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WIP FPC-III support
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blobb55fc768a2a7a08e00615cde02a22c980ea3f4f6
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3 * This file contains tcm implementation using v4 configfs fabric infrastructure
4 * for QLogic target mode HBAs
5 *
6 * (c) Copyright 2010-2013 Datera, Inc.
7 *
8 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 *
10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
11 * the TCM_FC / Open-FCoE.org fabric module.
12 *
13 * Copyright (c) 2010 Cisco Systems, Inc
14 *
15 ****************************************************************************/
16
17
18 #include <linux/module.h>
19 #include <linux/utsname.h>
20 #include <linux/vmalloc.h>
21 #include <linux/list.h>
22 #include <linux/slab.h>
23 #include <linux/types.h>
24 #include <linux/string.h>
25 #include <linux/configfs.h>
26 #include <linux/ctype.h>
27 #include <asm/unaligned.h>
28 #include <scsi/scsi_host.h>
29 #include <target/target_core_base.h>
30 #include <target/target_core_fabric.h>
31
32 #include "qla_def.h"
33 #include "qla_target.h"
34 #include "tcm_qla2xxx.h"
35
36 static struct workqueue_struct *tcm_qla2xxx_free_wq;
37
38 /*
39 * Parse WWN.
40 * If strict, we require lower-case hex and colon separators to be sure
41 * the name is the same as what would be generated by ft_format_wwn()
42 * so the name and wwn are mapped one-to-one.
43 */
44 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
45 {
46 const char *cp;
47 char c;
48 u32 nibble;
49 u32 byte = 0;
50 u32 pos = 0;
51 u32 err;
52
53 *wwn = 0;
54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
55 c = *cp;
56 if (c == '\n' && cp[1] == '\0')
57 continue;
58 if (strict && pos++ == 2 && byte++ < 7) {
59 pos = 0;
60 if (c == ':')
61 continue;
62 err = 1;
63 goto fail;
64 }
65 if (c == '\0') {
66 err = 2;
67 if (strict && byte != 8)
68 goto fail;
69 return cp - name;
70 }
71 err = 3;
72 if (isdigit(c))
73 nibble = c - '0';
74 else if (isxdigit(c) && (islower(c) || !strict))
75 nibble = tolower(c) - 'a' + 10;
76 else
77 goto fail;
78 *wwn = (*wwn << 4) | nibble;
79 }
80 err = 4;
81 fail:
82 pr_debug("err %u len %zu pos %u byte %u\n",
83 err, cp - name, pos, byte);
84 return -1;
85 }
86
87 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
88 {
89 u8 b[8];
90
91 put_unaligned_be64(wwn, b);
92 return snprintf(buf, len,
93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
95 }
96
97 /*
98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
99 */
100 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
101 {
102 unsigned int i, j;
103 u8 wwn[8];
104
105 memset(wwn, 0, sizeof(wwn));
106
107 /* Validate and store the new name */
108 for (i = 0, j = 0; i < 16; i++) {
109 int value;
110
111 value = hex_to_bin(*ns++);
112 if (value >= 0)
113 j = (j << 4) | value;
114 else
115 return -EINVAL;
116
117 if (i % 2) {
118 wwn[i/2] = j & 0xff;
119 j = 0;
120 }
121 }
122
123 *nm = wwn_to_u64(wwn);
124 return 0;
125 }
126
127 /*
128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
129 * store_fc_host_vport_create()
130 */
131 static int tcm_qla2xxx_npiv_parse_wwn(
132 const char *name,
133 size_t count,
134 u64 *wwpn,
135 u64 *wwnn)
136 {
137 unsigned int cnt = count;
138 int rc;
139
140 *wwpn = 0;
141 *wwnn = 0;
142
143 /* count may include a LF at end of string */
144 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
145 cnt--;
146
147 /* validate we have enough characters for WWPN */
148 if ((cnt != (16+1+16)) || (name[16] != ':'))
149 return -EINVAL;
150
151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
152 if (rc != 0)
153 return rc;
154
155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
156 if (rc != 0)
157 return rc;
158
159 return 0;
160 }
161
162 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
163 {
164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
165 struct tcm_qla2xxx_tpg, se_tpg);
166 struct tcm_qla2xxx_lport *lport = tpg->lport;
167
168 return lport->lport_naa_name;
169 }
170
171 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
172 {
173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
174 struct tcm_qla2xxx_tpg, se_tpg);
175 return tpg->lport_tpgt;
176 }
177
178 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
179 {
180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
181 struct tcm_qla2xxx_tpg, se_tpg);
182
183 return tpg->tpg_attrib.generate_node_acls;
184 }
185
186 static int tcm_qla2xxx_check_demo_mode_cache(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
191 return tpg->tpg_attrib.cache_dynamic_acls;
192 }
193
194 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
195 {
196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
197 struct tcm_qla2xxx_tpg, se_tpg);
198
199 return tpg->tpg_attrib.demo_mode_write_protect;
200 }
201
202 static int tcm_qla2xxx_check_prod_write_protect(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.prod_mode_write_protect;
208 }
209
210 static int tcm_qla2xxx_check_demo_mode_login_only(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.demo_mode_login_only;
216 }
217
218 static int tcm_qla2xxx_check_prot_fabric_only(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.fabric_prot_type;
224 }
225
226 static u32 tcm_qla2xxx_tpg_get_inst_index(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->lport_tpgt;
232 }
233
234 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
235 {
236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
237 struct qla_tgt_mgmt_cmd, free_work);
238
239 transport_generic_free_cmd(&mcmd->se_cmd, 0);
240 }
241
242 /*
243 * Called from qla_target_template->free_mcmd(), and will call
244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
245 * release callback. qla_hw_data->hardware_lock is expected to be held
246 */
247 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
248 {
249 if (!mcmd)
250 return;
251 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
252 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
253 }
254
255 static void tcm_qla2xxx_complete_free(struct work_struct *work)
256 {
257 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
258 unsigned long flags;
259
260 cmd->cmd_in_wq = 0;
261
262 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
263
264 /* To do: protect all tgt_counters manipulations with proper locking. */
265 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
266 cmd->trc_flags |= TRC_CMD_FREE;
267 cmd->cmd_sent_to_fw = 0;
268
