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Linux 4.19.133
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blobb51dba35bcf754150f0726c07ac65e26e164a68c
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
52 /*
53 * Parse WWN.
54 * If strict, we require lower-case hex and colon separators to be sure
55 * the name is the same as what would be generated by ft_format_wwn()
56 * so the name and wwn are mapped one-to-one.
57 */
58 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
59 {
60 const char *cp;
61 char c;
62 u32 nibble;
63 u32 byte = 0;
64 u32 pos = 0;
65 u32 err;
66
67 *wwn = 0;
68 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
69 c = *cp;
70 if (c == '\n' && cp[1] == '\0')
71 continue;
72 if (strict && pos++ == 2 && byte++ < 7) {
73 pos = 0;
74 if (c == ':')
75 continue;
76 err = 1;
77 goto fail;
78 }
79 if (c == '\0') {
80 err = 2;
81 if (strict && byte != 8)
82 goto fail;
83 return cp - name;
84 }
85 err = 3;
86 if (isdigit(c))
87 nibble = c - '0';
88 else if (isxdigit(c) && (islower(c) || !strict))
89 nibble = tolower(c) - 'a' + 10;
90 else
91 goto fail;
92 *wwn = (*wwn << 4) | nibble;
93 }
94 err = 4;
95 fail:
96 pr_debug("err %u len %zu pos %u byte %u\n",
97 err, cp - name, pos, byte);
98 return -1;
99 }
100
101 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
102 {
103 u8 b[8];
104
105 put_unaligned_be64(wwn, b);
106 return snprintf(buf, len,
107 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
108 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
109 }
110
111 static char *tcm_qla2xxx_get_fabric_name(void)
112 {
113 return "qla2xxx";
114 }
115
116 /*
117 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
118 */
119 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
120 {
121 unsigned int i, j;
122 u8 wwn[8];
123
124 memset(wwn, 0, sizeof(wwn));
125
126 /* Validate and store the new name */
127 for (i = 0, j = 0; i < 16; i++) {
128 int value;
129
130 value = hex_to_bin(*ns++);
131 if (value >= 0)
132 j = (j << 4) | value;
133 else
134 return -EINVAL;
135
136 if (i % 2) {
137 wwn[i/2] = j & 0xff;
138 j = 0;
139 }
140 }
141
142 *nm = wwn_to_u64(wwn);
143 return 0;
144 }
145
146 /*
147 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
148 * store_fc_host_vport_create()
149 */
150 static int tcm_qla2xxx_npiv_parse_wwn(
151 const char *name,
152 size_t count,
153 u64 *wwpn,
154 u64 *wwnn)
155 {
156 unsigned int cnt = count;
157 int rc;
158
159 *wwpn = 0;
160 *wwnn = 0;
161
162 /* count may include a LF at end of string */
163 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
164 cnt--;
165
166 /* validate we have enough characters for WWPN */
167 if ((cnt != (16+1+16)) || (name[16] != ':'))
168 return -EINVAL;
169
170 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
171 if (rc != 0)
172 return rc;
173
174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
175 if (rc != 0)
176 return rc;
177
178 return 0;
179 }
180
181 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
182 {
183 return "qla2xxx_npiv";
184 }
185
186 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
187 {
188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
189 struct tcm_qla2xxx_tpg, se_tpg);
190 struct tcm_qla2xxx_lport *lport = tpg->lport;
191
192 return lport->lport_naa_name;
193 }
194
195 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
196 {
197 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
198 struct tcm_qla2xxx_tpg, se_tpg);
199 return tpg->lport_tpgt;
200 }
201
202 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
203 {
204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
205 struct tcm_qla2xxx_tpg, se_tpg);
206
207 return tpg->tpg_attrib.generate_node_acls;
208 }
209
210 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
211 {
212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
213 struct tcm_qla2xxx_tpg, se_tpg);
214
215 return tpg->tpg_attrib.cache_dynamic_acls;
216 }
217
218 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
219 {
220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
221 struct tcm_qla2xxx_tpg, se_tpg);
222
223 return tpg->tpg_attrib.demo_mode_write_protect;
224 }
225
226 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
227 {
228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
229 struct tcm_qla2xxx_tpg, se_tpg);
230
231 return tpg->tpg_attrib.prod_mode_write_protect;
232 }
233
234 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
235 {
236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
237 struct tcm_qla2xxx_tpg, se_tpg);
238
239 return tpg->tpg_attrib.demo_mode_login_only;
240 }
241
242 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
243 {
244 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
245 struct tcm_qla2xxx_tpg, se_tpg);
246
247 return tpg->tpg_attrib.fabric_prot_type;
248 }
249
250 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
251 {
252 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
253 struct tcm_qla2xxx_tpg, se_tpg);
254
255 return tpg->lport_tpgt;
256 }
257
258 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
259 {
260 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
261 struct qla_tgt_mgmt_cmd, free_work);
262
263 transport_generic_free_cmd(&mcmd->se_cmd, 0);
264 }
265
266 /*
267 * Called from qla_target_template->free_mcmd(), and will call
268 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
269 * release callback. qla_hw_data->hardware_lock is expected to be held
270 */
271 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
272 {
273 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
274 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
275 }
276
277 static void tcm_qla2xxx_complete_free(struct work_struct *work)
278 {
279 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
280
281 cmd->cmd_in_wq = 0;
282
283 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
284
285 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
286 cmd->trc_flags |= TRC_CMD_FREE;
287 transport_generic_free_cmd(&cmd->se_cmd, 0);
288 }
289
290 /*
291 * Called from qla_target_template->free_cmd(), and will call
292 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
293 * release callback. qla_hw_data->hardware_lock is expected to be held
294 */
295 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
296 {
297 cmd->qpair->tgt_counters.core_qla_free_cmd++;
298 cmd->cmd_in_wq = 1;
299
300 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
301 cmd->trc_flags |= TRC_CMD_DONE;
302
303 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
304 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
305 }
306
307 /*
308 * Called from struct target_core_fabric_ops->check_stop_free() context
309 */
310 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
311 {
312 struct qla_tgt_cmd *cmd;
313
314 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
315 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
316 cmd->trc_flags |= TRC_CMD_CHK_STOP;
317 }
318
319 return target_put_sess_cmd(se_cmd);
320 }
321
322 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
323 * fabric descriptor @se_cmd command to release
324 */
325 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
326 {
327 struct qla_tgt_cmd *cmd;
328
329 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
330 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
331 struct qla_tgt_mgmt_cmd, se_cmd);
332 qlt_free_mcmd(mcmd);
333 return;
334 }
335
336 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
337 qlt_free_cmd(cmd);
338 }
339
340 static void tcm_qla2xxx_release_session(struct kref *kref)
341 {
342 struct fc_port *sess = container_of(kref,
343 struct fc_port, sess_kref);
344
345 qlt_unreg_sess(sess);
346 }
347
348 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
349 {
350 if (!sess)
351 return;
352
353 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
354 }
355
356 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
357 {
358 struct fc_port *sess = se_sess->fabric_sess_ptr;
359 struct scsi_qla_host *vha;
360 unsigned long flags;
361
362 BUG_ON(!sess);
363 vha = sess->vha;
364
365 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
366 target_sess_cmd_list_set_waiting(se_sess);
367 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
368
369 tcm_qla2xxx_put_sess(sess);
370 }
371
372 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
373 {
374 return 0;
375 }
376
377 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
378 {
379 struct qla_tgt_cmd *cmd = container_of(se_cmd,
380 struct qla_tgt_cmd, se_cmd);
381
382 if (cmd->aborted) {
383 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
384 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
385 * already kick start the free.
