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ARM: ep93xx: move timer to its own file
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blobd9a8c6084346759778c5cd8506c42d4ead19e2cc
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/vmalloc.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/kthread.h>
35 #include <linux/types.h>
36 #include <linux/string.h>
37 #include <linux/configfs.h>
38 #include <linux/ctype.h>
39 #include <asm/unaligned.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <target/target_core_base.h>
45 #include <target/target_core_fabric.h>
46 #include <target/target_core_fabric_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 static struct workqueue_struct *tcm_qla2xxx_free_wq;
54 static 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 char *tcm_qla2xxx_npiv_get_fabric_name(void)
186 {
187 return "qla2xxx_npiv";
188 }
189
190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
191 {
192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
193 struct tcm_qla2xxx_tpg, se_tpg);
194 struct tcm_qla2xxx_lport *lport = tpg->lport;
195
196 return lport->lport_naa_name;
197 }
198
199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
200 {
201 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
202 struct tcm_qla2xxx_tpg, se_tpg);
203 return tpg->lport_tpgt;
204 }
205
206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
207 {
208 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
209 struct tcm_qla2xxx_tpg, se_tpg);
210
211 return tpg->tpg_attrib.generate_node_acls;
212 }
213
214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
215 {
216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
217 struct tcm_qla2xxx_tpg, se_tpg);
218
219 return tpg->tpg_attrib.cache_dynamic_acls;
220 }
221
222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
223 {
224 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
225 struct tcm_qla2xxx_tpg, se_tpg);
226
227 return tpg->tpg_attrib.demo_mode_write_protect;
228 }
229
230 static int tcm_qla2xxx_check_prod_write_protect(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
235 return tpg->tpg_attrib.prod_mode_write_protect;
236 }
237
238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
239 {
240 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
241 struct tcm_qla2xxx_tpg, se_tpg);
242
243 return tpg->tpg_attrib.demo_mode_login_only;
244 }
245
246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
247 {
248 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
249 struct tcm_qla2xxx_tpg, se_tpg);
250
251 return tpg->tpg_attrib.fabric_prot_type;
252 }
253
254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
255 {
256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
257 struct tcm_qla2xxx_tpg, se_tpg);
258
259 return tpg->lport_tpgt;
260 }
261
262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
263 {
264 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
265 struct qla_tgt_mgmt_cmd, free_work);
266
267 transport_generic_free_cmd(&mcmd->se_cmd, 0);
268 }
269
270 /*
271 * Called from qla_target_template->free_mcmd(), and will call
272 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
273 * release callback. qla_hw_data->hardware_lock is expected to be held
274 */
275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
276 {
277 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
278 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
279 }
280
281 static void tcm_qla2xxx_complete_free(struct work_struct *work)
282 {
283 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
284
285 cmd->cmd_in_wq = 0;
286
287 WARN_ON(cmd->cmd_flags & BIT_16);
288
289 cmd->cmd_flags |= BIT_16;
290 transport_generic_free_cmd(&cmd->se_cmd, 0);
291 }
292
293 /*
294 * Called from qla_target_template->free_cmd(), and will call
295 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
296 * release callback. qla_hw_data->hardware_lock is expected to be held
297 */
298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
299 {
300 cmd->cmd_in_wq = 1;
301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
302 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
303 }
304
305 /*
306 * Called from struct target_core_fabric_ops->check_stop_free() context
307 */
308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
309 {
310 struct qla_tgt_cmd *cmd;
311
312 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
313 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
314 cmd->cmd_flags |= BIT_14;
315 }
316
317 return target_put_sess_cmd(se_cmd);
318 }
319
320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
321 * fabric descriptor @se_cmd command to release
322 */
323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
324 {
325 struct qla_tgt_cmd *cmd;
326
327 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
328 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
329 struct qla_tgt_mgmt_cmd, se_cmd);
330 qlt_free_mcmd(mcmd);
331 return;
332 }
333
334 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
335 qlt_free_cmd(cmd);
336 }
337
338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
339 {
340 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
341 struct scsi_qla_host *vha;
342 unsigned long flags;
343
344 BUG_ON(!sess);
345 vha = sess->vha;
346
347 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
348 target_sess_cmd_list_set_waiting(se_sess);
349 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
350
351 return 1;
352 }
353
354 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
355 {
356 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
357 struct scsi_qla_host *vha;
358 unsigned long flags;
359
360 BUG_ON(!sess);
361 vha = sess->vha;
362
363 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
364 qlt_unreg_sess(sess);
365 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
366 }
367
368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
369 {
370 return 0;
371 }
372
373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
374 {
375 struct qla_tgt_cmd *cmd = container_of(se_cmd,
376 struct qla_tgt_cmd, se_cmd);
377
378 cmd->bufflen = se_cmd->data_length;
379 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
380
381 cmd->sg_cnt = se_cmd->t_data_nents;
382 cmd->sg = se_cmd->t_data_sg;
383
384 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
385 cmd->prot_sg = se_cmd->t_prot_sg;
386 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
387 se_cmd->pi_err = 0;
388
389 /*
390 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
391 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
392 */
393 return qlt_rdy_to_xfer(cmd);
394 }
395
396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
397 {
398 unsigned long flags;
399 /*
400 * Check for WRITE_PENDING status to determine if we need to wait for
401 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
402 */
403 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
404 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
405 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
406 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
407 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
408 3000);
409 return 0;
410 }
411 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
412
413 return 0;
414 }
415
416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
417 {
418 return;
419 }
420
421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
422 {
423 return 0;
424 }
425
426 /*
427 * Called from process context in qla_target.c:qlt_do_work() code
428 */
429 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
430 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
431 int data_dir, int bidi)
432 {
433 struct se_cmd *se_cmd = &cmd->se_cmd;
434 struct se_session *se_sess;
435 struct qla_tgt_sess *sess;
436 int flags = TARGET_SCF_ACK_KREF;
437
438 if (bidi)
439 flags |= TARGET_SCF_BIDI_OP;
440
441 sess = cmd->sess;
442 if (!sess) {
443 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
444 return -EINVAL;
445 }
446
447 se_sess = sess->se_sess;
448 if (!se_sess) {
449 pr_err("Unable to locate active struct se_session\n");
450 return -EINVAL;
451 }
452
453 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
454 cmd->unpacked_lun, data_length, fcp_task_attr,
455 data_dir, flags);
456 }
457
458 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
459 {
460 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
461
462 /*
463 * Ensure that the complete FCP WRITE payload has been received.