269 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);
270 list_del_init(&cmd->sess_cmd_list);
271 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);
272
273 transport_generic_free_cmd(&cmd->se_cmd, 0);
274 }
275
276 static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess)
277 {
278 struct se_session *se_sess = sess->se_sess;
279 struct qla_tgt_cmd *cmd;
280 int tag, cpu;
281
282 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
283 if (tag < 0)
284 return NULL;
285
286 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
287 memset(cmd, 0, sizeof(struct qla_tgt_cmd));
288 cmd->se_cmd.map_tag = tag;
289 cmd->se_cmd.map_cpu = cpu;
290
291 return cmd;
292 }
293
294 static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd)
295 {
296 target_free_tag(cmd->sess->se_sess, &cmd->se_cmd);
297 }
298
299 /*
300 * Called from qla_target_template->free_cmd(), and will call
301 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
302 * release callback. qla_hw_data->hardware_lock is expected to be held
303 */
304 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
305 {
306 cmd->qpair->tgt_counters.core_qla_free_cmd++;
307 cmd->cmd_in_wq = 1;
308
309 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
310 cmd->trc_flags |= TRC_CMD_DONE;
311
312 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
313 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
314 }
315
316 /*
317 * Called from struct target_core_fabric_ops->check_stop_free() context
318 */
319 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
320 {
321 struct qla_tgt_cmd *cmd;
322
323 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
324 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
325 cmd->trc_flags |= TRC_CMD_CHK_STOP;
326 }
327
328 return target_put_sess_cmd(se_cmd);
329 }
330
331 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
332 * fabric descriptor @se_cmd command to release
333 */
334 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
335 {
336 struct qla_tgt_cmd *cmd;
337
338 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
339 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
340 struct qla_tgt_mgmt_cmd, se_cmd);
341 qlt_free_mcmd(mcmd);
342 return;
343 }
344 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
345
346 if (WARN_ON(cmd->cmd_sent_to_fw))
347 return;
348
349 qlt_free_cmd(cmd);
350 }
351
352 static void tcm_qla2xxx_release_session(struct kref *kref)
353 {
354 struct fc_port *sess = container_of(kref,
355 struct fc_port, sess_kref);
356
357 qlt_unreg_sess(sess);
358 }
359
360 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
361 {
362 if (!sess)
363 return;
364
365 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
366 }
367
368 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
369 {
370 struct fc_port *sess = se_sess->fabric_sess_ptr;
371
372 BUG_ON(!sess);
373
374 target_stop_session(se_sess);
375
376 sess->explicit_logout = 1;
377 tcm_qla2xxx_put_sess(sess);
378 }
379
380 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
381 {
382 return 0;
383 }
384
385 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
386 {
387 struct qla_tgt_cmd *cmd = container_of(se_cmd,
388 struct qla_tgt_cmd, se_cmd);
389
390 if (cmd->aborted) {
391 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
392 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
393 * already kick start the free.
394 */
395 pr_debug("write_pending aborted cmd[%p] refcount %d "
396 "transport_state %x, t_state %x, se_cmd_flags %x\n",
397 cmd, kref_read(&cmd->se_cmd.cmd_kref),
398 cmd->se_cmd.transport_state,
399 cmd->se_cmd.t_state,
400 cmd->se_cmd.se_cmd_flags);
401 transport_generic_request_failure(&cmd->se_cmd,
402 TCM_CHECK_CONDITION_ABORT_CMD);
403 return 0;
404 }
405 cmd->trc_flags |= TRC_XFR_RDY;
406 cmd->bufflen = se_cmd->data_length;
407 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
408
409 cmd->sg_cnt = se_cmd->t_data_nents;
410 cmd->sg = se_cmd->t_data_sg;
411
412 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
413 cmd->prot_sg = se_cmd->t_prot_sg;
414 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
415 se_cmd->pi_err = 0;
416
417 /*
418 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
419 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
420 */
421 return qlt_rdy_to_xfer(cmd);
422 }
423
424 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
425 {
426 return;
427 }
428
429 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
430 {
431 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
432 struct qla_tgt_cmd *cmd = container_of(se_cmd,
433 struct qla_tgt_cmd, se_cmd);
434 return cmd->state;
435 }
436
437 return 0;
438 }
439
440 /*
441 * Called from process context in qla_target.c:qlt_do_work() code
442 */
443 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
444 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
445 int data_dir, int bidi)
446 {
447 struct se_cmd *se_cmd = &cmd->se_cmd;
448 struct se_session *se_sess;
449 struct fc_port *sess;
450 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
451 struct se_portal_group *se_tpg;
452 struct tcm_qla2xxx_tpg *tpg;
453 #endif
454 int target_flags = TARGET_SCF_ACK_KREF;
455 unsigned long flags;
456
457 if (bidi)
458 target_flags |= TARGET_SCF_BIDI_OP;
459
460 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
461 target_flags |= TARGET_SCF_USE_CPUID;
462
463 sess = cmd->sess;
464 if (!sess) {
465 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
466 return -EINVAL;
467 }
468
469 se_sess = sess->se_sess;
470 if (!se_sess) {
471 pr_err("Unable to locate active struct se_session\n");
472 return -EINVAL;
473 }
474
475 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
476 se_tpg = se_sess->se_tpg;
477 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
478 if (unlikely(tpg->tpg_attrib.jam_host)) {
479 /* return, and dont run target_submit_cmd,discarding command */
480 return 0;
481 }
482 #endif
483 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
484
485 spin_lock_irqsave(&sess->sess_cmd_lock, flags);
486 list_add_tail(&cmd->sess_cmd_list, &sess->sess_cmd_list);
487 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);
488
489 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
490 cmd->unpacked_lun, data_length, fcp_task_attr,
491 data_dir, target_flags);
492 }
493
494 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
495 {
496 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
497
498 /*
499 * Ensure that the complete FCP WRITE payload has been received.
