_NOT_EXIST:
745 default:
746 mcmd->fc_tm_rsp = FC_TM_FAILED;
747 break;
748 }
749 /*
750 * Queue the TM response to QLA2xxx LLD to build a
751 * CTIO response packet.
752 */
753 qlt_xmit_tm_rsp(mcmd);
754 }
755
756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
757 {
758 struct qla_tgt_cmd *cmd = container_of(se_cmd,
759 struct qla_tgt_cmd, se_cmd);
760
761 if (qlt_abort_cmd(cmd))
762 return;
763 }
764
765 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
766 struct tcm_qla2xxx_nacl *, struct fc_port *);
767 /*
768 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
769 */
770 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
771 {
772 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
773 struct se_portal_group *se_tpg = se_nacl->se_tpg;
774 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
775 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
776 struct tcm_qla2xxx_lport, lport_wwn);
777 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
778 struct tcm_qla2xxx_nacl, se_node_acl);
779 void *node;
780
781 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
782
783 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
784 if (WARN_ON(node && (node != se_nacl))) {
785 /*
786 * The nacl no longer matches what we think it should be.
787 * Most likely a new dynamic acl has been added while
788 * someone dropped the hardware lock. It clearly is a
789 * bug elsewhere, but this bit can't make things worse.
790 */
791 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
792 node, GFP_ATOMIC);
793 }
794
795 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
796 se_nacl, nacl->nport_wwnn, nacl->nport_id);
797 /*
798 * Now clear the se_nacl and session pointers from our HW lport lookup
799 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
800 *
801 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
802 * target_wait_for_sess_cmds() before the session waits for outstanding
803 * I/O to complete, to avoid a race between session shutdown execution
804 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
805 */
806 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
807 }
808
809 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
810 {
811 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
812 target_sess_cmd_list_set_waiting(sess->se_sess);
813 }
814
815 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
816 const char *name)
817 {
818 struct tcm_qla2xxx_nacl *nacl =
819 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
820 u64 wwnn;
821
822 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
823 return -EINVAL;
824
825 nacl->nport_wwnn = wwnn;
826 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
827
828 return 0;
829 }
830
831 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
832
833 #define DEF_QLA_TPG_ATTRIB(name) \
834 \
835 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
836 struct config_item *item, char *page) \
837 { \
838 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
839 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
840 struct tcm_qla2xxx_tpg, se_tpg); \
841 \
842 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
843 } \
844 \
845 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
846 struct config_item *item, const char *page, size_t count) \
847 { \
848 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
849 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
850 struct tcm_qla2xxx_tpg, se_tpg); \
851 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
852 unsigned long val; \
853 int ret; \
854 \
855 ret = kstrtoul(page, 0, &val); \
856 if (ret < 0) { \
857 pr_err("kstrtoul() failed with" \
858 " ret: %d\n", ret); \
859 return -EINVAL; \
860 } \
861 \
862 if ((val != 0) && (val != 1)) { \
863 pr_err("Illegal boolean value %lu\n", val); \
864 return -EINVAL; \
865 } \
866 \
867 a->name = val; \
868 \
869 return count; \
870 } \
871 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
872
873 DEF_QLA_TPG_ATTRIB(generate_node_acls);
874 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
875 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
876 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
877 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
878 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
879 DEF_QLA_TPG_ATTRIB(jam_host);
880 #endif
881
882 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
883 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
884 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
885 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
886 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
887 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
888 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
889 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
890 #endif
891 NULL,
892 };
893
894 /* End items for tcm_qla2xxx_tpg_attrib_cit */
895
896 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
897 char *page)
898 {
899 struct se_portal_group *se_tpg = to_tpg(item);
900 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
901 struct tcm_qla2xxx_tpg, se_tpg);
902
903 return snprintf(page, PAGE_SIZE, "%d\n",
904 atomic_read(&tpg->lport_tpg_enabled));
905 }
906
907 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
908 {
909 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
910 struct tcm_qla2xxx_tpg, tpg_base_work);