464 * Otherwise return an exception via CHECK_CONDITION status.
465 */
466 cmd->cmd_in_wq = 0;
467 cmd->cmd_flags |= BIT_11;
468 if (!cmd->write_data_transferred) {
469 /*
470 * Check if se_cmd has already been aborted via LUN_RESET, and
471 * waiting upon completion in tcm_qla2xxx_write_pending_status()
472 */
473 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
474 complete(&cmd->se_cmd.t_transport_stop_comp);
475 return;
476 }
477
478 if (cmd->se_cmd.pi_err)
479 transport_generic_request_failure(&cmd->se_cmd,
480 cmd->se_cmd.pi_err);
481 else
482 transport_generic_request_failure(&cmd->se_cmd,
483 TCM_CHECK_CONDITION_ABORT_CMD);
484
485 return;
486 }
487
488 return target_execute_cmd(&cmd->se_cmd);
489 }
490
491 /*
492 * Called from qla_target.c:qlt_do_ctio_completion()
493 */
494 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
495 {
496 cmd->cmd_flags |= BIT_10;
497 cmd->cmd_in_wq = 1;
498 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
499 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
500 }
501
502 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
503 {
504 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
505
506 /* take an extra kref to prevent cmd free too early.
507 * need to wait for SCSI status/check condition to
508 * finish responding generate by transport_generic_request_failure.
509 */
510 kref_get(&cmd->se_cmd.cmd_kref);
511 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
512 }
513
514 /*
515 * Called from qla_target.c:qlt_do_ctio_completion()
516 */
517 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
518 {
519 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
520 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
521 }
522
523 /*
524 * Called from qla_target.c:qlt_issue_task_mgmt()
525 */
526 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
527 uint8_t tmr_func, uint32_t tag)
528 {
529 struct qla_tgt_sess *sess = mcmd->sess;
530 struct se_cmd *se_cmd = &mcmd->se_cmd;
531
532 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
533 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
534 }
535
536 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
537 {
538 struct qla_tgt_cmd *cmd = container_of(se_cmd,
539 struct qla_tgt_cmd, se_cmd);
540
541 cmd->cmd_flags |= BIT_4;
542 cmd->bufflen = se_cmd->data_length;
543 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
544 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
545
546 cmd->sg_cnt = se_cmd->t_data_nents;
547 cmd->sg = se_cmd->t_data_sg;
548 cmd->offset = 0;
549 cmd->cmd_flags |= BIT_3;
550
551 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
552 cmd->prot_sg = se_cmd->t_prot_sg;
553 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
554 se_cmd->pi_err = 0;
555
556 /*
557 * Now queue completed DATA_IN the qla2xxx LLD and response ring
558 */
559 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
560 se_cmd->scsi_status);
561 }
562
563 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
564 {
565 struct qla_tgt_cmd *cmd = container_of(se_cmd,
566 struct qla_tgt_cmd, se_cmd);
567 int xmit_type = QLA_TGT_XMIT_STATUS;
568
569 cmd->bufflen = se_cmd->data_length;
570 cmd->sg = NULL;
571 cmd->sg_cnt = 0;
572 cmd->offset = 0;
573 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
574 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
575 if (cmd->cmd_flags & BIT_5) {
576 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
577 dump_stack();
578 }
579 cmd->cmd_flags |= BIT_5;
580
581 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
582 /*
583 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
584 * for qla_tgt_xmit_response LLD code
585 */
586 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
587 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
588 se_cmd->residual_count = 0;
589 }
590 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
591 se_cmd->residual_count += se_cmd->data_length;
592
593 cmd->bufflen = 0;
594 }
595 /*
596 * Now queue status response to qla2xxx LLD code and response ring
597 */
598 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
599 }
600
601 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
602 {
603 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
604 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
605 struct qla_tgt_mgmt_cmd, se_cmd);
606
607 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
608 mcmd, se_tmr->function, se_tmr->response);
609 /*
610 * Do translation between TCM TM response codes and
611 * QLA2xxx FC TM response codes.
612 */
613 switch (se_tmr->response) {
614 case TMR_FUNCTION_COMPLETE:
615 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
616 break;
617 case TMR_TASK_DOES_NOT_EXIST:
618 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
619 break;
620 case TMR_FUNCTION_REJECTED:
621 mcmd->fc_tm_rsp = FC_TM_REJECT;
622 break;
623 case TMR_LUN_DOES_NOT_EXIST:
624 default:
625 mcmd->fc_tm_rsp = FC_TM_FAILED;
626 break;
627 }
628 /*
629 * Queue the TM response to QLA2xxx LLD to build a
630 * CTIO response packet.
631 */
632 qlt_xmit_tm_rsp(mcmd);
633 }
634
635 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
636 {
637 struct qla_tgt_cmd *cmd = container_of(se_cmd,
638 struct qla_tgt_cmd, se_cmd);
639 struct scsi_qla_host *vha = cmd->vha;
640 struct qla_hw_data *ha = vha->hw;
641
642 if (!cmd->sg_mapped)
643 return;
644
645 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
646 cmd->sg_mapped = 0;
647 }
648
649 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
650 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
651 /*
652 * Expected to be called with struct qla_hw_data->hardware_lock held
653 */
654 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
655 {
656 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
657 struct se_portal_group *se_tpg = se_nacl->se_tpg;
658 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
659 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
660 struct tcm_qla2xxx_lport, lport_wwn);
661 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
662 struct tcm_qla2xxx_nacl, se_node_acl);
663 void *node;
664
665 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
666
667 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
668 if (WARN_ON(node && (node != se_nacl))) {
669 /*
670 * The nacl no longer matches what we think it should be.
671 * Most likely a new dynamic acl has been added while
672 * someone dropped the hardware lock. It clearly is a
673 * bug elsewhere, but this bit can't make things worse.