500 * Otherwise return an exception via CHECK_CONDITION status.
501 */
502 cmd->cmd_in_wq = 0;
503 cmd->cmd_sent_to_fw = 0;
504 if (cmd->aborted) {
505 transport_generic_request_failure(&cmd->se_cmd,
506 TCM_CHECK_CONDITION_ABORT_CMD);
507 return;
508 }
509
510 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
511 if (!cmd->write_data_transferred) {
512 switch (cmd->dif_err_code) {
513 case DIF_ERR_GRD:
514 cmd->se_cmd.pi_err =
515 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
516 break;
517 case DIF_ERR_REF:
518 cmd->se_cmd.pi_err =
519 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
520 break;
521 case DIF_ERR_APP:
522 cmd->se_cmd.pi_err =
523 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
524 break;
525 case DIF_ERR_NONE:
526 default:
527 break;
528 }
529
530 if (cmd->se_cmd.pi_err)
531 transport_generic_request_failure(&cmd->se_cmd,
532 cmd->se_cmd.pi_err);
533 else
534 transport_generic_request_failure(&cmd->se_cmd,
535 TCM_CHECK_CONDITION_ABORT_CMD);
536
537 return;
538 }
539
540 return target_execute_cmd(&cmd->se_cmd);
541 }
542
543 /*
544 * Called from qla_target.c:qlt_do_ctio_completion()
545 */
546 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
547 {
548 cmd->trc_flags |= TRC_DATA_IN;
549 cmd->cmd_in_wq = 1;
550 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
551 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
552 }
553
554 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
555 {
556 return 0;
557 }
558
559 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
560 uint16_t *pfw_prot_opts)
561 {
562 struct se_cmd *se_cmd = &cmd->se_cmd;
563
564 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
565 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
566
567 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
568 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
569
570 return 0;
571 }
572
573 /*
574 * Called from qla_target.c:qlt_issue_task_mgmt()
575 */
576 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
577 uint16_t tmr_func, uint32_t tag)
578 {
579 struct fc_port *sess = mcmd->sess;
580 struct se_cmd *se_cmd = &mcmd->se_cmd;
581 int transl_tmr_func = 0;
582
583 switch (tmr_func) {
584 case QLA_TGT_ABTS:
585 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
586 transl_tmr_func = TMR_ABORT_TASK;
587 break;
588 case QLA_TGT_2G_ABORT_TASK:
589 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
590 transl_tmr_func = TMR_ABORT_TASK;
591 break;
592 case QLA_TGT_CLEAR_ACA:
593 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
594 transl_tmr_func = TMR_CLEAR_ACA;
595 break;
596 case QLA_TGT_TARGET_RESET:
597 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
598 transl_tmr_func = TMR_TARGET_WARM_RESET;
599 break;
600 case QLA_TGT_LUN_RESET:
601 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
602 transl_tmr_func = TMR_LUN_RESET;
603 break;
604 case QLA_TGT_CLEAR_TS:
605 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
606 transl_tmr_func = TMR_CLEAR_TASK_SET;
607 break;
608 case QLA_TGT_ABORT_TS:
609 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
610 transl_tmr_func = TMR_ABORT_TASK_SET;
611 break;
612 default:
613 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
614 sess->vha->host_no, tmr_func);
615 return -ENOSYS;
616 }
617
618 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
619 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
620 }
621
622 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
623 uint64_t tag)
624 {
625 struct qla_tgt_cmd *cmd;
626 unsigned long flags;
627
628 if (!sess->se_sess)
629 return NULL;
630
631 spin_lock_irqsave(&sess->sess_cmd_lock, flags);
632 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) {
633 if (cmd->se_cmd.tag == tag)
634 goto done;
635 }
636 cmd = NULL;
637 done:
638 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);
639
640 return cmd;
641 }
642
643 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
644 {
645 struct qla_tgt_cmd *cmd = container_of(se_cmd,
646 struct qla_tgt_cmd, se_cmd);
647 struct scsi_qla_host *vha = cmd->vha;
648
649 if (cmd->aborted) {
650 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
651 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
652 * already kick start the free.
653 */
654 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
655 "transport_state %x, t_state %x, se_cmd_flags %x\n",
656 cmd, kref_read(&cmd->se_cmd.cmd_kref),
657 cmd->se_cmd.transport_state,
658 cmd->se_cmd.t_state,
659 cmd->se_cmd.se_cmd_flags);
660 vha->hw->tgt.tgt_ops->free_cmd(cmd);
661 return 0;
662 }
663
664 cmd->trc_flags |= TRC_XMIT_DATA;
665 cmd->bufflen = se_cmd->data_length;
666 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
667
668 cmd->sg_cnt = se_cmd->t_data_nents;
669 cmd->sg = se_cmd->t_data_sg;
670 cmd->offset = 0;
671
672 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
673 cmd->prot_sg = se_cmd->t_prot_sg;
674 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
675 se_cmd->pi_err = 0;
676
677 /*
678 * Now queue completed DATA_IN the qla2xxx LLD and response ring
679 */
680 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
681 se_cmd->scsi_status);
682 }
683
684 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
685 {
686 struct qla_tgt_cmd *cmd = container_of(se_cmd,
687 struct qla_tgt_cmd, se_cmd);
688 struct scsi_qla_host *vha = cmd->vha;
689 int xmit_type = QLA_TGT_XMIT_STATUS;
690
691 if (cmd->aborted) {
692 /*
693 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
694 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
695 * already kick start the free.