911 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
912 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
913
914 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
915 atomic_set(&base_tpg->lport_tpg_enabled, 1);
916 qlt_enable_vha(base_vha);
917 }
918 complete(&base_tpg->tpg_base_comp);
919 }
920
921 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
922 {
923 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
924 struct tcm_qla2xxx_tpg, tpg_base_work);
925 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
926 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
927
928 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
929 atomic_set(&base_tpg->lport_tpg_enabled, 0);
930 target_undepend_item(&se_tpg->tpg_group.cg_item);
931 }
932 complete(&base_tpg->tpg_base_comp);
933 }
934
935 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
936 const char *page, size_t count)
937 {
938 struct se_portal_group *se_tpg = to_tpg(item);
939 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
940 struct tcm_qla2xxx_tpg, se_tpg);
941 unsigned long op;
942 int rc;
943
944 rc = kstrtoul(page, 0, &op);
945 if (rc < 0) {
946 pr_err("kstrtoul() returned %d\n", rc);
947 return -EINVAL;
948 }
949 if ((op != 1) && (op != 0)) {
950 pr_err("Illegal value for tpg_enable: %lu\n", op);
951 return -EINVAL;
952 }
953 if (op) {
954 if (atomic_read(&tpg->lport_tpg_enabled))
955 return -EEXIST;
956
957 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
958 } else {
959 if (!atomic_read(&tpg->lport_tpg_enabled))
960 return count;
961
962 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
963 }
964 init_completion(&tpg->tpg_base_comp);
965 schedule_work(&tpg->tpg_base_work);
966 wait_for_completion(&tpg->tpg_base_comp);
967
968 if (op) {
969 if (!atomic_read(&tpg->lport_tpg_enabled))
970 return -ENODEV;
971 } else {
972 if (atomic_read(&tpg->lport_tpg_enabled))
973 return -EPERM;
974 }
975 return count;
976 }
977
978 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
979 char *page)
980 {
981 return target_show_dynamic_sessions(to_tpg(item), page);
982 }
983
984 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
985 const char *page, size_t count)
986 {
987 struct se_portal_group *se_tpg = to_tpg(item);
988 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
989 struct tcm_qla2xxx_tpg, se_tpg);
990 unsigned long val;
991 int ret = kstrtoul(page, 0, &val);
992
993 if (ret) {
994 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
995 return ret;
996 }
997 if (val != 0 && val != 1 && val != 3) {
998 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
999 return -EINVAL;
1000 }
1001 tpg->tpg_attrib.fabric_prot_type = val;
1002
1003 return count;
1004 }
1005
1006 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
1007 char *page)
1008 {
1009 struct se_portal_group *se_tpg = to_tpg(item);
1010 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1011 struct tcm_qla2xxx_tpg, se_tpg);
1012
1013 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1014 }
1015
1016 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
1017 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
1018 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
1019
1020 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1021 &tcm_qla2xxx_tpg_attr_enable,
1022 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1023 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1024 NULL,
1025 };
1026
1027 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1028 struct se_wwn *wwn,
1029 struct config_group *group,
1030 const char *name)
1031 {
1032 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1033 struct tcm_qla2xxx_lport, lport_wwn);
1034 struct tcm_qla2xxx_tpg *tpg;
1035 unsigned long tpgt;
1036 int ret;
1037
1038 if (strstr(name, "tpgt_") != name)
1039 return ERR_PTR(-EINVAL);
1040 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1041 return ERR_PTR(-EINVAL);
1042
1043 if ((tpgt != 1)) {
1044 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1045 return ERR_PTR(-ENOSYS);
1046 }
1047
1048 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1049 if (!tpg) {
1050 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1051 return ERR_PTR(-ENOMEM);
1052 }
1053 tpg->lport = lport;
1054 tpg->lport_tpgt = tpgt;
1055 /*
1056 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1057 * NodeACLs
1058 */
1059 tpg->tpg_attrib.generate_node_acls = 1;
1060 tpg->tpg_attrib.demo_mode_write_protect = 1;
1061 tpg->tpg_attrib.cache_dynamic_acls = 1;
1062 tpg->tpg_attrib.demo_mode_login_only = 1;
1063 tpg->tpg_attrib.jam_host = 0;
1064
1065 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1066 if (ret < 0) {
1067 kfree(tpg);
1068 return NULL;
1069 }
1070
1071 lport->tpg_1 = tpg;
1072
1073 return &tpg->se_tpg;
1074 }
1075
1076 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1077 {
1078 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1079 struct tcm_qla2xxx_tpg, se_tpg);
1080 struct tcm_qla2xxx_lport *lport = tpg->lport;
1081 struct scsi_qla_host *vha = lport->qla_vha;
1082 /*
1083 * Call into qla2x_target.c LLD logic to shutdown the active
1084 * FC Nexuses and disable target mode operation for this qla_hw_data
1085 */
1086 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1087 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1088
1089 core_tpg_deregister(se_tpg);
1090 /*
1091 * Clear local TPG=1 pointer for non NPIV mode.