674 */
675 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
676 node, GFP_ATOMIC);
677 }
678
679 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
680 se_nacl, nacl->nport_wwnn, nacl->nport_id);
681 /*
682 * Now clear the se_nacl and session pointers from our HW lport lookup
683 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
684 *
685 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
686 * target_wait_for_sess_cmds() before the session waits for outstanding
687 * I/O to complete, to avoid a race between session shutdown execution
688 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
689 */
690 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
691 }
692
693 static void tcm_qla2xxx_release_session(struct kref *kref)
694 {
695 struct se_session *se_sess = container_of(kref,
696 struct se_session, sess_kref);
697
698 qlt_unreg_sess(se_sess->fabric_sess_ptr);
699 }
700
701 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
702 {
703 if (!sess)
704 return;
705
706 assert_spin_locked(&sess->vha->hw->hardware_lock);
707 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
708 }
709
710 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
711 {
712 assert_spin_locked(&sess->vha->hw->hardware_lock);
713 target_sess_cmd_list_set_waiting(sess->se_sess);
714 }
715
716 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
717 const char *name)
718 {
719 struct tcm_qla2xxx_nacl *nacl =
720 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
721 u64 wwnn;
722
723 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
724 return -EINVAL;
725
726 nacl->nport_wwnn = wwnn;
727 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
728
729 return 0;
730 }
731
732 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
733
734 #define DEF_QLA_TPG_ATTRIB(name) \
735 \
736 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
737 struct se_portal_group *se_tpg, \
738 char *page) \
739 { \
740 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
741 struct tcm_qla2xxx_tpg, se_tpg); \
742 \
743 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
744 } \
745 \
746 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
747 struct se_portal_group *se_tpg, \
748 const char *page, \
749 size_t count) \
750 { \
751 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
752 struct tcm_qla2xxx_tpg, se_tpg); \
753 unsigned long val; \
754 int ret; \
755 \
756 ret = kstrtoul(page, 0, &val); \
757 if (ret < 0) { \
758 pr_err("kstrtoul() failed with" \
759 " ret: %d\n", ret); \
760 return -EINVAL; \
761 } \
762 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
763 \
764 return (!ret) ? count : -EINVAL; \
765 }
766
767 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
768 \
769 static int tcm_qla2xxx_set_attrib_##_name( \
770 struct tcm_qla2xxx_tpg *tpg, \
771 unsigned long val) \
772 { \
773 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
774 \
775 if ((val != 0) && (val != 1)) { \
776 pr_err("Illegal boolean value %lu\n", val); \
777 return -EINVAL; \
778 } \
779 \
780 a->_name = val; \
781 return 0; \
782 }
783
784 #define QLA_TPG_ATTR(_name, _mode) \
785 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
786
787 /*
788 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
789 */
790 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
791 DEF_QLA_TPG_ATTRIB(generate_node_acls);
792 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
793
794 /*
795 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
796 */
797 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
798 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
799 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
800
801 /*
802 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
803 */
804 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
805 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
806 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
807
808 /*
809 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
810 */
811 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
812 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
813 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
814
815 /*
816 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
817 */
818 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
819 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
820 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
821
822 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
823 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
824 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
825 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
826 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
827 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
828 NULL,
829 };
830
831 /* End items for tcm_qla2xxx_tpg_attrib_cit */
832
833 static ssize_t tcm_qla2xxx_tpg_show_enable(
834 struct se_portal_group *se_tpg,
835 char *page)
836 {
837 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
838 struct tcm_qla2xxx_tpg, se_tpg);
839
840 return snprintf(page, PAGE_SIZE, "%d\n",
841 atomic_read(&tpg->lport_tpg_enabled));
842 }
843
844 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
845 {
846 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
847 struct tcm_qla2xxx_tpg, tpg_base_work);
848 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
849 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
850
851 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
852 atomic_set(&base_tpg->lport_tpg_enabled, 1);
853 qlt_enable_vha(base_vha);
854 }
855 complete(&base_tpg->tpg_base_comp);
856 }
857
858 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
859 {
860 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
861 struct tcm_qla2xxx_tpg, tpg_base_work);
862 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
863 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
864
865 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
866 atomic_set(&base_tpg->lport_tpg_enabled, 0);
867 target_undepend_item(&se_tpg->tpg_group.cg_item);
868 }
869 complete(&base_tpg->tpg_base_comp);
870 }
871
872 static ssize_t tcm_qla2xxx_tpg_store_enable(
873 struct se_portal_group *se_tpg,
874 const char *page,
875 size_t count)
876 {
877 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
878 struct tcm_qla2xxx_tpg, se_tpg);
879 unsigned long op;
880 int rc;
881
882 rc = kstrtoul(page, 0, &op);
883 if (rc < 0) {
884 pr_err("kstrtoul() returned %d\n", rc);
885 return -EINVAL;
886 }
887 if ((op != 1) && (op != 0)) {