696 */
697 pr_debug(
698 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
699 cmd, kref_read(&cmd->se_cmd.cmd_kref),
700 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
701 cmd->se_cmd.se_cmd_flags);
702 vha->hw->tgt.tgt_ops->free_cmd(cmd);
703 return 0;
704 }
705 cmd->bufflen = se_cmd->data_length;
706 cmd->sg = NULL;
707 cmd->sg_cnt = 0;
708 cmd->offset = 0;
709 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
710 cmd->trc_flags |= TRC_XMIT_STATUS;
711
712 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
713 /*
714 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
715 * for qla_tgt_xmit_response LLD code
716 */
717 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
718 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
719 se_cmd->residual_count = 0;
720 }
721 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
722 se_cmd->residual_count += se_cmd->data_length;
723
724 cmd->bufflen = 0;
725 }
726 /*
727 * Now queue status response to qla2xxx LLD code and response ring
728 */
729 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
730 }
731
732 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
733 {
734 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
735 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
736 struct qla_tgt_mgmt_cmd, se_cmd);
737
738 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
739 mcmd, se_tmr->function, se_tmr->response);
740 /*
741 * Do translation between TCM TM response codes and
742 * QLA2xxx FC TM response codes.
743 */
744 switch (se_tmr->response) {
745 case TMR_FUNCTION_COMPLETE:
746 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
747 break;
748 case TMR_TASK_DOES_NOT_EXIST:
749 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
750 break;
751 case TMR_FUNCTION_REJECTED:
752 mcmd->fc_tm_rsp = FC_TM_REJECT;
753 break;
754 case TMR_LUN_DOES_NOT_EXIST:
755 default:
756 mcmd->fc_tm_rsp = FC_TM_FAILED;
757 break;
758 }
759 /*
760 * Queue the TM response to QLA2xxx LLD to build a
761 * CTIO response packet.
762 */
763 qlt_xmit_tm_rsp(mcmd);
764 }
765
766 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
767 {
768 struct qla_tgt_cmd *cmd;
769 unsigned long flags;
770
771 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
772 return;
773
774 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
775
776 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);
777 list_del_init(&cmd->sess_cmd_list);
778 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);
779
780 qlt_abort_cmd(cmd);
781 }
782
783 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
784 struct tcm_qla2xxx_nacl *, struct fc_port *);
785 /*
786 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
787 */
788 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
789 {
790 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
791 struct se_portal_group *se_tpg = se_nacl->se_tpg;
792 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
793 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
794 struct tcm_qla2xxx_lport, lport_wwn);
795 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
796 struct tcm_qla2xxx_nacl, se_node_acl);
797 void *node;
798
799 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
800
801 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
802 if (WARN_ON(node && (node != se_nacl))) {
803 /*
804 * The nacl no longer matches what we think it should be.
805 * Most likely a new dynamic acl has been added while
806 * someone dropped the hardware lock. It clearly is a
807 * bug elsewhere, but this bit can't make things worse.
808 */
809 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
810 node, GFP_ATOMIC);
811 }
812
813 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
814 se_nacl, nacl->nport_wwnn, nacl->nport_id);
815 /*
816 * Now clear the se_nacl and session pointers from our HW lport lookup
817 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
818 *
819 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
820 * target_wait_for_sess_cmds() before the session waits for outstanding
821 * I/O to complete, to avoid a race between session shutdown execution
822 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
823 */
824 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
825 }
826
827 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
828 {
829 target_stop_session(sess->se_sess);
830 }
831
832 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
833 const char *name)
834 {
835 struct tcm_qla2xxx_nacl *nacl =
836 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
837 u64 wwnn;
838
839 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
840 return -EINVAL;
841
842 nacl->nport_wwnn = wwnn;
843 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
844
845 return 0;
846 }
847
848 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
849
850 #define DEF_QLA_TPG_ATTRIB(name) \
851 \
852 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
853 struct config_item *item, char *page) \
854 { \
855 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
856 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
857 struct tcm_qla2xxx_tpg, se_tpg); \
858 \
859 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \
860 } \
861 \
862 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
863 struct config_item *item, const char *page, size_t count) \
864 { \
865 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
866 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
867 struct tcm_qla2xxx_tpg, se_tpg); \
868 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
869 unsigned long val; \
870 int ret; \
871 \
872 ret = kstrtoul(page, 0, &val); \
873 if (ret < 0) { \
874 pr_err("kstrtoul() failed with" \
875 " ret: %d\n", ret); \
876 return -EINVAL; \
877 } \
878 \
879 if ((val != 0) && (val != 1)) { \
880 pr_err("Illegal boolean value %lu\n", val); \
881 return -EINVAL; \
882 } \
883 \
884 a->name = val; \
885 \
886 return count; \
887 } \
888 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
889
890 DEF_QLA_TPG_ATTRIB(generate_node_acls);
891 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
892 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
893 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
894 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
895 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
896 DEF_QLA_TPG_ATTRIB(jam_host);
897 #endif
898
899 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
900 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
901 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
902 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
903 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
904 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
905 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