386 */
387 pr_debug("write_pending aborted cmd[%p] refcount %d "
388 "transport_state %x, t_state %x, se_cmd_flags %x\n",
389 cmd, kref_read(&cmd->se_cmd.cmd_kref),
390 cmd->se_cmd.transport_state,
391 cmd->se_cmd.t_state,
392 cmd->se_cmd.se_cmd_flags);
393 transport_generic_request_failure(&cmd->se_cmd,
394 TCM_CHECK_CONDITION_ABORT_CMD);
395 return 0;
396 }
397 cmd->trc_flags |= TRC_XFR_RDY;
398 cmd->bufflen = se_cmd->data_length;
399 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
400
401 cmd->sg_cnt = se_cmd->t_data_nents;
402 cmd->sg = se_cmd->t_data_sg;
403
404 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
405 cmd->prot_sg = se_cmd->t_prot_sg;
406 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
407 se_cmd->pi_err = 0;
408
409 /*
410 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
411 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
412 */
413 return qlt_rdy_to_xfer(cmd);
414 }
415
416 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
417 {
418 unsigned long flags;
419 /*
420 * Check for WRITE_PENDING status to determine if we need to wait for
421 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
422 */
423 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
424 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
425 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
426 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
427 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
428 50);
429 return 0;
430 }
431 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
432
433 return 0;
434 }
435
436 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
437 {
438 return;
439 }
440
441 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
442 {
443 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
444 struct qla_tgt_cmd *cmd = container_of(se_cmd,
445 struct qla_tgt_cmd, se_cmd);
446 return cmd->state;
447 }
448
449 return 0;
450 }
451
452 /*
453 * Called from process context in qla_target.c:qlt_do_work() code
454 */
455 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
456 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
457 int data_dir, int bidi)
458 {
459 struct se_cmd *se_cmd = &cmd->se_cmd;
460 struct se_session *se_sess;
461 struct fc_port *sess;
462 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
463 struct se_portal_group *se_tpg;
464 struct tcm_qla2xxx_tpg *tpg;
465 #endif
466 int flags = TARGET_SCF_ACK_KREF;
467
468 if (bidi)
469 flags |= TARGET_SCF_BIDI_OP;
470
471 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
472 flags |= TARGET_SCF_USE_CPUID;
473
474 sess = cmd->sess;
475 if (!sess) {
476 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
477 return -EINVAL;
478 }
479
480 se_sess = sess->se_sess;
481 if (!se_sess) {
482 pr_err("Unable to locate active struct se_session\n");
483 return -EINVAL;
484 }
485
486 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
487 se_tpg = se_sess->se_tpg;
488 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
489 if (unlikely(tpg->tpg_attrib.jam_host)) {
490 /* return, and dont run target_submit_cmd,discarding command */
491 return 0;
492 }
493 #endif
494
495 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
496 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
497 cmd->unpacked_lun, data_length, fcp_task_attr,
498 data_dir, flags);
499 }
500
501 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
502 {
503 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
504
505 /*
506 * Ensure that the complete FCP WRITE payload has been received.
507 * Otherwise return an exception via CHECK_CONDITION status.
508 */
509 cmd->cmd_in_wq = 0;
510
511 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
512 if (!cmd->write_data_transferred) {
513 /*
514 * Check if se_cmd has already been aborted via LUN_RESET, and
515 * waiting upon completion in tcm_qla2xxx_write_pending_status()
516 */
517 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
518 complete(&cmd->se_cmd.t_transport_stop_comp);
519 return;
520 }
521
522 switch (cmd->dif_err_code) {
523 case DIF_ERR_GRD:
524 cmd->se_cmd.pi_err =
525 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
526 break;
527 case DIF_ERR_REF:
528 cmd->se_cmd.pi_err =
529 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
530 break;
531 case DIF_ERR_APP:
532 cmd->se_cmd.pi_err =
533 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
534 break;
535 case DIF_ERR_NONE:
536 default:
537 break;
538 }
539
540 if (cmd->se_cmd.pi_err)
541 transport_generic_request_failure(&cmd->se_cmd,
542 cmd->se_cmd.pi_err);
543 else
544 transport_generic_request_failure(&cmd->se_cmd,
545 TCM_CHECK_CONDITION_ABORT_CMD);
546
547 return;
548 }
549
550 return target_execute_cmd(&cmd->se_cmd);
551 }
552
553 /*
554 * Called from qla_target.c:qlt_do_ctio_completion()
555 */
556 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
557 {
558 cmd->trc_flags |= TRC_DATA_IN;
559 cmd->cmd_in_wq = 1;
560 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
561 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
562 }
563
564 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
565 {
566 return 0;
567 }
568
569 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
570 uint16_t *pfw_prot_opts)
571 {
572 struct se_cmd *se_cmd = &cmd->se_cmd;
573
574 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
575 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
576
577 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
578 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
579
580 return 0;
581 }
582
583 /*
584 * Called from qla_target.c:qlt_issue_task_mgmt()
585 */
586 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
587 uint16_t tmr_func, uint32_t tag)
588 {
589 struct fc_port *sess = mcmd->sess;
590 struct se_cmd *se_cmd = &mcmd->se_cmd;
591 int transl_tmr_func = 0;
592 int flags = TARGET_SCF_ACK_KREF;
593
594 switch (tmr_func) {
595 case QLA_TGT_ABTS:
596 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
597 transl_tmr_func = TMR_ABORT_TASK;
598 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
599 break;
600 case QLA_TGT_2G_ABORT_TASK:
601 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
602 transl_tmr_func = TMR_ABORT_TASK;
603 break;
604 case QLA_TGT_CLEAR_ACA:
605 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
606 transl_tmr_func = TMR_CLEAR_ACA;
607 break;
608 case QLA_TGT_TARGET_RESET:
609 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
610 transl_tmr_func = TMR_TARGET_WARM_RESET;
611 break;
612 case QLA_TGT_LUN_RESET:
613 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
614 transl_tmr_func = TMR_LUN_RESET;
615 break;
616 case QLA_TGT_CLEAR_TS:
617 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
618 transl_tmr_func = TMR_CLEAR_TASK_SET;
619 break;
620 case QLA_TGT_ABORT_TS:
621 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
622 transl_tmr_func = TMR_ABORT_TASK_SET;
623 break;
624 default:
625 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
626 sess->vha->host_no, tmr_func);
627 return -ENOSYS;
628 }
629
630 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
631 transl_tmr_func, GFP_ATOMIC, tag, flags);
632 }
633
634 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
635 uint64_t tag)
636 {
637 struct qla_tgt_cmd *cmd = NULL;
638 struct se_cmd *secmd;
639 unsigned long flags;
640
641 if (!sess->se_sess)
642 return NULL;
643
644 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
645 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
646 /* skip task management functions, including tmr->task_cmd */
647 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
648 continue;
649
650 if (secmd->tag == tag) {
651 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
652 break;
653 }
654 }
655 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
656
657 return cmd;
658 }
659
660 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
661 {
662 struct qla_tgt_cmd *cmd = container_of(se_cmd,
663 struct qla_tgt_cmd, se_cmd);
664
665 if (cmd->aborted) {
666 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
667 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
668 * already kick start the free.