888 pr_err("Illegal value for tpg_enable: %lu\n", op);
889 return -EINVAL;
890 }
891 if (op) {
892 if (atomic_read(&tpg->lport_tpg_enabled))
893 return -EEXIST;
894
895 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
896 } else {
897 if (!atomic_read(&tpg->lport_tpg_enabled))
898 return count;
899
900 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
901 }
902 init_completion(&tpg->tpg_base_comp);
903 schedule_work(&tpg->tpg_base_work);
904 wait_for_completion(&tpg->tpg_base_comp);
905
906 if (op) {
907 if (!atomic_read(&tpg->lport_tpg_enabled))
908 return -ENODEV;
909 } else {
910 if (atomic_read(&tpg->lport_tpg_enabled))
911 return -EPERM;
912 }
913 return count;
914 }
915
916 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
917
918 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
919 struct se_portal_group *se_tpg,
920 char *page)
921 {
922 return target_show_dynamic_sessions(se_tpg, page);
923 }
924
925 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
926
927 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
928 struct se_portal_group *se_tpg,
929 const char *page,
930 size_t count)
931 {
932 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
933 struct tcm_qla2xxx_tpg, se_tpg);
934 unsigned long val;
935 int ret = kstrtoul(page, 0, &val);
936
937 if (ret) {
938 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
939 return ret;
940 }
941 if (val != 0 && val != 1 && val != 3) {
942 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
943 return -EINVAL;
944 }
945 tpg->tpg_attrib.fabric_prot_type = val;
946
947 return count;
948 }
949
950 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
951 struct se_portal_group *se_tpg,
952 char *page)
953 {
954 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
955 struct tcm_qla2xxx_tpg, se_tpg);
956
957 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
958 }
959 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
960
961 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
962 &tcm_qla2xxx_tpg_enable.attr,
963 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
964 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
965 NULL,
966 };
967
968 static struct se_portal_group *tcm_qla2xxx_make_tpg(
969 struct se_wwn *wwn,
970 struct config_group *group,
971 const char *name)
972 {
973 struct tcm_qla2xxx_lport *lport = container_of(wwn,
974 struct tcm_qla2xxx_lport, lport_wwn);
975 struct tcm_qla2xxx_tpg *tpg;
976 unsigned long tpgt;
977 int ret;
978
979 if (strstr(name, "tpgt_") != name)
980 return ERR_PTR(-EINVAL);
981 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
982 return ERR_PTR(-EINVAL);
983
984 if ((tpgt != 1)) {
985 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
986 return ERR_PTR(-ENOSYS);
987 }
988
989 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
990 if (!tpg) {
991 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
992 return ERR_PTR(-ENOMEM);
993 }
994 tpg->lport = lport;
995 tpg->lport_tpgt = tpgt;
996 /*
997 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
998 * NodeACLs
999 */
1000 tpg->tpg_attrib.generate_node_acls = 1;
1001 tpg->tpg_attrib.demo_mode_write_protect = 1;
1002 tpg->tpg_attrib.cache_dynamic_acls = 1;
1003 tpg->tpg_attrib.demo_mode_login_only = 1;
1004
1005 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1006 if (ret < 0) {
1007 kfree(tpg);
1008 return NULL;
1009 }
1010
1011 lport->tpg_1 = tpg;
1012
1013 return &tpg->se_tpg;
1014 }
1015
1016 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1017 {
1018 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1019 struct tcm_qla2xxx_tpg, se_tpg);
1020 struct tcm_qla2xxx_lport *lport = tpg->lport;
1021 struct scsi_qla_host *vha = lport->qla_vha;
1022 /*
1023 * Call into qla2x_target.c LLD logic to shutdown the active
1024 * FC Nexuses and disable target mode operation for this qla_hw_data
1025 */
1026 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1027 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1028
1029 core_tpg_deregister(se_tpg);
1030 /*
1031 * Clear local TPG=1 pointer for non NPIV mode.
1032 */
1033 lport->tpg_1 = NULL;
1034 kfree(tpg);
1035 }
1036
1037 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1038 struct se_portal_group *se_tpg,
1039 char *page)
1040 {
1041 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1042 }
1043
1044 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1045 struct se_portal_group *se_tpg,
1046 const char *page,
1047 size_t count)
1048 {
1049 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1050 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1051 struct tcm_qla2xxx_lport, lport_wwn);
1052 struct scsi_qla_host *vha = lport->qla_vha;
1053 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1054 struct tcm_qla2xxx_tpg, se_tpg);
1055 unsigned long op;
1056 int rc;
1057
1058 rc = kstrtoul(page, 0, &op);
1059 if (rc < 0) {
1060 pr_err("kstrtoul() returned %d\n", rc);
1061 return -EINVAL;
1062 }
1063 if ((op != 1) && (op != 0)) {
1064 pr_err("Illegal value for tpg_enable: %lu\n", op);
1065 return -EINVAL;
1066 }
1067 if (op) {
1068 if (atomic_read(&tpg->lport_tpg_enabled))
1069 return -EEXIST;
1070
1071 atomic_set(&tpg->lport_tpg_enabled, 1);
1072 qlt_enable_vha(vha);
1073 } else {
1074 if (!atomic_read(&tpg->lport_tpg_enabled))
1075 return count;
1076
1077 atomic_set(&tpg->lport_tpg_enabled, 0);
1078 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1079 }
1080
1081 return count;
1082 }
1083
1084 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1085
1086 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1087 &tcm_qla2xxx_npiv_tpg_enable.attr,
1088 NULL,
1089 };
1090
1091 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1092 struct se_wwn *wwn,
1093 struct config_group *group,
1094 const char *name)
1095 {
1096 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1097 struct tcm_qla2xxx_lport, lport_wwn);
1098 struct tcm_qla2xxx_tpg *tpg;
1099 unsigned long tpgt;
1100 int ret;
1101
1102 if (strstr(name, "tpgt_") != name)
1103 return ERR_PTR(-EINVAL);
1104 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1105 return ERR_PTR(-EINVAL);
1106
1107 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1108 if (!tpg) {
1109 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1110 return ERR_PTR(-ENOMEM);
1111 }
1112 tpg->lport = lport;
1113 tpg->lport_tpgt = tpgt;
1114
1115 /*
1116 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1117 * NodeACLs
1118 */
1119 tpg->tpg_attrib.generate_node_acls = 1;
1120 tpg->tpg_attrib.demo_mode_write_protect = 1;
1121 tpg->tpg_attrib.cache_dynamic_acls = 1;