906 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
907 #endif
908 NULL,
909 };
910
911 /* End items for tcm_qla2xxx_tpg_attrib_cit */
912
913 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
914 char *page)
915 {
916 struct se_portal_group *se_tpg = to_tpg(item);
917 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
918 struct tcm_qla2xxx_tpg, se_tpg);
919
920 return snprintf(page, PAGE_SIZE, "%d\n",
921 atomic_read(&tpg->lport_tpg_enabled));
922 }
923
924 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
925 const char *page, size_t count)
926 {
927 struct se_portal_group *se_tpg = to_tpg(item);
928 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
929 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
930 struct tcm_qla2xxx_lport, lport_wwn);
931 struct scsi_qla_host *vha = lport->qla_vha;
932 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
933 struct tcm_qla2xxx_tpg, se_tpg);
934 unsigned long op;
935 int rc;
936
937 rc = kstrtoul(page, 0, &op);
938 if (rc < 0) {
939 pr_err("kstrtoul() returned %d\n", rc);
940 return -EINVAL;
941 }
942 if ((op != 1) && (op != 0)) {
943 pr_err("Illegal value for tpg_enable: %lu\n", op);
944 return -EINVAL;
945 }
946 if (op) {
947 if (atomic_read(&tpg->lport_tpg_enabled))
948 return -EEXIST;
949
950 atomic_set(&tpg->lport_tpg_enabled, 1);
951 qlt_enable_vha(vha);
952 } else {
953 if (!atomic_read(&tpg->lport_tpg_enabled))
954 return count;
955
956 atomic_set(&tpg->lport_tpg_enabled, 0);
957 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
958 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
959 }
960
961 return count;
962 }
963
964 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
965 char *page)
966 {
967 return target_show_dynamic_sessions(to_tpg(item), page);
968 }
969
970 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
971 const char *page, size_t count)
972 {
973 struct se_portal_group *se_tpg = to_tpg(item);
974 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
975 struct tcm_qla2xxx_tpg, se_tpg);
976 unsigned long val;
977 int ret = kstrtoul(page, 0, &val);
978
979 if (ret) {
980 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
981 return ret;
982 }
983 if (val != 0 && val != 1 && val != 3) {
984 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
985 return -EINVAL;
986 }
987 tpg->tpg_attrib.fabric_prot_type = val;
988
989 return count;
990 }
991
992 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
993 char *page)
994 {
995 struct se_portal_group *se_tpg = to_tpg(item);
996 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
997 struct tcm_qla2xxx_tpg, se_tpg);
998
999 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1000 }
1001
1002 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
1003 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
1004 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
1005
1006 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1007 &tcm_qla2xxx_tpg_attr_enable,
1008 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1009 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1010 NULL,
1011 };
1012
1013 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
1014 const char *name)
1015 {
1016 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1017 struct tcm_qla2xxx_lport, lport_wwn);
1018 struct tcm_qla2xxx_tpg *tpg;
1019 unsigned long tpgt;
1020 int ret;
1021
1022 if (strstr(name, "tpgt_") != name)
1023 return ERR_PTR(-EINVAL);
1024 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1025 return ERR_PTR(-EINVAL);
1026
1027 if ((tpgt != 1)) {
1028 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1029 return ERR_PTR(-ENOSYS);
1030 }
1031
1032 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1033 if (!tpg) {
1034 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1035 return ERR_PTR(-ENOMEM);
1036 }
1037 tpg->lport = lport;
1038 tpg->lport_tpgt = tpgt;
1039 /*
1040 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1041 * NodeACLs
1042 */
1043 tpg->tpg_attrib.generate_node_acls = 1;
1044 tpg->tpg_attrib.demo_mode_write_protect = 1;
1045 tpg->tpg_attrib.cache_dynamic_acls = 1;
1046 tpg->tpg_attrib.demo_mode_login_only = 1;
1047 tpg->tpg_attrib.jam_host = 0;
1048
1049 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1050 if (ret < 0) {
1051 kfree(tpg);
1052 return NULL;
1053 }
1054
1055 lport->tpg_1 = tpg;
1056
1057 return &tpg->se_tpg;
1058 }
1059
1060 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1061 {
1062 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1063 struct tcm_qla2xxx_tpg, se_tpg);
1064 struct tcm_qla2xxx_lport *lport = tpg->lport;
1065 struct scsi_qla_host *vha = lport->qla_vha;
1066 /*
1067 * Call into qla2x_target.c LLD logic to shutdown the active
1068 * FC Nexuses and disable target mode operation for this qla_hw_data
1069 */
1070 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1071 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1072
1073 core_tpg_deregister(se_tpg);
1074 /*
1075 * Clear local TPG=1 pointer for non NPIV mode.
1076 */
1077 lport->tpg_1 = NULL;
1078 kfree(tpg);
1079 }
1080
1081 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1082 char *page)
1083 {
1084 return tcm_qla2xxx_tpg_enable_show(item, page);
1085 }
1086
1087 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1088 const char *page, size_t count)
1089 {
1090 struct se_portal_group *se_tpg = to_tpg(item);
1091 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1092 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1093 struct tcm_qla2xxx_lport, lport_wwn);
1094 struct scsi_qla_host *vha = lport->qla_vha;
1095 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1096 struct tcm_qla2xxx_tpg, se_tpg);
1097 unsigned long op;
1098 int rc;
1099
1100 rc = kstrtoul(page, 0, &op);
1101 if (rc < 0) {
1102 pr_err("kstrtoul() returned %d\n", rc);
1103 return -EINVAL;
1104 }
1105 if ((op != 1) && (op != 0)) {
1106 pr_err("Illegal value for tpg_enable: %lu\n", op);
1107 return -EINVAL;
1108 }
1109 if (op) {
1110 if (atomic_read(&tpg->lport_tpg_enabled))
1111 return -EEXIST;
1112
1113 atomic_set(&tpg->lport_tpg_enabled, 1);
1114 qlt_enable_vha(vha);
1115 } else {
1116 if (!atomic_read(&tpg->lport_tpg_enabled))
1117 return count;
1118
1119 atomic_set(&tpg->lport_tpg_enabled, 0);
1120 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1121 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1122 }
1123
1124 return count;
1125 }
1126
1127 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1128
1129 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1130 &tcm_qla2xxx_npiv_tpg_attr_enable,
1131 NULL,
1132 };
1133
1134 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
1135 const char *name)
1136 {
1137 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1138 struct tcm_qla2xxx_lport, lport_wwn);