669 */
670 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
671 "transport_state %x, t_state %x, se_cmd_flags %x\n",
672 cmd, kref_read(&cmd->se_cmd.cmd_kref),
673 cmd->se_cmd.transport_state,
674 cmd->se_cmd.t_state,
675 cmd->se_cmd.se_cmd_flags);
676 return 0;
677 }
678
679 cmd->trc_flags |= TRC_XMIT_DATA;
680 cmd->bufflen = se_cmd->data_length;
681 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
682
683 cmd->sg_cnt = se_cmd->t_data_nents;
684 cmd->sg = se_cmd->t_data_sg;
685 cmd->offset = 0;
686
687 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
688 cmd->prot_sg = se_cmd->t_prot_sg;
689 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
690 se_cmd->pi_err = 0;
691
692 /*
693 * Now queue completed DATA_IN the qla2xxx LLD and response ring
694 */
695 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
696 se_cmd->scsi_status);
697 }
698
699 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
700 {
701 struct qla_tgt_cmd *cmd = container_of(se_cmd,
702 struct qla_tgt_cmd, se_cmd);
703 int xmit_type = QLA_TGT_XMIT_STATUS;
704
705 if (cmd->aborted) {
706 /*
707 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
708 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
709 * already kick start the free.
710 */
711 pr_debug(
712 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
713 cmd, kref_read(&cmd->se_cmd.cmd_kref),
714 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
715 cmd->se_cmd.se_cmd_flags);
716 return 0;
717 }
718 cmd->bufflen = se_cmd->data_length;
719 cmd->sg = NULL;
720 cmd->sg_cnt = 0;
721 cmd->offset = 0;
722 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
723 cmd->trc_flags |= TRC_XMIT_STATUS;
724
725 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
726 /*
727 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
728 * for qla_tgt_xmit_response LLD code
729 */
730 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
731 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
732 se_cmd->residual_count = 0;
733 }
734 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
735 se_cmd->residual_count += se_cmd->data_length;
736
737 cmd->bufflen = 0;
738 }
739 /*
740 * Now queue status response to qla2xxx LLD code and response ring
741 */
742 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
743 }
744
745 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
746 {
747 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
748 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
749 struct qla_tgt_mgmt_cmd, se_cmd);
750
751 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
752 mcmd, se_tmr->function, se_tmr->response);
753 /*
754 * Do translation between TCM TM response codes and
755 * QLA2xxx FC TM response codes.
756 */
757 switch (se_tmr->response) {
758 case TMR_FUNCTION_COMPLETE:
759 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
760 break;
761 case TMR_TASK_DOES_NOT_EXIST:
762 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
763 break;
764 case TMR_FUNCTION_REJECTED:
765 mcmd->fc_tm_rsp = FC_TM_REJECT;
766 break;
767 case TMR_LUN_DOES_NOT_EXIST:
768 default:
769 mcmd->fc_tm_rsp = FC_TM_FAILED;
770 break;
771 }
772 /*
773 * Queue the TM response to QLA2xxx LLD to build a
774 * CTIO response packet.
775 */
776 qlt_xmit_tm_rsp(mcmd);
777 }
778
779 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
780 {
781 struct qla_tgt_cmd *cmd = container_of(se_cmd,
782 struct qla_tgt_cmd, se_cmd);
783
784 if (qlt_abort_cmd(cmd))
785 return;
786 }
787
788 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
789 struct tcm_qla2xxx_nacl *, struct fc_port *);
790 /*
791 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
792 */
793 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
794 {
795 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
796 struct se_portal_group *se_tpg = se_nacl->se_tpg;
797 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
798 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
799 struct tcm_qla2xxx_lport, lport_wwn);
800 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
801 struct tcm_qla2xxx_nacl, se_node_acl);
802 void *node;
803
804 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
805
806 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
807 if (WARN_ON(node && (node != se_nacl))) {
808 /*
809 * The nacl no longer matches what we think it should be.
810 * Most likely a new dynamic acl has been added while
811 * someone dropped the hardware lock. It clearly is a
812 * bug elsewhere, but this bit can't make things worse.