1122 tpg->tpg_attrib.demo_mode_login_only = 1;
1123
1124 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1125 if (ret < 0) {
1126 kfree(tpg);
1127 return NULL;
1128 }
1129 lport->tpg_1 = tpg;
1130 return &tpg->se_tpg;
1131 }
1132
1133 /*
1134 * Expected to be called with struct qla_hw_data->hardware_lock held
1135 */
1136 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1137 scsi_qla_host_t *vha,
1138 const uint8_t *s_id)
1139 {
1140 struct tcm_qla2xxx_lport *lport;
1141 struct se_node_acl *se_nacl;
1142 struct tcm_qla2xxx_nacl *nacl;
1143 u32 key;
1144
1145 lport = vha->vha_tgt.target_lport_ptr;
1146 if (!lport) {
1147 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1148 dump_stack();
1149 return NULL;
1150 }
1151
1152 key = (((unsigned long)s_id[0] << 16) |
1153 ((unsigned long)s_id[1] << 8) |
1154 (unsigned long)s_id[2]);
1155 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1156
1157 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1158 if (!se_nacl) {
1159 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1160 return NULL;
1161 }
1162 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1163 se_nacl, se_nacl->initiatorname);
1164
1165 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1166 if (!nacl->qla_tgt_sess) {
1167 pr_err("Unable to locate struct qla_tgt_sess\n");
1168 return NULL;
1169 }
1170
1171 return nacl->qla_tgt_sess;
1172 }
1173
1174 /*
1175 * Expected to be called with struct qla_hw_data->hardware_lock held
1176 */
1177 static void tcm_qla2xxx_set_sess_by_s_id(
1178 struct tcm_qla2xxx_lport *lport,
1179 struct se_node_acl *new_se_nacl,
1180 struct tcm_qla2xxx_nacl *nacl,
1181 struct se_session *se_sess,
1182 struct qla_tgt_sess *qla_tgt_sess,
1183 uint8_t *s_id)
1184 {
1185 u32 key;
1186 void *slot;
1187 int rc;
1188
1189 key = (((unsigned long)s_id[0] << 16) |
1190 ((unsigned long)s_id[1] << 8) |
1191 (unsigned long)s_id[2]);
1192 pr_debug("set_sess_by_s_id: %06x\n", key);
1193
1194 slot = btree_lookup32(&lport->lport_fcport_map, key);
1195 if (!slot) {
1196 if (new_se_nacl) {
1197 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1198 nacl->nport_id = key;
1199 rc = btree_insert32(&lport->lport_fcport_map, key,
1200 new_se_nacl, GFP_ATOMIC);
1201 if (rc)
1202 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1203 (int)key);
1204 } else {
1205 pr_debug("Wiping nonexisting fc_port entry\n");
1206 }
1207
1208 qla_tgt_sess->se_sess = se_sess;
1209 nacl->qla_tgt_sess = qla_tgt_sess;
1210 return;
1211 }
1212
1213 if (nacl->qla_tgt_sess) {
1214 if (new_se_nacl == NULL) {
1215 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1216 btree_remove32(&lport->lport_fcport_map, key);
1217 nacl->qla_tgt_sess = NULL;
1218 return;
1219 }
1220 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1221 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1222 qla_tgt_sess->se_sess = se_sess;
1223 nacl->qla_tgt_sess = qla_tgt_sess;
1224 return;
1225 }
1226
1227 if (new_se_nacl == NULL) {
1228 pr_debug("Clearing existing fc_port entry\n");
1229 btree_remove32(&lport->lport_fcport_map, key);
1230 return;
1231 }
1232
1233 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1234 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1235 qla_tgt_sess->se_sess = se_sess;
1236 nacl->qla_tgt_sess = qla_tgt_sess;
1237
1238 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1239 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1240 }
1241
1242 /*
1243 * Expected to be called with struct qla_hw_data->hardware_lock held
1244 */
1245 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1246 scsi_qla_host_t *vha,
1247 const uint16_t loop_id)
1248 {
1249 struct tcm_qla2xxx_lport *lport;
1250 struct se_node_acl *se_nacl;
1251 struct tcm_qla2xxx_nacl *nacl;
1252 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1253
1254 lport = vha->vha_tgt.target_lport_ptr;
1255 if (!lport) {
1256 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1257 dump_stack();
1258 return NULL;
1259 }
1260
1261 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1262
1263 fc_loopid = lport->lport_loopid_map + loop_id;
1264 se_nacl = fc_loopid->se_nacl;
1265 if (!se_nacl) {
1266 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1267 loop_id);
1268 return NULL;
1269 }
1270
1271 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1272
1273 if (!nacl->qla_tgt_sess) {
1274 pr_err("Unable to locate struct qla_tgt_sess\n");
1275 return NULL;
1276 }
1277
1278 return nacl->qla_tgt_sess;
1279 }
1280
1281 /*
1282 * Expected to be called with struct qla_hw_data->hardware_lock held
1283 */
1284 static void tcm_qla2xxx_set_sess_by_loop_id(
1285 struct tcm_qla2xxx_lport *lport,
1286 struct se_node_acl *new_se_nacl,
1287 struct tcm_qla2xxx_nacl *nacl,
1288 struct se_session *se_sess,
1289 struct qla_tgt_sess *qla_tgt_sess,
1290 uint16_t loop_id)
1291 {
1292 struct se_node_acl *saved_nacl;
1293 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1294
1295 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1296
1297 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1298 lport->lport_loopid_map)[loop_id];
1299
1300 saved_nacl = fc_loopid->se_nacl;
1301 if (!saved_nacl) {
1302 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1303 fc_loopid->se_nacl = new_se_nacl;
1304 if (qla_tgt_sess->se_sess != se_sess)
1305 qla_tgt_sess->se_sess = se_sess;
1306 if (nacl->qla_tgt_sess != qla_tgt_sess)
1307 nacl->qla_tgt_sess = qla_tgt_sess;
1308 return;
1309 }
1310
1311 if (nacl->qla_tgt_sess) {
1312 if (new_se_nacl == NULL) {
1313 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1314 fc_loopid->se_nacl = NULL;
1315 nacl->qla_tgt_sess = NULL;
1316 return;
1317 }
1318
1319 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1320 fc_loopid->se_nacl = new_se_nacl;
1321 if (qla_tgt_sess->se_sess != se_sess)
1322 qla_tgt_sess->se_sess = se_sess;
1323 if (nacl->qla_tgt_sess != qla_tgt_sess)
1324 nacl->qla_tgt_sess = qla_tgt_sess;
1325 return;
1326 }
1327
1328 if (new_se_nacl == NULL) {
1329 pr_debug("Clearing fc_loopid->se_nacl\n");
1330 fc_loopid->se_nacl = NULL;
1331 return;
1332 }
1333
1334 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1335 fc_loopid->se_nacl = new_se_nacl;
1336 if (qla_tgt_sess->se_sess != se_sess)
1337 qla_tgt_sess->se_sess = se_sess;
1338 if (nacl->qla_tgt_sess != qla_tgt_sess)
1339 nacl->qla_tgt_sess = qla_tgt_sess;
1340
1341 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1342 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1343 }
1344
1345 /*
1346 * Should always be called with qla_hw_data->hardware_lock held.