1139 struct tcm_qla2xxx_tpg *tpg;
1140 unsigned long tpgt;
1141 int ret;
1142
1143 if (strstr(name, "tpgt_") != name)
1144 return ERR_PTR(-EINVAL);
1145 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1146 return ERR_PTR(-EINVAL);
1147
1148 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1149 if (!tpg) {
1150 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1151 return ERR_PTR(-ENOMEM);
1152 }
1153 tpg->lport = lport;
1154 tpg->lport_tpgt = tpgt;
1155
1156 /*
1157 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1158 * NodeACLs
1159 */
1160 tpg->tpg_attrib.generate_node_acls = 1;
1161 tpg->tpg_attrib.demo_mode_write_protect = 1;
1162 tpg->tpg_attrib.cache_dynamic_acls = 1;
1163 tpg->tpg_attrib.demo_mode_login_only = 1;
1164
1165 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1166 if (ret < 0) {
1167 kfree(tpg);
1168 return NULL;
1169 }
1170 lport->tpg_1 = tpg;
1171 return &tpg->se_tpg;
1172 }
1173
1174 /*
1175 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1176 */
1177 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
1178 const be_id_t s_id)
1179 {
1180 struct tcm_qla2xxx_lport *lport;
1181 struct se_node_acl *se_nacl;
1182 struct tcm_qla2xxx_nacl *nacl;
1183 u32 key;
1184
1185 lport = vha->vha_tgt.target_lport_ptr;
1186 if (!lport) {
1187 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1188 dump_stack();
1189 return NULL;
1190 }
1191
1192 key = sid_to_key(s_id);
1193 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1194
1195 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1196 if (!se_nacl) {
1197 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1198 return NULL;
1199 }
1200 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1201 se_nacl, se_nacl->initiatorname);
1202
1203 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1204 if (!nacl->fc_port) {
1205 pr_err("Unable to locate struct fc_port\n");
1206 return NULL;
1207 }
1208
1209 return nacl->fc_port;
1210 }
1211
1212 /*
1213 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1214 */
1215 static void tcm_qla2xxx_set_sess_by_s_id(
1216 struct tcm_qla2xxx_lport *lport,
1217 struct se_node_acl *new_se_nacl,
1218 struct tcm_qla2xxx_nacl *nacl,
1219 struct se_session *se_sess,
1220 struct fc_port *fc_port,
1221 be_id_t s_id)
1222 {
1223 u32 key;
1224 void *slot;
1225 int rc;
1226
1227 key = sid_to_key(s_id);
1228 pr_debug("set_sess_by_s_id: %06x\n", key);
1229
1230 slot = btree_lookup32(&lport->lport_fcport_map, key);
1231 if (!slot) {
1232 if (new_se_nacl) {
1233 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1234 nacl->nport_id = key;
1235 rc = btree_insert32(&lport->lport_fcport_map, key,
1236 new_se_nacl, GFP_ATOMIC);
1237 if (rc)
1238 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1239 (int)key);
1240 } else {
1241 pr_debug("Wiping nonexisting fc_port entry\n");
1242 }
1243
1244 fc_port->se_sess = se_sess;
1245 nacl->fc_port = fc_port;
1246 return;
1247 }
1248
1249 if (nacl->fc_port) {
1250 if (new_se_nacl == NULL) {
1251 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1252 btree_remove32(&lport->lport_fcport_map, key);
1253 nacl->fc_port = NULL;
1254 return;
1255 }
1256 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1257 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1258 fc_port->se_sess = se_sess;
1259 nacl->fc_port = fc_port;
1260 return;
1261 }
1262
1263 if (new_se_nacl == NULL) {
1264 pr_debug("Clearing existing fc_port entry\n");
1265 btree_remove32(&lport->lport_fcport_map, key);
1266 return;
1267 }
1268
1269 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1270 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1271 fc_port->se_sess = se_sess;
1272 nacl->fc_port = fc_port;
1273
1274 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1275 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1276 }
1277
1278 /*
1279 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1280 */
1281 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1282 scsi_qla_host_t *vha,
1283 const uint16_t loop_id)
1284 {
1285 struct tcm_qla2xxx_lport *lport;
1286 struct se_node_acl *se_nacl;
1287 struct tcm_qla2xxx_nacl *nacl;
1288 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1289
1290 lport = vha->vha_tgt.target_lport_ptr;
1291 if (!lport) {
1292 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1293 dump_stack();
1294 return NULL;
1295 }
1296
1297 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1298
1299 fc_loopid = lport->lport_loopid_map + loop_id;
1300 se_nacl = fc_loopid->se_nacl;
1301 if (!se_nacl) {
1302 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1303 loop_id);
1304 return NULL;
1305 }
1306
1307 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1308
1309 if (!nacl->fc_port) {
1310 pr_err("Unable to locate struct fc_port\n");
1311 return NULL;
1312 }
1313
1314 return nacl->fc_port;
1315 }
1316
1317 /*
1318 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1319 */
1320 static void tcm_qla2xxx_set_sess_by_loop_id(
1321 struct tcm_qla2xxx_lport *lport,
1322 struct se_node_acl *new_se_nacl,
1323 struct tcm_qla2xxx_nacl *nacl,
1324 struct se_session *se_sess,
1325 struct fc_port *fc_port,
1326 uint16_t loop_id)
1327 {
1328 struct se_node_acl *saved_nacl;
1329 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1330
1331 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1332
1333 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1334 lport->lport_loopid_map)[loop_id];
1335
1336 saved_nacl = fc_loopid->se_nacl;
1337 if (!saved_nacl) {
1338 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1339 fc_loopid->se_nacl = new_se_nacl;
1340 if (fc_port->se_sess != se_sess)
1341 fc_port->se_sess = se_sess;
1342 if (nacl->fc_port != fc_port)
1343 nacl->fc_port = fc_port;
1344 return;
1345 }
1346
1347 if (nacl->fc_port) {
1348 if (new_se_nacl == NULL) {
1349 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1350 fc_loopid->se_nacl = NULL;
1351 nacl->fc_port = NULL;
1352 return;
1353 }
1354
1355 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1356 fc_loopid->se_nacl = new_se_nacl;
1357 if (fc_port->se_sess != se_sess)
1358 fc_port->se_sess = se_sess;
1359 if (nacl->fc_port != fc_port)
1360 nacl->fc_port = fc_port;
1361 return;
1362 }
1363
1364 if (new_se_nacl == NULL) {
1365 pr_debug("Clearing fc_loopid->se_nacl\n");
1366 fc_loopid->se_nacl = NULL;
1367 return;
1368 }
1369
1370 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1371 fc_loopid->se_nacl = new_se_nacl;
1372 if (fc_port->se_sess != se_sess)
1373 fc_port->se_sess = se_sess;
1374 if (nacl->fc_port != fc_port)
1375 nacl->fc_port = fc_port;
1376
1377 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1378 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1379 }
1380
1381 /*
1382 * Should always be called with qla_hw_data->tgt.sess_lock held.