813 */
814 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
815 node, GFP_ATOMIC);
816 }
817
818 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
819 se_nacl, nacl->nport_wwnn, nacl->nport_id);
820 /*
821 * Now clear the se_nacl and session pointers from our HW lport lookup
822 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
823 *
824 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
825 * target_wait_for_sess_cmds() before the session waits for outstanding
826 * I/O to complete, to avoid a race between session shutdown execution
827 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
828 */
829 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
830 }
831
832 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
833 {
834 target_sess_cmd_list_set_waiting(sess->se_sess);
835 }
836
837 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
838 const char *name)
839 {
840 struct tcm_qla2xxx_nacl *nacl =
841 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
842 u64 wwnn;
843
844 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
845 return -EINVAL;
846
847 nacl->nport_wwnn = wwnn;
848 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
849
850 return 0;
851 }
852
853 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
854
855 #define DEF_QLA_TPG_ATTRIB(name) \
856 \
857 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
858 struct config_item *item, char *page) \
859 { \
860 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
861 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
862 struct tcm_qla2xxx_tpg, se_tpg); \
863 \
864 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
865 } \
866 \
867 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
868 struct config_item *item, const char *page, size_t count) \
869 { \
870 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
871 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
872 struct tcm_qla2xxx_tpg, se_tpg); \
873 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
874 unsigned long val; \
875 int ret; \
876 \
877 ret = kstrtoul(page, 0, &val); \
878 if (ret < 0) { \
879 pr_err("kstrtoul() failed with" \
880 " ret: %d\n", ret); \
881 return -EINVAL; \
882 } \
883 \
884 if ((val != 0) && (val != 1)) { \
885 pr_err("Illegal boolean value %lu\n", val); \
886 return -EINVAL; \
887 } \
888 \
889 a->name = val; \
890 \
891 return count; \
892 } \
893 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
894
895 DEF_QLA_TPG_ATTRIB(generate_node_acls);
896 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
897 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
898 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
899 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
900 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
901 DEF_QLA_TPG_ATTRIB(jam_host);
902 #endif
903
904 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
905 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
906 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
907 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
908 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
909 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
910 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
911 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
912 #endif
913 NULL,
914 };
915
916 /* End items for tcm_qla2xxx_tpg_attrib_cit */
917
918 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
919 char *page)
920 {
921 struct se_portal_group *se_tpg = to_tpg(item);
922 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
923 struct tcm_qla2xxx_tpg, se_tpg);
924
925 return snprintf(page, PAGE_SIZE, "%d\n",
926 atomic_read(&tpg->lport_tpg_enabled));
927 }
928
929 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
930 const char *page, size_t count)
931 {
932 struct se_portal_group *se_tpg = to_tpg(item);
933 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
934 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
935 struct tcm_qla2xxx_lport, lport_wwn);
936 struct scsi_qla_host *vha = lport->qla_vha;
937 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
938 struct tcm_qla2xxx_tpg, se_tpg);
939 unsigned long op;
940 int rc;
941
942 rc = kstrtoul(page, 0, &op);
943 if (rc < 0) {
944 pr_err("kstrtoul() returned %d\n", rc);
945 return -EINVAL;
946 }
947 if ((op != 1) && (op != 0)) {
948 pr_err("Illegal value for tpg_enable: %lu\n", op);
949 return -EINVAL;
950 }
951 if (op) {
952 if (atomic_read(&tpg->lport_tpg_enabled))
953 return -EEXIST;
954
955 atomic_set(&tpg->lport_tpg_enabled, 1);
956 qlt_enable_vha(vha);
957 } else {
958 if (!atomic_read(&tpg->lport_tpg_enabled))
959 return count;
960
961 atomic_set(&tpg->lport_tpg_enabled, 0);
962 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
963 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
964 }
965
966 return count;
967 }
968
969 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
970 char *page)
971 {
972 return target_show_dynamic_sessions(to_tpg(item), page);
973 }
974
975 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
976 const char *page, size_t count)
977 {
978 struct se_portal_group *se_tpg = to_tpg(item);
979 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
980 struct tcm_qla2xxx_tpg, se_tpg);
981 unsigned long val;
982 int ret = kstrtoul(page, 0, &val);
983
984 if (ret) {
985 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
986 return ret;
987 }
988 if (val != 0 && val != 1 && val != 3) {
989 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
990 return -EINVAL;
991 }
992 tpg->tpg_attrib.fabric_prot_type = val;
993
994 return count;
995 }
996
997 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
998 char *page)
999 {
1000 struct se_portal_group *se_tpg = to_tpg(item);
1001 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1002 struct tcm_qla2xxx_tpg, se_tpg);
1003
1004 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1005 }
1006
1007 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
1008 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
1009 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
1010
1011 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1012 &tcm_qla2xxx_tpg_attr_enable,
1013 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1014 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1015 NULL,
1016 };
1017
1018 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
1019 const char *name)
1020 {
1021 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1022 struct tcm_qla2xxx_lport, lport_wwn);
1023 struct tcm_qla2xxx_tpg *tpg;
1024 unsigned long tpgt;
1025 int ret;
1026
1027 if (strstr(name, "tpgt_") != name)
1028 return ERR_PTR(-EINVAL);
1029 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1030 return ERR_PTR(-EINVAL);
1031
1032 if ((tpgt != 1)) {
1033 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1034 return ERR_PTR(-ENOSYS);
1035 }
1036
1037 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1038 if (!tpg) {
1039 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1040 return ERR_PTR(-ENOMEM);
1041 }
1042 tpg->lport = lport;
1043 tpg->lport_tpgt = tpgt;
1044 /*
1045 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1046 * NodeACLs
1047 */
1048 tpg->tpg_attrib.generate_node_acls = 1;
1049 tpg->tpg_attrib.demo_mode_write_protect = 1;
1050 tpg->tpg_attrib.cache_dynamic_acls = 1;
1051 tpg->tpg_attrib.demo_mode_login_only = 1;
1052 tpg->tpg_attrib.jam_host = 0;
1053
1054 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1055 if (ret < 0) {
1056 kfree(tpg);
1057 return NULL;
1058 }
1059
1060 lport->tpg_1 = tpg;
1061
1062 return &tpg->se_tpg;
1063 }
1064
1065 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1066 {
1067 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1068 struct tcm_qla2xxx_tpg, se_tpg);
1069 struct tcm_qla2xxx_lport *lport = tpg->lport;
1070 struct scsi_qla_host *vha = lport->qla_vha;
1071 /*
1072 * Call into qla2x_target.c LLD logic to shutdown the active
1073 * FC Nexuses and disable target mode operation for this qla_hw_data
1074 */
1075 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1076 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1077
1078 core_tpg_deregister(se_tpg);
1079 /*
1080 * Clear local TPG=1 pointer for non NPIV mode.