1347 */
1348 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1349 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1350 {
1351 struct se_session *se_sess = sess->se_sess;
1352 unsigned char be_sid[3];
1353
1354 be_sid[0] = sess->s_id.b.domain;
1355 be_sid[1] = sess->s_id.b.area;
1356 be_sid[2] = sess->s_id.b.al_pa;
1357
1358 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1359 sess, be_sid);
1360 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1361 sess, sess->loop_id);
1362 }
1363
1364 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1365 {
1366 struct qla_tgt *tgt = sess->tgt;
1367 struct qla_hw_data *ha = tgt->ha;
1368 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1369 struct se_session *se_sess;
1370 struct se_node_acl *se_nacl;
1371 struct tcm_qla2xxx_lport *lport;
1372 struct tcm_qla2xxx_nacl *nacl;
1373
1374 BUG_ON(in_interrupt());
1375
1376 se_sess = sess->se_sess;
1377 if (!se_sess) {
1378 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1379 dump_stack();
1380 return;
1381 }
1382 se_nacl = se_sess->se_node_acl;
1383 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1384
1385 lport = vha->vha_tgt.target_lport_ptr;
1386 if (!lport) {
1387 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1388 dump_stack();
1389 return;
1390 }
1391 target_wait_for_sess_cmds(se_sess);
1392
1393 transport_deregister_session_configfs(sess->se_sess);
1394 transport_deregister_session(sess->se_sess);
1395 }
1396
1397 /*
1398 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1399 * to locate struct se_node_acl
1400 */
1401 static int tcm_qla2xxx_check_initiator_node_acl(
1402 scsi_qla_host_t *vha,
1403 unsigned char *fc_wwpn,
1404 void *qla_tgt_sess,
1405 uint8_t *s_id,
1406 uint16_t loop_id)
1407 {
1408 struct qla_hw_data *ha = vha->hw;
1409 struct tcm_qla2xxx_lport *lport;
1410 struct tcm_qla2xxx_tpg *tpg;
1411 struct tcm_qla2xxx_nacl *nacl;
1412 struct se_portal_group *se_tpg;
1413 struct se_node_acl *se_nacl;
1414 struct se_session *se_sess;
1415 struct qla_tgt_sess *sess = qla_tgt_sess;
1416 unsigned char port_name[36];
1417 unsigned long flags;
1418 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1419 TCM_QLA2XXX_DEFAULT_TAGS;
1420
1421 lport = vha->vha_tgt.target_lport_ptr;
1422 if (!lport) {
1423 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1424 dump_stack();
1425 return -EINVAL;
1426 }
1427 /*
1428 * Locate the TPG=1 reference..
1429 */
1430 tpg = lport->tpg_1;
1431 if (!tpg) {
1432 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1433 return -EINVAL;
1434 }
1435 se_tpg = &tpg->se_tpg;
1436
1437 se_sess = transport_init_session_tags(num_tags,
1438 sizeof(struct qla_tgt_cmd),
1439 TARGET_PROT_ALL);
1440 if (IS_ERR(se_sess)) {
1441 pr_err("Unable to initialize struct se_session\n");
1442 return PTR_ERR(se_sess);
1443 }
1444 /*
1445 * Format the FCP Initiator port_name into colon seperated values to
1446 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1447 */
1448 memset(&port_name, 0, 36);
1449 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1450 /*
1451 * Locate our struct se_node_acl either from an explict NodeACL created
1452 * via ConfigFS, or via running in TPG demo mode.
1453 */
1454 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1455 port_name);
1456 if (!se_sess->se_node_acl) {
1457 transport_free_session(se_sess);
1458 return -EINVAL;
1459 }
1460 se_nacl = se_sess->se_node_acl;
1461 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1462 /*
1463 * And now setup the new se_nacl and session pointers into our HW lport
1464 * mappings for fabric S_ID and LOOP_ID.
1465 */
1466 spin_lock_irqsave(&ha->hardware_lock, flags);
1467 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1468 qla_tgt_sess, s_id);
1469 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1470 qla_tgt_sess, loop_id);
1471 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1472 /*
1473 * Finally register the new FC Nexus with TCM
1474 */
1475 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1476
1477 return 0;
1478 }
1479
1480 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1481 uint16_t loop_id, bool conf_compl_supported)
1482 {
1483 struct qla_tgt *tgt = sess->tgt;
1484 struct qla_hw_data *ha = tgt->ha;
1485 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1486 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1487 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1488 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1489 struct tcm_qla2xxx_nacl, se_node_acl);
1490 u32 key;
1491
1492
1493 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1494 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1495 sess, sess->port_name,
1496 sess->loop_id, loop_id, sess->s_id.b.domain,
1497 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1498 s_id.b.area, s_id.b.al_pa);
1499
1500 if (sess->loop_id != loop_id) {
1501 /*
1502 * Because we can shuffle loop IDs around and we
1503 * update different sessions non-atomically, we might
1504 * have overwritten this session's old loop ID
1505 * already, and we might end up overwriting some other
1506 * session that will be updated later. So we have to
1507 * be extra careful and we can't warn about those things...