1383 */
1384 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1385 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1386 {
1387 struct se_session *se_sess = sess->se_sess;
1388
1389 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1390 sess, port_id_to_be_id(sess->d_id));
1391 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1392 sess, sess->loop_id);
1393 }
1394
1395 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1396 {
1397 struct qla_tgt *tgt = sess->tgt;
1398 struct qla_hw_data *ha = tgt->ha;
1399 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1400 struct se_session *se_sess;
1401 struct tcm_qla2xxx_lport *lport;
1402
1403 se_sess = sess->se_sess;
1404 if (!se_sess) {
1405 pr_err("struct fc_port->se_sess is NULL\n");
1406 dump_stack();
1407 return;
1408 }
1409
1410 lport = vha->vha_tgt.target_lport_ptr;
1411 if (!lport) {
1412 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1413 dump_stack();
1414 return;
1415 }
1416 target_wait_for_sess_cmds(se_sess);
1417
1418 target_remove_session(se_sess);
1419 }
1420
1421 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1422 struct se_session *se_sess, void *p)
1423 {
1424 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1425 struct tcm_qla2xxx_tpg, se_tpg);
1426 struct tcm_qla2xxx_lport *lport = tpg->lport;
1427 struct qla_hw_data *ha = lport->qla_vha->hw;
1428 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1429 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1430 struct tcm_qla2xxx_nacl, se_node_acl);
1431 struct fc_port *qlat_sess = p;
1432 uint16_t loop_id = qlat_sess->loop_id;
1433 unsigned long flags;
1434
1435 /*
1436 * And now setup se_nacl and session pointers into HW lport internal
1437 * mappings for fabric S_ID and LOOP_ID.
1438 */
1439 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1440 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
1441 port_id_to_be_id(qlat_sess->d_id));
1442 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1443 se_sess, qlat_sess, loop_id);
1444 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1445
1446 return 0;
1447 }
1448
1449 /*
1450 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1451 * to locate struct se_node_acl
1452 */
1453 static int tcm_qla2xxx_check_initiator_node_acl(
1454 scsi_qla_host_t *vha,
1455 unsigned char *fc_wwpn,
1456 struct fc_port *qlat_sess)
1457 {
1458 struct qla_hw_data *ha = vha->hw;
1459 struct tcm_qla2xxx_lport *lport;
1460 struct tcm_qla2xxx_tpg *tpg;
1461 struct se_session *se_sess;
1462 unsigned char port_name[36];
1463 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1464 TCM_QLA2XXX_DEFAULT_TAGS;
1465
1466 lport = vha->vha_tgt.target_lport_ptr;
1467 if (!lport) {
1468 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1469 dump_stack();
1470 return -EINVAL;
1471 }
1472 /*
1473 * Locate the TPG=1 reference..
1474 */
1475 tpg = lport->tpg_1;
1476 if (!tpg) {
1477 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
1478 return -EINVAL;
1479 }
1480 /*
1481 * Format the FCP Initiator port_name into colon seperated values to
1482 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1483 */
1484 memset(&port_name, 0, 36);
1485 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1486 /*
1487 * Locate our struct se_node_acl either from an explict NodeACL created
1488 * via ConfigFS, or via running in TPG demo mode.
1489 */
1490 se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1491 sizeof(struct qla_tgt_cmd),
1492 TARGET_PROT_ALL, port_name,
1493 qlat_sess, tcm_qla2xxx_session_cb);
1494 if (IS_ERR(se_sess))
1495 return PTR_ERR(se_sess);
1496
1497 return 0;
1498 }
1499
1500 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1501 uint16_t loop_id, bool conf_compl_supported)
1502 {
1503 struct qla_tgt *tgt = sess->tgt;
1504 struct qla_hw_data *ha = tgt->ha;
1505 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1506 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1507 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1508 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1509 struct tcm_qla2xxx_nacl, se_node_acl);
1510 u32 key;
1511
1512
1513 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1514 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1515 sess, sess->port_name,
1516 sess->loop_id, loop_id, sess->d_id.b.domain,
1517 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1518 s_id.b.area, s_id.b.al_pa);
1519
1520 if (sess->loop_id != loop_id) {
1521 /*
1522 * Because we can shuffle loop IDs around and we
1523 * update different sessions non-atomically, we might
1524 * have overwritten this session's old loop ID
1525 * already, and we might end up overwriting some other
1526 * session that will be updated later. So we have to
1527 * be extra careful and we can't warn about those things...