1081 */
1082 lport->tpg_1 = NULL;
1083 kfree(tpg);
1084 }
1085
1086 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1087 char *page)
1088 {
1089 return tcm_qla2xxx_tpg_enable_show(item, page);
1090 }
1091
1092 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1093 const char *page, size_t count)
1094 {
1095 struct se_portal_group *se_tpg = to_tpg(item);
1096 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1097 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1098 struct tcm_qla2xxx_lport, lport_wwn);
1099 struct scsi_qla_host *vha = lport->qla_vha;
1100 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1101 struct tcm_qla2xxx_tpg, se_tpg);
1102 unsigned long op;
1103 int rc;
1104
1105 rc = kstrtoul(page, 0, &op);
1106 if (rc < 0) {
1107 pr_err("kstrtoul() returned %d\n", rc);
1108 return -EINVAL;
1109 }
1110 if ((op != 1) && (op != 0)) {
1111 pr_err("Illegal value for tpg_enable: %lu\n", op);
1112 return -EINVAL;
1113 }
1114 if (op) {
1115 if (atomic_read(&tpg->lport_tpg_enabled))
1116 return -EEXIST;
1117
1118 atomic_set(&tpg->lport_tpg_enabled, 1);
1119 qlt_enable_vha(vha);
1120 } else {
1121 if (!atomic_read(&tpg->lport_tpg_enabled))
1122 return count;
1123
1124 atomic_set(&tpg->lport_tpg_enabled, 0);
1125 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1126 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1127 }
1128
1129 return count;
1130 }
1131
1132 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1133
1134 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1135 &tcm_qla2xxx_npiv_tpg_attr_enable,
1136 NULL,
1137 };
1138
1139 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
1140 const char *name)
1141 {
1142 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1143 struct tcm_qla2xxx_lport, lport_wwn);
1144 struct tcm_qla2xxx_tpg *tpg;
1145 unsigned long tpgt;
1146 int ret;
1147
1148 if (strstr(name, "tpgt_") != name)
1149 return ERR_PTR(-EINVAL);
1150 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1151 return ERR_PTR(-EINVAL);
1152
1153 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1154 if (!tpg) {
1155 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1156 return ERR_PTR(-ENOMEM);
1157 }
1158 tpg->lport = lport;
1159 tpg->lport_tpgt = tpgt;
1160
1161 /*
1162 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1163 * NodeACLs
1164 */
1165 tpg->tpg_attrib.generate_node_acls = 1;
1166 tpg->tpg_attrib.demo_mode_write_protect = 1;
1167 tpg->tpg_attrib.cache_dynamic_acls = 1;
1168 tpg->tpg_attrib.demo_mode_login_only = 1;
1169
1170 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1171 if (ret < 0) {
1172 kfree(tpg);
1173 return NULL;
1174 }
1175 lport->tpg_1 = tpg;
1176 return &tpg->se_tpg;
1177 }
1178
1179 /*
1180 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1181 */
1182 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(
1183 scsi_qla_host_t *vha,
1184 const uint8_t *s_id)
1185 {
1186 struct tcm_qla2xxx_lport *lport;
1187 struct se_node_acl *se_nacl;
1188 struct tcm_qla2xxx_nacl *nacl;
1189 u32 key;
1190
1191 lport = vha->vha_tgt.target_lport_ptr;
1192 if (!lport) {
1193 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1194 dump_stack();
1195 return NULL;
1196 }
1197
1198 key = sid_to_key(s_id);
1199 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1200
1201 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1202 if (!se_nacl) {
1203 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1204 return NULL;
1205 }
1206 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1207 se_nacl, se_nacl->initiatorname);
1208
1209 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1210 if (!nacl->fc_port) {
1211 pr_err("Unable to locate struct fc_port\n");
1212 return NULL;
1213 }
1214
1215 return nacl->fc_port;
1216 }
1217
1218 /*
1219 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1220 */
1221 static void tcm_qla2xxx_set_sess_by_s_id(
1222 struct tcm_qla2xxx_lport *lport,
1223 struct se_node_acl *new_se_nacl,
1224 struct tcm_qla2xxx_nacl *nacl,
1225 struct se_session *se_sess,
1226 struct fc_port *fc_port,
1227 uint8_t *s_id)
1228 {
1229 u32 key;
1230 void *slot;
1231 int rc;
1232
1233 key = sid_to_key(s_id);
1234 pr_debug("set_sess_by_s_id: %06x\n", key);
1235
1236 slot = btree_lookup32(&lport->lport_fcport_map, key);
1237 if (!slot) {
1238 if (new_se_nacl) {
1239 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1240 nacl->nport_id = key;
1241 rc = btree_insert32(&lport->lport_fcport_map, key,
1242 new_se_nacl, GFP_ATOMIC);
1243 if (rc)
1244 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1245 (int)key);
1246 } else {
1247 pr_debug("Wiping nonexisting fc_port entry\n");
1248 }
1249
1250 fc_port->se_sess = se_sess;
1251 nacl->fc_port = fc_port;
1252 return;
1253 }
1254
1255 if (nacl->fc_port) {
1256 if (new_se_nacl == NULL) {
1257 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1258 btree_remove32(&lport->lport_fcport_map, key);
1259 nacl->fc_port = NULL;
1260 return;
1261 }
1262 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1263 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1264 fc_port->se_sess = se_sess;
1265 nacl->fc_port = fc_port;
1266 return;
1267 }
1268
1269 if (new_se_nacl == NULL) {
1270 pr_debug("Clearing existing fc_port entry\n");
1271 btree_remove32(&lport->lport_fcport_map, key);
1272 return;
1273 }
1274
1275 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1276 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1277 fc_port->se_sess = se_sess;
1278 nacl->fc_port = fc_port;
1279
1280 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1281 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1282 }
1283
1284 /*
1285 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1286 */
1287 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1288 scsi_qla_host_t *vha,
1289 const uint16_t loop_id)
1290 {
1291 struct tcm_qla2xxx_lport *lport;
1292 struct se_node_acl *se_nacl;
1293 struct tcm_qla2xxx_nacl *nacl;
1294 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1295
1296 lport = vha->vha_tgt.target_lport_ptr;
1297 if (!lport) {
1298 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1299 dump_stack();
1300 return NULL;
1301 }
1302
1303 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1304
1305 fc_loopid = lport->lport_loopid_map + loop_id;
1306 se_nacl = fc_loopid->se_nacl;
1307 if (!se_nacl) {
1308 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1309 loop_id);
1310 return NULL;
1311 }
1312
1313 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1314
1315 if (!nacl->fc_port) {
1316 pr_err("Unable to locate struct fc_port\n");
1317 return NULL;
1318 }
1319
1320 return nacl->fc_port;
1321 }
1322
1323 /*
1324 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1325 */
1326 static void tcm_qla2xxx_set_sess_by_loop_id(
1327 struct tcm_qla2xxx_lport *lport,
1328 struct se_node_acl *new_se_nacl,
1329 struct tcm_qla2xxx_nacl *nacl,
1330 struct se_session *se_sess,
1331 struct fc_port *fc_port,
1332 uint16_t loop_id)
1333 {
1334 struct se_node_acl *saved_nacl;
1335 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1336
1337 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1338
1339 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1340 lport->lport_loopid_map)[loop_id];
1341
1342 saved_nacl = fc_loopid->se_nacl;
1343 if (!saved_nacl) {
1344 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1345 fc_loopid->se_nacl = new_se_nacl;
1346 if (fc_port->se_sess != se_sess)
1347 fc_port->se_sess = se_sess;
1348 if (nacl->fc_port != fc_port)
1349 nacl->fc_port = fc_port;
1350 return;
1351 }
1352
1353 if (nacl->fc_port) {
1354 if (new_se_nacl == NULL) {
1355 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1356 fc_loopid->se_nacl = NULL;
1357 nacl->fc_port = NULL;
1358 return;
1359 }
1360
1361 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1362 fc_loopid->se_nacl = new_se_nacl;
1363 if (fc_port->se_sess != se_sess)
1364 fc_port->se_sess = se_sess;
1365 if (nacl->fc_port != fc_port)
1366 nacl->fc_port = fc_port;
1367 return;
1368 }
1369
1370 if (new_se_nacl == NULL) {
1371 pr_debug("Clearing fc_loopid->se_nacl\n");
1372 fc_loopid->se_nacl = NULL;
1373 return;
1374 }
1375
1376 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1377 fc_loopid->se_nacl = new_se_nacl;
1378 if (fc_port->se_sess != se_sess)
1379 fc_port->se_sess = se_sess;
1380 if (nacl->fc_port != fc_port)
1381 nacl->fc_port = fc_port;
1382
1383 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1384 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1385 }
1386
1387 /*
1388 * Should always be called with qla_hw_data->tgt.sess_lock held.