1092 */
1093 lport->tpg_1 = NULL;
1094 kfree(tpg);
1095 }
1096
1097 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1098 char *page)
1099 {
1100 return tcm_qla2xxx_tpg_enable_show(item, page);
1101 }
1102
1103 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1104 const char *page, size_t count)
1105 {
1106 struct se_portal_group *se_tpg = to_tpg(item);
1107 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1108 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1109 struct tcm_qla2xxx_lport, lport_wwn);
1110 struct scsi_qla_host *vha = lport->qla_vha;
1111 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1112 struct tcm_qla2xxx_tpg, se_tpg);
1113 unsigned long op;
1114 int rc;
1115
1116 rc = kstrtoul(page, 0, &op);
1117 if (rc < 0) {
1118 pr_err("kstrtoul() returned %d\n", rc);
1119 return -EINVAL;
1120 }
1121 if ((op != 1) && (op != 0)) {
1122 pr_err("Illegal value for tpg_enable: %lu\n", op);
1123 return -EINVAL;
1124 }
1125 if (op) {
1126 if (atomic_read(&tpg->lport_tpg_enabled))
1127 return -EEXIST;
1128
1129 atomic_set(&tpg->lport_tpg_enabled, 1);
1130 qlt_enable_vha(vha);
1131 } else {
1132 if (!atomic_read(&tpg->lport_tpg_enabled))
1133 return count;
1134
1135 atomic_set(&tpg->lport_tpg_enabled, 0);
1136 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1137 }
1138
1139 return count;
1140 }
1141
1142 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1143
1144 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1145 &tcm_qla2xxx_npiv_tpg_attr_enable,
1146 NULL,
1147 };
1148
1149 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1150 struct se_wwn *wwn,
1151 struct config_group *group,
1152 const char *name)
1153 {
1154 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1155 struct tcm_qla2xxx_lport, lport_wwn);
1156 struct tcm_qla2xxx_tpg *tpg;
1157 unsigned long tpgt;
1158 int ret;
1159
1160 if (strstr(name, "tpgt_") != name)
1161 return ERR_PTR(-EINVAL);
1162 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1163 return ERR_PTR(-EINVAL);
1164
1165 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1166 if (!tpg) {
1167 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1168 return ERR_PTR(-ENOMEM);
1169 }
1170 tpg->lport = lport;
1171 tpg->lport_tpgt = tpgt;
1172
1173 /*
1174 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1175 * NodeACLs
1176 */
1177 tpg->tpg_attrib.generate_node_acls = 1;
1178 tpg->tpg_attrib.demo_mode_write_protect = 1;
1179 tpg->tpg_attrib.cache_dynamic_acls = 1;
1180 tpg->tpg_attrib.demo_mode_login_only = 1;
1181
1182 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1183 if (ret < 0) {
1184 kfree(tpg);
1185 return NULL;
1186 }
1187 lport->tpg_1 = tpg;
1188 return &tpg->se_tpg;
1189 }
1190
1191 /*
1192 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1193 */
1194 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(
1195 scsi_qla_host_t *vha,
1196 const uint8_t *s_id)
1197 {
1198 struct tcm_qla2xxx_lport *lport;
1199 struct se_node_acl *se_nacl;
1200 struct tcm_qla2xxx_nacl *nacl;
1201 u32 key;
1202
1203 lport = vha->vha_tgt.target_lport_ptr;
1204 if (!lport) {
1205 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1206 dump_stack();
1207 return NULL;
1208 }
1209
1210 key = sid_to_key(s_id);
1211 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1212
1213 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1214 if (!se_nacl) {
1215 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1216 return NULL;
1217 }
1218 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1219 se_nacl, se_nacl->initiatorname);
1220
1221 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1222 if (!nacl->fc_port) {
1223 pr_err("Unable to locate struct fc_port\n");
1224 return NULL;
1225 }
1226
1227 return nacl->fc_port;
1228 }
1229
1230 /*
1231 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1232 */
1233 static void tcm_qla2xxx_set_sess_by_s_id(
1234 struct tcm_qla2xxx_lport *lport,
1235 struct se_node_acl *new_se_nacl,
1236 struct tcm_qla2xxx_nacl *nacl,
1237 struct se_session *se_sess,
1238 struct fc_port *fc_port,
1239 uint8_t *s_id)
1240 {
1241 u32 key;
1242 void *slot;
1243 int rc;
1244
1245 key = sid_to_key(s_id);
1246 pr_debug("set_sess_by_s_id: %06x\n", key);
1247
1248 slot = btree_lookup32(&lport->lport_fcport_map, key);
1249 if (!slot) {