1508 */
1509 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1510 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1511
1512 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1513
1514 sess->loop_id = loop_id;
1515 }
1516
1517 if (sess->s_id.b24 != s_id.b24) {
1518 key = (((u32) sess->s_id.b.domain << 16) |
1519 ((u32) sess->s_id.b.area << 8) |
1520 ((u32) sess->s_id.b.al_pa));
1521
1522 if (btree_lookup32(&lport->lport_fcport_map, key))
1523 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1524 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1525 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1526 else
1527 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1528 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1529
1530 key = (((u32) s_id.b.domain << 16) |
1531 ((u32) s_id.b.area << 8) |
1532 ((u32) s_id.b.al_pa));
1533
1534 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1535 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1536 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1537 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1538 } else {
1539 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1540 }
1541
1542 sess->s_id = s_id;
1543 nacl->nport_id = key;
1544 }
1545
1546 sess->conf_compl_supported = conf_compl_supported;
1547 }
1548
1549 /*
1550 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1551 */
1552 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1553 .handle_cmd = tcm_qla2xxx_handle_cmd,
1554 .handle_data = tcm_qla2xxx_handle_data,
1555 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1556 .handle_tmr = tcm_qla2xxx_handle_tmr,
1557 .free_cmd = tcm_qla2xxx_free_cmd,
1558 .free_mcmd = tcm_qla2xxx_free_mcmd,
1559 .free_session = tcm_qla2xxx_free_session,
1560 .update_sess = tcm_qla2xxx_update_sess,
1561 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1562 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1563 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1564 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1565 .put_sess = tcm_qla2xxx_put_sess,
1566 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1567 };
1568
1569 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1570 {
1571 int rc;
1572
1573 rc = btree_init32(&lport->lport_fcport_map);
1574 if (rc) {
1575 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1576 return rc;
1577 }
1578
1579 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1580 65536);
1581 if (!lport->lport_loopid_map) {
1582 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1583 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1584 btree_destroy32(&lport->lport_fcport_map);
1585 return -ENOMEM;
1586 }
1587 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1588 * 65536);
1589 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1590 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1591 return 0;
1592 }
1593
1594 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1595 void *target_lport_ptr,
1596 u64 npiv_wwpn, u64 npiv_wwnn)
1597 {
1598 struct qla_hw_data *ha = vha->hw;
1599 struct tcm_qla2xxx_lport *lport =
1600 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1601 /*
1602 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1603 */
1604 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1605 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1606 lport->qla_vha = vha;
1607
1608 return 0;
1609 }
1610
1611 static struct se_wwn *tcm_qla2xxx_make_lport(
1612 struct target_fabric_configfs *tf,
1613 struct config_group *group,
1614 const char *name)
1615 {
1616 struct tcm_qla2xxx_lport *lport;
1617 u64 wwpn;
1618 int ret = -ENODEV;
1619
1620 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1621 return ERR_PTR(-EINVAL);
1622
1623 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1624 if (!lport) {
1625 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1626 return ERR_PTR(-ENOMEM);
1627 }
1628 lport->lport_wwpn = wwpn;
1629 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1630 wwpn);
1631 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1632
1633 ret = tcm_qla2xxx_init_lport(lport);
1634 if (ret != 0)
1635 goto out;
1636
1637 ret = qlt_lport_register(lport, wwpn, 0, 0,
1638 tcm_qla2xxx_lport_register_cb);
1639 if (ret != 0)
1640 goto out_lport;
1641
1642 return &lport->lport_wwn;
1643 out_lport:
1644 vfree(lport->lport_loopid_map);
1645 btree_destroy32(&lport->lport_fcport_map);
1646 out:
1647 kfree(lport);
1648 return ERR_PTR(ret);
1649 }
1650
1651 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1652 {
1653 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1654 struct tcm_qla2xxx_lport, lport_wwn);
1655 struct scsi_qla_host *vha = lport->qla_vha;
1656 struct se_node_acl *node;
1657 u32 key = 0;
1658
1659 /*
1660 * Call into qla2x_target.c LLD logic to complete the
1661 * shutdown of struct qla_tgt after the call to
1662 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1663 */
1664 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1665 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1666
1667 qlt_lport_deregister(vha);
1668
1669 vfree(lport->lport_loopid_map);
1670 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1671 btree_remove32(&lport->lport_fcport_map, key);
1672 btree_destroy32(&lport->lport_fcport_map);
1673 kfree(lport);
1674 }
1675
1676 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1677 void *target_lport_ptr,
1678 u64 npiv_wwpn, u64 npiv_wwnn)
1679 {
1680 struct fc_vport *vport;
1681 struct Scsi_Host *sh = base_vha->host;
1682 struct scsi_qla_host *npiv_vha;
1683 struct tcm_qla2xxx_lport *lport =
1684 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1685 struct tcm_qla2xxx_lport *base_lport =
1686 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1687 struct tcm_qla2xxx_tpg *base_tpg;
1688 struct fc_vport_identifiers vport_id;
1689
1690 if (!qla_tgt_mode_enabled(base_vha)) {
1691 pr_err("qla2xxx base_vha not enabled for target mode\n");
1692 return -EPERM;
1693 }
1694
1695 if (!base_lport || !base_lport->tpg_1 ||
1696 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1697 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1698 return -EPERM;
1699 }
1700 base_tpg = base_lport->tpg_1;
1701
1702 memset(&vport_id, 0, sizeof(vport_id));
1703 vport_id.port_name = npiv_wwpn;
1704 vport_id.node_name = npiv_wwnn;
1705 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1706 vport_id.vport_type = FC_PORTTYPE_NPIV;
1707 vport_id.disable = false;
1708
1709 vport = fc_vport_create(sh, 0, &vport_id);
1710 if (!vport) {
1711 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1712 return -ENODEV;
1713 }
1714 /*
1715 * Setup local pointer to NPIV vhba + target_lport_ptr
1716 */
1717 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1718 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1719 lport->qla_vha = npiv_vha;
1720 scsi_host_get(npiv_vha->host);
1721 return 0;
1722 }
1723
1724
1725 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1726 struct target_fabric_configfs *tf,
1727 struct config_group *group,
1728 const char *name)
1729 {
1730 struct tcm_qla2xxx_lport *lport;
1731 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1732 char *p, tmp[128];
1733 int ret;
1734
1735 snprintf(tmp, 128, "%s", name);
1736
1737 p = strchr(tmp, '@');
1738 if (!p) {
1739 pr_err("Unable to locate NPIV '@' seperator\n");
1740 return ERR_PTR(-EINVAL);
1741 }
1742 *p++ = '\0';
1743
1744 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1745 return ERR_PTR(-EINVAL);
1746
1747 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1748 &npiv_wwpn, &npiv_wwnn) < 0)