1389 */
1390 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1391 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1392 {
1393 struct se_session *se_sess = sess->se_sess;
1394 unsigned char be_sid[3];
1395
1396 be_sid[0] = sess->d_id.b.domain;
1397 be_sid[1] = sess->d_id.b.area;
1398 be_sid[2] = sess->d_id.b.al_pa;
1399
1400 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1401 sess, be_sid);
1402 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1403 sess, sess->loop_id);
1404 }
1405
1406 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1407 {
1408 struct qla_tgt *tgt = sess->tgt;
1409 struct qla_hw_data *ha = tgt->ha;
1410 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1411 struct se_session *se_sess;
1412 struct tcm_qla2xxx_lport *lport;
1413
1414 BUG_ON(in_interrupt());
1415
1416 se_sess = sess->se_sess;
1417 if (!se_sess) {
1418 pr_err("struct fc_port->se_sess is NULL\n");
1419 dump_stack();
1420 return;
1421 }
1422
1423 lport = vha->vha_tgt.target_lport_ptr;
1424 if (!lport) {
1425 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1426 dump_stack();
1427 return;
1428 }
1429 target_wait_for_sess_cmds(se_sess);
1430
1431 target_remove_session(se_sess);
1432 }
1433
1434 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1435 struct se_session *se_sess, void *p)
1436 {
1437 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1438 struct tcm_qla2xxx_tpg, se_tpg);
1439 struct tcm_qla2xxx_lport *lport = tpg->lport;
1440 struct qla_hw_data *ha = lport->qla_vha->hw;
1441 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1442 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1443 struct tcm_qla2xxx_nacl, se_node_acl);
1444 struct fc_port *qlat_sess = p;
1445 uint16_t loop_id = qlat_sess->loop_id;
1446 unsigned long flags;
1447 unsigned char be_sid[3];
1448
1449 be_sid[0] = qlat_sess->d_id.b.domain;
1450 be_sid[1] = qlat_sess->d_id.b.area;
1451 be_sid[2] = qlat_sess->d_id.b.al_pa;
1452
1453 /*
1454 * And now setup se_nacl and session pointers into HW lport internal
1455 * mappings for fabric S_ID and LOOP_ID.
1456 */
1457 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1458 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1459 se_sess, qlat_sess, be_sid);
1460 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1461 se_sess, qlat_sess, loop_id);
1462 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1463
1464 return 0;
1465 }
1466
1467 /*
1468 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1469 * to locate struct se_node_acl
1470 */
1471 static int tcm_qla2xxx_check_initiator_node_acl(
1472 scsi_qla_host_t *vha,
1473 unsigned char *fc_wwpn,
1474 struct fc_port *qlat_sess)
1475 {
1476 struct qla_hw_data *ha = vha->hw;
1477 struct tcm_qla2xxx_lport *lport;
1478 struct tcm_qla2xxx_tpg *tpg;
1479 struct se_session *se_sess;
1480 unsigned char port_name[36];
1481 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1482 TCM_QLA2XXX_DEFAULT_TAGS;
1483
1484 lport = vha->vha_tgt.target_lport_ptr;
1485 if (!lport) {
1486 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1487 dump_stack();
1488 return -EINVAL;
1489 }
1490 /*
1491 * Locate the TPG=1 reference..
1492 */
1493 tpg = lport->tpg_1;
1494 if (!tpg) {
1495 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1496 return -EINVAL;
1497 }
1498 /*
1499 * Format the FCP Initiator port_name into colon seperated values to
1500 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1501 */
1502 memset(&port_name, 0, 36);
1503 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1504 /*
1505 * Locate our struct se_node_acl either from an explict NodeACL created
1506 * via ConfigFS, or via running in TPG demo mode.
1507 */
1508 se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1509 sizeof(struct qla_tgt_cmd),
1510 TARGET_PROT_ALL, port_name,
1511 qlat_sess, tcm_qla2xxx_session_cb);
1512 if (IS_ERR(se_sess))
1513 return PTR_ERR(se_sess);
1514
1515 return 0;
1516 }
1517
1518 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1519 uint16_t loop_id, bool conf_compl_supported)
1520 {
1521 struct qla_tgt *tgt = sess->tgt;
1522 struct qla_hw_data *ha = tgt->ha;
1523 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1524 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1525 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1526 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1527 struct tcm_qla2xxx_nacl, se_node_acl);
1528 u32 key;
1529
1530
1531 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1532 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1533 sess, sess->port_name,
1534 sess->loop_id, loop_id, sess->d_id.b.domain,
1535 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1536 s_id.b.area, s_id.b.al_pa);
1537
1538 if (sess->loop_id != loop_id) {
1539 /*
1540 * Because we can shuffle loop IDs around and we
1541 * update different sessions non-atomically, we might
1542 * have overwritten this session's old loop ID
1543 * already, and we might end up overwriting some other
1544 * session that will be updated later. So we have to
1545 * be extra careful and we can't warn about those things...