1250 if (new_se_nacl) {
1251 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1252 nacl->nport_id = key;
1253 rc = btree_insert32(&lport->lport_fcport_map, key,
1254 new_se_nacl, GFP_ATOMIC);
1255 if (rc)
1256 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1257 (int)key);
1258 } else {
1259 pr_debug("Wiping nonexisting fc_port entry\n");
1260 }
1261
1262 fc_port->se_sess = se_sess;
1263 nacl->fc_port = fc_port;
1264 return;
1265 }
1266
1267 if (nacl->fc_port) {
1268 if (new_se_nacl == NULL) {
1269 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1270 btree_remove32(&lport->lport_fcport_map, key);
1271 nacl->fc_port = NULL;
1272 return;
1273 }
1274 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1275 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1276 fc_port->se_sess = se_sess;
1277 nacl->fc_port = fc_port;
1278 return;
1279 }
1280
1281 if (new_se_nacl == NULL) {
1282 pr_debug("Clearing existing fc_port entry\n");
1283 btree_remove32(&lport->lport_fcport_map, key);
1284 return;
1285 }
1286
1287 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1288 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1289 fc_port->se_sess = se_sess;
1290 nacl->fc_port = fc_port;
1291
1292 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1293 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1294 }
1295
1296 /*
1297 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1298 */
1299 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1300 scsi_qla_host_t *vha,
1301 const uint16_t loop_id)
1302 {
1303 struct tcm_qla2xxx_lport *lport;
1304 struct se_node_acl *se_nacl;
1305 struct tcm_qla2xxx_nacl *nacl;
1306 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1307
1308 lport = vha->vha_tgt.target_lport_ptr;
1309 if (!lport) {
1310 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1311 dump_stack();
1312 return NULL;
1313 }
1314
1315 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1316
1317 fc_loopid = lport->lport_loopid_map + loop_id;
1318 se_nacl = fc_loopid->se_nacl;
1319 if (!se_nacl) {
1320 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1321 loop_id);
1322 return NULL;
1323 }
1324
1325 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1326
1327 if (!nacl->fc_port) {
1328 pr_err("Unable to locate struct fc_port\n");
1329 return NULL;
1330 }
1331
1332 return nacl->fc_port;
1333 }
1334
1335 /*
1336 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1337 */
1338 static void tcm_qla2xxx_set_sess_by_loop_id(
1339 struct tcm_qla2xxx_lport *lport,
1340 struct se_node_acl *new_se_nacl,
1341 struct tcm_qla2xxx_nacl *nacl,
1342 struct se_session *se_sess,
1343 struct fc_port *fc_port,
1344 uint16_t loop_id)
1345 {
1346 struct se_node_acl *saved_nacl;
1347 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1348
1349 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1350
1351 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1352 lport->lport_loopid_map)[loop_id];
1353
1354 saved_nacl = fc_loopid->se_nacl;
1355 if (!saved_nacl) {
1356 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1357 fc_loopid->se_nacl = new_se_nacl;
1358 if (fc_port->se_sess != se_sess)
1359 fc_port->se_sess = se_sess;
1360 if (nacl->fc_port != fc_port)
1361 nacl->fc_port = fc_port;
1362 return;
1363 }
1364
1365 if (nacl->fc_port) {
1366 if (new_se_nacl == NULL) {
1367 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1368 fc_loopid->se_nacl = NULL;
1369 nacl->fc_port = NULL;
1370 return;
1371 }
1372
1373 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1374 fc_loopid->se_nacl = new_se_nacl;
1375 if (fc_port->se_sess != se_sess)
1376 fc_port->se_sess = se_sess;
1377 if (nacl->fc_port != fc_port)
1378 nacl->fc_port = fc_port;
1379 return;
1380 }
1381
1382 if (new_se_nacl == NULL) {
1383 pr_debug("Clearing fc_loopid->se_nacl\n");
1384 fc_loopid->se_nacl = NULL;
1385 return;
1386 }
1387
1388 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1389 fc_loopid->se_nacl = new_se_nacl;
1390 if (fc_port->se_sess != se_sess)
1391 fc_port->se_sess = se_sess;
1392 if (nacl->fc_port != fc_port)
1393 nacl->fc_port = fc_port;
1394
1395 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1396 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1397 }
1398
1399 /*
1400 * Should always be called with qla_hw_data->tgt.sess_lock held.