1749 return ERR_PTR(-EINVAL);
1750
1751 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1752 if (!lport) {
1753 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1754 return ERR_PTR(-ENOMEM);
1755 }
1756 lport->lport_npiv_wwpn = npiv_wwpn;
1757 lport->lport_npiv_wwnn = npiv_wwnn;
1758 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1759
1760 ret = tcm_qla2xxx_init_lport(lport);
1761 if (ret != 0)
1762 goto out;
1763
1764 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1765 tcm_qla2xxx_lport_register_npiv_cb);
1766 if (ret != 0)
1767 goto out_lport;
1768
1769 return &lport->lport_wwn;
1770 out_lport:
1771 vfree(lport->lport_loopid_map);
1772 btree_destroy32(&lport->lport_fcport_map);
1773 out:
1774 kfree(lport);
1775 return ERR_PTR(ret);
1776 }
1777
1778 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1779 {
1780 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1781 struct tcm_qla2xxx_lport, lport_wwn);
1782 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1783 struct qla_hw_data *ha = npiv_vha->hw;
1784 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1785
1786 scsi_host_put(npiv_vha->host);
1787 /*
1788 * Notify libfc that we want to release the vha->fc_vport
1789 */
1790 fc_vport_terminate(npiv_vha->fc_vport);
1791 scsi_host_put(base_vha->host);
1792 kfree(lport);
1793 }
1794
1795
1796 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1797 struct target_fabric_configfs *tf,
1798 char *page)
1799 {
1800 return sprintf(page,
1801 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1802 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1803 utsname()->machine);
1804 }
1805
1806 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1807
1808 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1809 &tcm_qla2xxx_wwn_version.attr,
1810 NULL,
1811 };
1812
1813 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1814 .module = THIS_MODULE,
1815 .name = "qla2xxx",
1816 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1817 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1818 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1819 .tpg_get_tag = tcm_qla2xxx_get_tag,
1820 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1821 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1822 .tpg_check_demo_mode_write_protect =
1823 tcm_qla2xxx_check_demo_write_protect,
1824 .tpg_check_prod_mode_write_protect =
1825 tcm_qla2xxx_check_prod_write_protect,
1826 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1827 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1828 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1829 .check_stop_free = tcm_qla2xxx_check_stop_free,
1830 .release_cmd = tcm_qla2xxx_release_cmd,
1831 .shutdown_session = tcm_qla2xxx_shutdown_session,
1832 .close_session = tcm_qla2xxx_close_session,
1833 .sess_get_index = tcm_qla2xxx_sess_get_index,
1834 .sess_get_initiator_sid = NULL,
1835 .write_pending = tcm_qla2xxx_write_pending,
1836 .write_pending_status = tcm_qla2xxx_write_pending_status,
1837 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1838 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1839 .queue_data_in = tcm_qla2xxx_queue_data_in,
1840 .queue_status = tcm_qla2xxx_queue_status,
1841 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1842 .aborted_task = tcm_qla2xxx_aborted_task,
1843 /*
1844 * Setup function pointers for generic logic in
1845 * target_core_fabric_configfs.c
1846 */
1847 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1848 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1849 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1850 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1851 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1852
1853 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1854 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1855 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1856 };
1857
1858 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1859 .module = THIS_MODULE,
1860 .name = "qla2xxx_npiv",
1861 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1862 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1863 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1864 .tpg_get_tag = tcm_qla2xxx_get_tag,
1865 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1866 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1867 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1868 .tpg_check_prod_mode_write_protect =
1869 tcm_qla2xxx_check_prod_write_protect,
1870 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1871 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1872 .check_stop_free = tcm_qla2xxx_check_stop_free,
1873 .release_cmd = tcm_qla2xxx_release_cmd,
1874 .shutdown_session = tcm_qla2xxx_shutdown_session,
1875 .close_session = tcm_qla2xxx_close_session,
1876 .sess_get_index = tcm_qla2xxx_sess_get_index,
1877 .sess_get_initiator_sid = NULL,
1878 .write_pending = tcm_qla2xxx_write_pending,
1879 .write_pending_status = tcm_qla2xxx_write_pending_status,
1880 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1881 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1882 .queue_data_in = tcm_qla2xxx_queue_data_in,
1883 .queue_status = tcm_qla2xxx_queue_status,
1884 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1885 .aborted_task = tcm_qla2xxx_aborted_task,
1886 /*
1887 * Setup function pointers for generic logic in
1888 * target_core_fabric_configfs.c
1889 */
1890 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1891 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1892 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1893 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1894 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1895
1896 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1897 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1898 };
1899
1900 static int tcm_qla2xxx_register_configfs(void)
1901 {
1902 int ret;
1903
1904 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1905 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1906 utsname()->machine);
1907
1908 ret = target_register_template(&tcm_qla2xxx_ops);
1909 if (ret)
1910 return ret;
1911
1912 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1913 if (ret)
1914 goto out_fabric;
1915
1916 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1917 WQ_MEM_RECLAIM, 0);
1918 if (!tcm_qla2xxx_free_wq) {
1919 ret = -ENOMEM;
1920 goto out_fabric_npiv;
1921 }
1922
1923 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1924 if (!tcm_qla2xxx_cmd_wq) {
1925 ret = -ENOMEM;
1926 goto out_free_wq;
1927 }
1928
1929 return 0;
1930
1931 out_free_wq:
1932 destroy_workqueue(tcm_qla2xxx_free_wq);
1933 out_fabric_npiv:
1934 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1935 out_fabric:
1936 target_unregister_template(&tcm_qla2xxx_ops);
1937 return ret;
1938 }
1939
1940 static void tcm_qla2xxx_deregister_configfs(void)
1941 {
1942 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1943 destroy_workqueue(tcm_qla2xxx_free_wq);
1944
1945 target_unregister_template(&tcm_qla2xxx_ops);
1946 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1947 }
1948
1949 static int __init tcm_qla2xxx_init(void)
1950 {
1951 int ret;
1952
1953 ret = tcm_qla2xxx_register_configfs();
1954 if (ret < 0)
1955 return ret;
1956
1957 return 0;
1958 }
1959
1960 static void __exit tcm_qla2xxx_exit(void)
1961 {
1962 tcm_qla2xxx_deregister_configfs();
1963 }
1964
1965 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1966 MODULE_LICENSE("GPL");
1967 module_init(tcm_qla2xxx_init);
1968 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support