1546 */
1547 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1548 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1549
1550 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1551
1552 sess->loop_id = loop_id;
1553 }
1554
1555 if (sess->d_id.b24 != s_id.b24) {
1556 key = (((u32) sess->d_id.b.domain << 16) |
1557 ((u32) sess->d_id.b.area << 8) |
1558 ((u32) sess->d_id.b.al_pa));
1559
1560 if (btree_lookup32(&lport->lport_fcport_map, key))
1561 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1562 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1563 sess->d_id.b.domain, sess->d_id.b.area,
1564 sess->d_id.b.al_pa);
1565 else
1566 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1567 sess->d_id.b.domain, sess->d_id.b.area,
1568 sess->d_id.b.al_pa);
1569
1570 key = (((u32) s_id.b.domain << 16) |
1571 ((u32) s_id.b.area << 8) |
1572 ((u32) s_id.b.al_pa));
1573
1574 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1575 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1576 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1577 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1578 } else {
1579 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1580 GFP_ATOMIC);
1581 }
1582
1583 sess->d_id = s_id;
1584 nacl->nport_id = key;
1585 }
1586
1587 sess->conf_compl_supported = conf_compl_supported;
1588
1589 }
1590
1591 /*
1592 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1593 */
1594 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1595 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
1596 .handle_cmd = tcm_qla2xxx_handle_cmd,
1597 .handle_data = tcm_qla2xxx_handle_data,
1598 .handle_tmr = tcm_qla2xxx_handle_tmr,
1599 .free_cmd = tcm_qla2xxx_free_cmd,
1600 .free_mcmd = tcm_qla2xxx_free_mcmd,
1601 .free_session = tcm_qla2xxx_free_session,
1602 .update_sess = tcm_qla2xxx_update_sess,
1603 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1604 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1605 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1606 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1607 .put_sess = tcm_qla2xxx_put_sess,
1608 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1609 .get_dif_tags = tcm_qla2xxx_dif_tags,
1610 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1611 };
1612
1613 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1614 {
1615 int rc;
1616
1617 rc = btree_init32(&lport->lport_fcport_map);
1618 if (rc) {
1619 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1620 return rc;
1621 }
1622
1623 lport->lport_loopid_map =
1624 vzalloc(array_size(65536,
1625 sizeof(struct tcm_qla2xxx_fc_loopid)));
1626 if (!lport->lport_loopid_map) {
1627 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1628 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1629 btree_destroy32(&lport->lport_fcport_map);
1630 return -ENOMEM;
1631 }
1632 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1633 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1634 return 0;
1635 }
1636
1637 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1638 void *target_lport_ptr,
1639 u64 npiv_wwpn, u64 npiv_wwnn)
1640 {
1641 struct qla_hw_data *ha = vha->hw;
1642 struct tcm_qla2xxx_lport *lport =
1643 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1644 /*
1645 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1646 */
1647 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1648 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1649 lport->qla_vha = vha;
1650
1651 return 0;
1652 }
1653
1654 static struct se_wwn *tcm_qla2xxx_make_lport(
1655 struct target_fabric_configfs *tf,
1656 struct config_group *group,
1657 const char *name)
1658 {
1659 struct tcm_qla2xxx_lport *lport;
1660 u64 wwpn;
1661 int ret = -ENODEV;
1662
1663 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1664 return ERR_PTR(-EINVAL);
1665
1666 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1667 if (!lport) {
1668 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1669 return ERR_PTR(-ENOMEM);
1670 }
1671 lport->lport_wwpn = wwpn;
1672 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1673 wwpn);
1674 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1675
1676 ret = tcm_qla2xxx_init_lport(lport);
1677 if (ret != 0)
1678 goto out;
1679
1680 ret = qlt_lport_register(lport, wwpn, 0, 0,
1681 tcm_qla2xxx_lport_register_cb);
1682 if (ret != 0)
1683 goto out_lport;
1684
1685 return &lport->lport_wwn;
1686 out_lport:
1687 vfree(lport->lport_loopid_map);
1688 btree_destroy32(&lport->lport_fcport_map);
1689 out:
1690 kfree(lport);
1691 return ERR_PTR(ret);
1692 }
1693
1694 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1695 {
1696 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1697 struct tcm_qla2xxx_lport, lport_wwn);
1698 struct scsi_qla_host *vha = lport->qla_vha;
1699 struct se_node_acl *node;
1700 u32 key = 0;
1701
1702 /*
1703 * Call into qla2x_target.c LLD logic to complete the
1704 * shutdown of struct qla_tgt after the call to
1705 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1706 */
1707 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1708 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1709
1710 qlt_lport_deregister(vha);
1711
1712 vfree(lport->lport_loopid_map);
1713 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1714 btree_remove32(&lport->lport_fcport_map, key);
1715 btree_destroy32(&lport->lport_fcport_map);
1716 kfree(lport);
1717 }
1718
1719 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1720 void *target_lport_ptr,
1721 u64 npiv_wwpn, u64 npiv_wwnn)
1722 {
1723 struct fc_vport *vport;
1724 struct Scsi_Host *sh = base_vha->host;
1725 struct scsi_qla_host *npiv_vha;
1726 struct tcm_qla2xxx_lport *lport =
1727 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1728 struct tcm_qla2xxx_lport *base_lport =
1729 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1730 struct fc_vport_identifiers vport_id;
1731
1732 if (qla_ini_mode_enabled(base_vha)) {
1733 pr_err("qla2xxx base_vha not enabled for target mode\n");
1734 return -EPERM;
1735 }
1736
1737 if (!base_lport || !base_lport->tpg_1 ||
1738 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1739 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1740 return -EPERM;
1741 }
1742
1743 memset(&vport_id, 0, sizeof(vport_id));
1744 vport_id.port_name = npiv_wwpn;
1745 vport_id.node_name = npiv_wwnn;
1746 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1747 vport_id.vport_type = FC_PORTTYPE_NPIV;
1748 vport_id.disable = false;
1749
1750 vport = fc_vport_create(sh, 0, &vport_id);
1751 if (!vport) {
1752 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1753 return -ENODEV;
1754 }
1755 /*
1756 * Setup local pointer to NPIV vhba + target_lport_ptr
1757 */
1758 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1759 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1760 lport->qla_vha = npiv_vha;
1761 scsi_host_get(npiv_vha->host);
1762 return 0;
1763 }
1764
1765
1766 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1767 struct target_fabric_configfs *tf,
1768 struct config_group *group,
1769 const char *name)
1770 {
1771 struct tcm_qla2xxx_lport *lport;
1772 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1773 char *p, tmp[128];
1774 int ret;
1775
1776 snprintf(tmp, 128, "%s", name);
1777
1778 p = strchr(tmp, '@');
1779 if (!p) {
1780 pr_err("Unable to locate NPIV '@' separator\n");