1401 */
1402 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1403 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1404 {
1405 struct se_session *se_sess = sess->se_sess;
1406 unsigned char be_sid[3];
1407
1408 be_sid[0] = sess->d_id.b.domain;
1409 be_sid[1] = sess->d_id.b.area;
1410 be_sid[2] = sess->d_id.b.al_pa;
1411
1412 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1413 sess, be_sid);
1414 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1415 sess, sess->loop_id);
1416 }
1417
1418 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1419 {
1420 struct qla_tgt *tgt = sess->tgt;
1421 struct qla_hw_data *ha = tgt->ha;
1422 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1423 struct se_session *se_sess;
1424 struct tcm_qla2xxx_lport *lport;
1425
1426 BUG_ON(in_interrupt());
1427
1428 se_sess = sess->se_sess;
1429 if (!se_sess) {
1430 pr_err("struct fc_port->se_sess is NULL\n");
1431 dump_stack();
1432 return;
1433 }
1434
1435 lport = vha->vha_tgt.target_lport_ptr;
1436 if (!lport) {
1437 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1438 dump_stack();
1439 return;
1440 }
1441 target_wait_for_sess_cmds(se_sess);
1442
1443 transport_deregister_session_configfs(sess->se_sess);
1444 transport_deregister_session(sess->se_sess);
1445 }
1446
1447 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1448 struct se_session *se_sess, void *p)
1449 {
1450 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1451 struct tcm_qla2xxx_tpg, se_tpg);
1452 struct tcm_qla2xxx_lport *lport = tpg->lport;
1453 struct qla_hw_data *ha = lport->qla_vha->hw;
1454 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1455 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1456 struct tcm_qla2xxx_nacl, se_node_acl);
1457 struct fc_port *qlat_sess = p;
1458 uint16_t loop_id = qlat_sess->loop_id;
1459 unsigned long flags;
1460 unsigned char be_sid[3];
1461
1462 be_sid[0] = qlat_sess->d_id.b.domain;
1463 be_sid[1] = qlat_sess->d_id.b.area;
1464 be_sid[2] = qlat_sess->d_id.b.al_pa;
1465
1466 /*
1467 * And now setup se_nacl and session pointers into HW lport internal
1468 * mappings for fabric S_ID and LOOP_ID.
1469 */
1470 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1471 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1472 se_sess, qlat_sess, be_sid);
1473 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1474 se_sess, qlat_sess, loop_id);
1475 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1476
1477 return 0;
1478 }
1479
1480 /*
1481 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1482 * to locate struct se_node_acl
1483 */
1484 static int tcm_qla2xxx_check_initiator_node_acl(
1485 scsi_qla_host_t *vha,
1486 unsigned char *fc_wwpn,
1487 struct fc_port *qlat_sess)
1488 {
1489 struct qla_hw_data *ha = vha->hw;
1490 struct tcm_qla2xxx_lport *lport;
1491 struct tcm_qla2xxx_tpg *tpg;
1492 struct se_session *se_sess;
1493 unsigned char port_name[36];
1494 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1495 TCM_QLA2XXX_DEFAULT_TAGS;
1496
1497 lport = vha->vha_tgt.target_lport_ptr;
1498 if (!lport) {
1499 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1500 dump_stack();
1501 return -EINVAL;
1502 }
1503 /*
1504 * Locate the TPG=1 reference..
1505 */
1506 tpg = lport->tpg_1;
1507 if (!tpg) {
1508 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1509 return -EINVAL;
1510 }
1511 /*
1512 * Format the FCP Initiator port_name into colon seperated values to
1513 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1514 */
1515 memset(&port_name, 0, 36);
1516 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1517 /*
1518 * Locate our struct se_node_acl either from an explict NodeACL created
1519 * via ConfigFS, or via running in TPG demo mode.
1520 */
1521 se_sess = target_alloc_session(&tpg->se_tpg, num_tags,
1522 sizeof(struct qla_tgt_cmd),
1523 TARGET_PROT_ALL, port_name,
1524 qlat_sess, tcm_qla2xxx_session_cb);
1525 if (IS_ERR(se_sess))
1526 return PTR_ERR(se_sess);
1527
1528 return 0;
1529 }
1530
1531 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1532 uint16_t loop_id, bool conf_compl_supported)
1533 {
1534 struct qla_tgt *tgt = sess->tgt;
1535 struct qla_hw_data *ha = tgt->ha;
1536 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1537 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1538 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1539 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1540 struct tcm_qla2xxx_nacl, se_node_acl);
1541 u32 key;
1542
1543
1544 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1545 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1546 sess, sess->port_name,
1547 sess->loop_id, loop_id, sess->d_id.b.domain,
1548 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1549 s_id.b.area, s_id.b.al_pa);
1550
1551 if (sess->loop_id != loop_id) {
1552 /*
1553 * Because we can shuffle loop IDs around and we
1554 * update different sessions non-atomically, we might
1555 * have overwritten this session's old loop ID
1556 * already, and we might end up overwriting some other
1557 * session that will be updated later. So we have to
1558 * be extra careful and we can't warn about those things...
1559 */
1560 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1561 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1562
1563 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1564
1565 sess->loop_id = loop_id;
1566 }
1567
1568 if (sess->d_id.b24 != s_id.b24) {
1569 key = (((u32) sess->d_id.b.domain << 16) |
1570 ((u32) sess->d_id.b.area << 8) |
1571 ((u32) sess->d_id.b.al_pa));
1572
1573 if (btree_lookup32(&lport->lport_fcport_map, key))
1574 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1575 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1576 sess->d_id.b.domain, sess->d_id.b.area,
1577 sess->d_id.b.al_pa);
1578 else
1579 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1580 sess->d_id.b.domain, sess->d_id.b.area,
1581 sess->d_id.b.al_pa);
1582
1583 key = (((u32) s_id.b.domain << 16) |
1584 ((u32) s_id.b.area << 8) |
1585 ((u32) s_id.b.al_pa));
1586
1587 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1588 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1589 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1590 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1591 } else {
1592 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1593 GFP_ATOMIC);
1594 }
1595
1596 sess->d_id = s_id;
1597 nacl->nport_id = key;
1598 }
1599
1600 sess->conf_compl_supported = conf_compl_supported;
1601
1602 /* Reset logout parameters to default */
1603 sess->logout_on_delete = 1;
1604 sess->keep_nport_handle = 0;
1605 }
1606
1607 /*
1608 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1609 */
1610 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1611 .handle_cmd = tcm_qla2xxx_handle_cmd,
1612 .handle_data = tcm_qla2xxx_handle_data,
1613 .handle_tmr = tcm_qla2xxx_handle_tmr,
1614 .free_cmd = tcm_qla2xxx_free_cmd,
1615 .free_mcmd = tcm_qla2xxx_free_mcmd,
1616 .free_session = tcm_qla2xxx_free_session,
1617 .update_sess = tcm_qla2xxx_update_sess,
1618 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1619 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1620 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1621 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1622 .put_sess = tcm_qla2xxx_put_sess,
1623 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1624 .get_dif_tags = tcm_qla2xxx_dif_tags,
1625 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1626 };
1627
1628 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1629 {
1630 int rc;
1631
1632 rc = btree_init32(&lport->lport_fcport_map);
1633 if (rc) {
1634 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1635 return rc;
1636 }
1637
1638 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1639 65536);
1640 if (!lport->lport_loopid_map) {
1641 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1642 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1643 btree_destroy32(&lport->lport_fcport_map);
1644 return -ENOMEM;
1645 }
1646 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1647 * 65536);
1648 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1649 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1650 return 0;
1651 }
1652
1653 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1654 void *target_lport_ptr,
1655 u64 npiv_wwpn, u64 npiv_wwnn)
1656 {
1657 struct qla_hw_data *ha = vha->hw;
1658 struct tcm_qla2xxx_lport *lport =
1659 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1660 /*
1661 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1662 */
1663 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1664 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1665 lport->qla_vha = vha;
1666
1667 return 0;
1668 }
1669
1670 static struct se_wwn *tcm_qla2xxx_make_lport(
1671 struct target_fabric_configfs *tf,
1672 struct config_group *group,
1673 const char *name)
1674 {
1675 struct tcm_qla2xxx_lport *lport;
1676 u64 wwpn;
1677 int ret = -ENODEV;
1678
1679 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1680 return ERR_PTR(-EINVAL);
1681
1682 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1683 if (!lport) {
1684 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1685 return ERR_PTR(-ENOMEM);
1686 }
1687 lport->lport_wwpn = wwpn;
1688 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1689 wwpn);
1690 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1691
1692 ret = tcm_qla2xxx_init_lport(lport);
1693 if (ret != 0)
1694 goto out;
1695
1696 ret = qlt_lport_register(lport, wwpn, 0, 0,
1697 tcm_qla2xxx_lport_register_cb);
1698 if (ret != 0)
1699 goto out_lport;
1700
1701 return &lport->lport_wwn;
1702 out_lport:
1703 vfree(lport->lport_loopid_map);
1704 btree_destroy32(&lport->lport_fcport_map);
1705 out:
1706 kfree(lport);
1707 return ERR_PTR(ret);
1708 }
1709
1710 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1711 {
1712 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1713 struct tcm_qla2xxx_lport, lport_wwn);