1781 return ERR_PTR(-EINVAL);
1782 }
1783 *p++ = '\0';
1784
1785 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1786 return ERR_PTR(-EINVAL);
1787
1788 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1789 &npiv_wwpn, &npiv_wwnn) < 0)
1790 return ERR_PTR(-EINVAL);
1791
1792 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1793 if (!lport) {
1794 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1795 return ERR_PTR(-ENOMEM);
1796 }
1797 lport->lport_npiv_wwpn = npiv_wwpn;
1798 lport->lport_npiv_wwnn = npiv_wwnn;
1799 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1800
1801 ret = tcm_qla2xxx_init_lport(lport);
1802 if (ret != 0)
1803 goto out;
1804
1805 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1806 tcm_qla2xxx_lport_register_npiv_cb);
1807 if (ret != 0)
1808 goto out_lport;
1809
1810 return &lport->lport_wwn;
1811 out_lport:
1812 vfree(lport->lport_loopid_map);
1813 btree_destroy32(&lport->lport_fcport_map);
1814 out:
1815 kfree(lport);
1816 return ERR_PTR(ret);
1817 }
1818
1819 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1820 {
1821 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1822 struct tcm_qla2xxx_lport, lport_wwn);
1823 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1824 struct qla_hw_data *ha = npiv_vha->hw;
1825 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1826
1827 scsi_host_put(npiv_vha->host);
1828 /*
1829 * Notify libfc that we want to release the vha->fc_vport
1830 */
1831 fc_vport_terminate(npiv_vha->fc_vport);
1832 scsi_host_put(base_vha->host);
1833 kfree(lport);
1834 }
1835
1836
1837 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1838 char *page)
1839 {
1840 return sprintf(page,
1841 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1842 QLA2XXX_VERSION, utsname()->sysname,
1843 utsname()->machine, utsname()->release);
1844 }
1845
1846 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1847
1848 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1849 &tcm_qla2xxx_wwn_attr_version,
1850 NULL,
1851 };
1852
1853 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1854 .module = THIS_MODULE,
1855 .name = "qla2xxx",
1856 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1857 /*
1858 * XXX: Limit assumes single page per scatter-gather-list entry.
1859 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1860 */
1861 .max_data_sg_nents = 1200,
1862 .get_fabric_name = tcm_qla2xxx_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 =
1868 tcm_qla2xxx_check_demo_write_protect,
1869 .tpg_check_prod_mode_write_protect =
1870 tcm_qla2xxx_check_prod_write_protect,
1871 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1872 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1873 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1874 .check_stop_free = tcm_qla2xxx_check_stop_free,
1875 .release_cmd = tcm_qla2xxx_release_cmd,
1876 .close_session = tcm_qla2xxx_close_session,
1877 .sess_get_index = tcm_qla2xxx_sess_get_index,
1878 .sess_get_initiator_sid = NULL,
1879 .write_pending = tcm_qla2xxx_write_pending,
1880 .write_pending_status = tcm_qla2xxx_write_pending_status,
1881 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1882 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1883 .queue_data_in = tcm_qla2xxx_queue_data_in,
1884 .queue_status = tcm_qla2xxx_queue_status,
1885 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1886 .aborted_task = tcm_qla2xxx_aborted_task,
1887 /*
1888 * Setup function pointers for generic logic in
1889 * target_core_fabric_configfs.c
1890 */
1891 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1892 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1893 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1894 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1895 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1896
1897 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1898 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1899 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1900 };
1901
1902 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1903 .module = THIS_MODULE,
1904 .name = "qla2xxx_npiv",
1905 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1906 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1907 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1908 .tpg_get_tag = tcm_qla2xxx_get_tag,
1909 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1910 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1911 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1912 .tpg_check_prod_mode_write_protect =
1913 tcm_qla2xxx_check_prod_write_protect,
1914 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1915 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1916 .check_stop_free = tcm_qla2xxx_check_stop_free,
1917 .release_cmd = tcm_qla2xxx_release_cmd,
1918 .close_session = tcm_qla2xxx_close_session,
1919 .sess_get_index = tcm_qla2xxx_sess_get_index,
1920 .sess_get_initiator_sid = NULL,
1921 .write_pending = tcm_qla2xxx_write_pending,
1922 .write_pending_status = tcm_qla2xxx_write_pending_status,
1923 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1924 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1925 .queue_data_in = tcm_qla2xxx_queue_data_in,
1926 .queue_status = tcm_qla2xxx_queue_status,
1927 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1928 .aborted_task = tcm_qla2xxx_aborted_task,
1929 /*
1930 * Setup function pointers for generic logic in
1931 * target_core_fabric_configfs.c
1932 */
1933 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1934 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1935 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1936 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1937 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1938
1939 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1940 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1941 };
1942
1943 static int tcm_qla2xxx_register_configfs(void)
1944 {
1945 int ret;
1946
1947 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1948 QLA2XXX_VERSION, utsname()->sysname,
1949 utsname()->machine, utsname()->release);
1950
1951 ret = target_register_template(&tcm_qla2xxx_ops);
1952 if (ret)
1953 return ret;
1954
1955 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1956 if (ret)
1957 goto out_fabric;
1958
1959 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1960 WQ_MEM_RECLAIM, 0);
1961 if (!tcm_qla2xxx_free_wq) {
1962 ret = -ENOMEM;
1963 goto out_fabric_npiv;
1964 }
1965
1966 return 0;
1967
1968 out_fabric_npiv:
1969 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1970 out_fabric:
1971 target_unregister_template(&tcm_qla2xxx_ops);
1972 return ret;
1973 }
1974
1975 static void tcm_qla2xxx_deregister_configfs(void)
1976 {
1977 destroy_workqueue(tcm_qla2xxx_free_wq);
1978
1979 target_unregister_template(&tcm_qla2xxx_ops);
1980 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1981 }
1982
1983 static int __init tcm_qla2xxx_init(void)
1984 {
1985 int ret;
1986
1987 ret = tcm_qla2xxx_register_configfs();
1988 if (ret < 0)
1989 return ret;
1990
1991 return 0;
1992 }
1993
1994 static void __exit tcm_qla2xxx_exit(void)
1995 {
1996 tcm_qla2xxx_deregister_configfs();
1997 }
1998
1999 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
2000 MODULE_LICENSE("GPL");
2001 module_init(tcm_qla2xxx_init);
2002 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support