1714 struct scsi_qla_host *vha = lport->qla_vha;
1715 struct se_node_acl *node;
1716 u32 key = 0;
1717
1718 /*
1719 * Call into qla2x_target.c LLD logic to complete the
1720 * shutdown of struct qla_tgt after the call to
1721 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1722 */
1723 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1724 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1725
1726 qlt_lport_deregister(vha);
1727
1728 vfree(lport->lport_loopid_map);
1729 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1730 btree_remove32(&lport->lport_fcport_map, key);
1731 btree_destroy32(&lport->lport_fcport_map);
1732 kfree(lport);
1733 }
1734
1735 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1736 void *target_lport_ptr,
1737 u64 npiv_wwpn, u64 npiv_wwnn)
1738 {
1739 struct fc_vport *vport;
1740 struct Scsi_Host *sh = base_vha->host;
1741 struct scsi_qla_host *npiv_vha;
1742 struct tcm_qla2xxx_lport *lport =
1743 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1744 struct tcm_qla2xxx_lport *base_lport =
1745 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1746 struct fc_vport_identifiers vport_id;
1747
1748 if (qla_ini_mode_enabled(base_vha)) {
1749 pr_err("qla2xxx base_vha not enabled for target mode\n");
1750 return -EPERM;
1751 }
1752
1753 if (!base_lport || !base_lport->tpg_1 ||
1754 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1755 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1756 return -EPERM;
1757 }
1758
1759 memset(&vport_id, 0, sizeof(vport_id));
1760 vport_id.port_name = npiv_wwpn;
1761 vport_id.node_name = npiv_wwnn;
1762 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1763 vport_id.vport_type = FC_PORTTYPE_NPIV;
1764 vport_id.disable = false;
1765
1766 vport = fc_vport_create(sh, 0, &vport_id);
1767 if (!vport) {
1768 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1769 return -ENODEV;
1770 }
1771 /*
1772 * Setup local pointer to NPIV vhba + target_lport_ptr
1773 */
1774 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1775 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1776 lport->qla_vha = npiv_vha;
1777 scsi_host_get(npiv_vha->host);
1778 return 0;
1779 }
1780
1781
1782 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1783 struct target_fabric_configfs *tf,
1784 struct config_group *group,
1785 const char *name)
1786 {
1787 struct tcm_qla2xxx_lport *lport;
1788 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1789 char *p, tmp[128];
1790 int ret;
1791
1792 snprintf(tmp, 128, "%s", name);
1793
1794 p = strchr(tmp, '@');
1795 if (!p) {
1796 pr_err("Unable to locate NPIV '@' separator\n");
1797 return ERR_PTR(-EINVAL);
1798 }
1799 *p++ = '\0';
1800
1801 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1802 return ERR_PTR(-EINVAL);
1803
1804 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1805 &npiv_wwpn, &npiv_wwnn) < 0)
1806 return ERR_PTR(-EINVAL);
1807
1808 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1809 if (!lport) {
1810 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1811 return ERR_PTR(-ENOMEM);
1812 }
1813 lport->lport_npiv_wwpn = npiv_wwpn;
1814 lport->lport_npiv_wwnn = npiv_wwnn;
1815 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1816
1817 ret = tcm_qla2xxx_init_lport(lport);
1818 if (ret != 0)
1819 goto out;
1820
1821 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1822 tcm_qla2xxx_lport_register_npiv_cb);
1823 if (ret != 0)
1824 goto out_lport;
1825
1826 return &lport->lport_wwn;
1827 out_lport:
1828 vfree(lport->lport_loopid_map);
1829 btree_destroy32(&lport->lport_fcport_map);
1830 out:
1831 kfree(lport);
1832 return ERR_PTR(ret);
1833 }
1834
1835 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1836 {
1837 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1838 struct tcm_qla2xxx_lport, lport_wwn);
1839 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1840 struct qla_hw_data *ha = npiv_vha->hw;
1841 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1842
1843 scsi_host_put(npiv_vha->host);
1844 /*
1845 * Notify libfc that we want to release the vha->fc_vport
1846 */
1847 fc_vport_terminate(npiv_vha->fc_vport);
1848 scsi_host_put(base_vha->host);
1849 kfree(lport);
1850 }
1851
1852
1853 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1854 char *page)
1855 {
1856 return sprintf(page,
1857 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1858 QLA2XXX_VERSION, utsname()->sysname,
1859 utsname()->machine, utsname()->release);
1860 }
1861
1862 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1863
1864 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1865 &tcm_qla2xxx_wwn_attr_version,
1866 NULL,
1867 };
1868
1869 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1870 .module = THIS_MODULE,
1871 .name = "qla2xxx",
1872 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1873 /*
1874 * XXX: Limit assumes single page per scatter-gather-list entry.
1875 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1876 */
1877 .max_data_sg_nents = 1200,
1878 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1879 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1880 .tpg_get_tag = tcm_qla2xxx_get_tag,
1881 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1882 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1883 .tpg_check_demo_mode_write_protect =
1884 tcm_qla2xxx_check_demo_write_protect,
1885 .tpg_check_prod_mode_write_protect =
1886 tcm_qla2xxx_check_prod_write_protect,
1887 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1888 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1889 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1890 .check_stop_free = tcm_qla2xxx_check_stop_free,
1891 .release_cmd = tcm_qla2xxx_release_cmd,
1892 .close_session = tcm_qla2xxx_close_session,
1893 .sess_get_index = tcm_qla2xxx_sess_get_index,
1894 .sess_get_initiator_sid = NULL,
1895 .write_pending = tcm_qla2xxx_write_pending,
1896 .write_pending_status = tcm_qla2xxx_write_pending_status,
1897 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1898 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1899 .queue_data_in = tcm_qla2xxx_queue_data_in,
1900 .queue_status = tcm_qla2xxx_queue_status,
1901 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1902 .aborted_task = tcm_qla2xxx_aborted_task,
1903 /*
1904 * Setup function pointers for generic logic in
1905 * target_core_fabric_configfs.c
1906 */
1907 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1908 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1909 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1910 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1911 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1912
1913 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1914 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1915 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1916 };
1917
1918 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1919 .module = THIS_MODULE,
1920 .name = "qla2xxx_npiv",
1921 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1922 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1923 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1924 .tpg_get_tag = tcm_qla2xxx_get_tag,
1925 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1926 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1927 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1928 .tpg_check_prod_mode_write_protect =
1929 tcm_qla2xxx_check_prod_write_protect,
1930 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1931 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1932 .check_stop_free = tcm_qla2xxx_check_stop_free,
1933 .release_cmd = tcm_qla2xxx_release_cmd,
1934 .close_session = tcm_qla2xxx_close_session,
1935 .sess_get_index = tcm_qla2xxx_sess_get_index,
1936 .sess_get_initiator_sid = NULL,
1937 .write_pending = tcm_qla2xxx_write_pending,
1938 .write_pending_status = tcm_qla2xxx_write_pending_status,
1939 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1940 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1941 .queue_data_in = tcm_qla2xxx_queue_data_in,
1942 .queue_status = tcm_qla2xxx_queue_status,
1943 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1944 .aborted_task = tcm_qla2xxx_aborted_task,
1945 /*
1946 * Setup function pointers for generic logic in
1947 * target_core_fabric_configfs.c
1948 */
1949 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1950 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1951 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1952 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1953 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1954
1955 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1956 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1957 };
1958
1959 static int tcm_qla2xxx_register_configfs(void)
1960 {
1961 int ret;
1962
1963 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1964 QLA2XXX_VERSION, utsname()->sysname,
1965 utsname()->machine, utsname()->release);
1966
1967 ret = target_register_template(&tcm_qla2xxx_ops);
1968 if (ret)
1969 return ret;
1970
1971 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1972 if (ret)
1973 goto out_fabric;
1974
1975 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1976 WQ_MEM_RECLAIM, 0);
1977 if (!tcm_qla2xxx_free_wq) {
1978 ret = -ENOMEM;
1979 goto out_fabric_npiv;
1980 }
1981
1982 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1983 if (!tcm_qla2xxx_cmd_wq) {
1984 ret = -ENOMEM;
1985 goto out_free_wq;
1986 }
1987
1988 return 0;
1989
1990 out_free_wq:
1991 destroy_workqueue(tcm_qla2xxx_free_wq);
1992 out_fabric_npiv:
1993 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1994 out_fabric:
1995 target_unregister_template(&tcm_qla2xxx_ops);
1996 return ret;
1997 }
1998
1999 static void tcm_qla2xxx_deregister_configfs(void)
2000 {
2001 destroy_workqueue(tcm_qla2xxx_cmd_wq);
2002 destroy_workqueue(tcm_qla2xxx_free_wq);
2003
2004 target_unregister_template(&tcm_qla2xxx_ops);
2005 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2006 }
2007
2008 static int __init tcm_qla2xxx_init(void)
2009 {
2010 int ret;
2011
2012 ret = tcm_qla2xxx_register_configfs();
2013 if (ret < 0)
2014 return ret;
2015
2016 return 0;
2017 }
2018
2019 static void __exit tcm_qla2xxx_exit(void)
2020 {
2021 tcm_qla2xxx_deregister_configfs();
2022 }
2023
2024 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
2025 MODULE_LICENSE("GPL");
2026 module_init(tcm_qla2xxx_init);
2027 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support