1528 */
1529 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1530 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1531
1532 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1533
1534 sess->loop_id = loop_id;
1535 }
1536
1537 if (sess->d_id.b24 != s_id.b24) {
1538 key = (((u32) sess->d_id.b.domain << 16) |
1539 ((u32) sess->d_id.b.area << 8) |
1540 ((u32) sess->d_id.b.al_pa));
1541
1542 if (btree_lookup32(&lport->lport_fcport_map, key))
1543 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1544 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1545 sess->d_id.b.domain, sess->d_id.b.area,
1546 sess->d_id.b.al_pa);
1547 else
1548 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1549 sess->d_id.b.domain, sess->d_id.b.area,
1550 sess->d_id.b.al_pa);
1551
1552 key = (((u32) s_id.b.domain << 16) |
1553 ((u32) s_id.b.area << 8) |
1554 ((u32) s_id.b.al_pa));
1555
1556 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1557 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1558 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1559 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1560 } else {
1561 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1562 GFP_ATOMIC);
1563 }
1564
1565 sess->d_id = s_id;
1566 nacl->nport_id = key;
1567 }
1568
1569 sess->conf_compl_supported = conf_compl_supported;
1570
1571 }
1572
1573 /*
1574 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1575 */
1576 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1577 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
1578 .handle_cmd = tcm_qla2xxx_handle_cmd,
1579 .handle_data = tcm_qla2xxx_handle_data,
1580 .handle_tmr = tcm_qla2xxx_handle_tmr,
1581 .get_cmd = tcm_qla2xxx_get_cmd,
1582 .rel_cmd = tcm_qla2xxx_rel_cmd,
1583 .free_cmd = tcm_qla2xxx_free_cmd,
1584 .free_mcmd = tcm_qla2xxx_free_mcmd,
1585 .free_session = tcm_qla2xxx_free_session,
1586 .update_sess = tcm_qla2xxx_update_sess,
1587 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1588 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1589 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1590 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1591 .put_sess = tcm_qla2xxx_put_sess,
1592 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1593 .get_dif_tags = tcm_qla2xxx_dif_tags,
1594 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1595 };
1596
1597 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1598 {
1599 int rc;
1600
1601 rc = btree_init32(&lport->lport_fcport_map);
1602 if (rc) {
1603 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1604 return rc;
1605 }
1606
1607 lport->lport_loopid_map =
1608 vzalloc(array_size(65536,
1609 sizeof(struct tcm_qla2xxx_fc_loopid)));
1610 if (!lport->lport_loopid_map) {
1611 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1612 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1613 btree_destroy32(&lport->lport_fcport_map);
1614 return -ENOMEM;
1615 }
1616 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1617 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1618 return 0;
1619 }
1620
1621 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1622 void *target_lport_ptr,
1623 u64 npiv_wwpn, u64 npiv_wwnn)
1624 {
1625 struct qla_hw_data *ha = vha->hw;
1626 struct tcm_qla2xxx_lport *lport =
1627 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1628 /*
1629 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1630 */
1631 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1632 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1633 lport->qla_vha = vha;
1634
1635 return 0;
1636 }
1637
1638 static struct se_wwn *tcm_qla2xxx_make_lport(
1639 struct target_fabric_configfs *tf,
1640 struct config_group *group,
1641 const char *name)
1642 {
1643 struct tcm_qla2xxx_lport *lport;
1644 u64 wwpn;
1645 int ret = -ENODEV;
1646
1647 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1648 return ERR_PTR(-EINVAL);
1649
1650 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1651 if (!lport) {
1652 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1653 return ERR_PTR(-ENOMEM);
1654 }
1655 lport->lport_wwpn = wwpn;
1656 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1657 wwpn);
1658 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1659
1660 ret = tcm_qla2xxx_init_lport(lport);
1661 if (ret != 0)
1662 goto out;
1663
1664 ret = qlt_lport_register(lport, wwpn, 0, 0,
1665 tcm_qla2xxx_lport_register_cb);
1666 if (ret != 0)
1667 goto out_lport;
1668
1669 return &lport->lport_wwn;
1670 out_lport:
1671 vfree(lport->lport_loopid_map);
1672 btree_destroy32(&lport->lport_fcport_map);
1673 out:
1674 kfree(lport);
1675 return ERR_PTR(ret);
1676 }
1677
1678 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1679 {
1680 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1681 struct tcm_qla2xxx_lport, lport_wwn);
1682 struct scsi_qla_host *vha = lport->qla_vha;
1683 struct se_node_acl *node;
1684 u32 key = 0;
1685
1686 /*
1687 * Call into qla2x_target.c LLD logic to complete the
1688 * shutdown of struct qla_tgt after the call to
1689 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1690 */
1691 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1692 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1693
1694 qlt_lport_deregister(vha);
1695
1696 vfree(lport->lport_loopid_map);
1697 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1698 btree_remove32(&lport->lport_fcport_map, key);
1699 btree_destroy32(&lport->lport_fcport_map);
1700 kfree(lport);
1701 }
1702
1703 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1704 void *target_lport_ptr,
1705 u64 npiv_wwpn, u64 npiv_wwnn)
1706 {
1707 struct fc_vport *vport;
1708 struct Scsi_Host *sh = base_vha->host;
1709 struct scsi_qla_host *npiv_vha;
1710 struct tcm_qla2xxx_lport *lport =
1711 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1712 struct tcm_qla2xxx_lport *base_lport =
1713 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1714 struct fc_vport_identifiers vport_id;
1715
1716 if (qla_ini_mode_enabled(base_vha)) {
1717 pr_err("qla2xxx base_vha not enabled for target mode\n");
1718 return -EPERM;
1719 }
1720
1721 if (!base_lport || !base_lport->tpg_1 ||
1722 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1723 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1724 return -EPERM;
1725 }
1726
1727 memset(&vport_id, 0, sizeof(vport_id));
1728 vport_id.port_name = npiv_wwpn;
1729 vport_id.node_name = npiv_wwnn;
1730 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1731 vport_id.vport_type = FC_PORTTYPE_NPIV;
1732 vport_id.disable = false;
1733
1734 vport = fc_vport_create(sh, 0, &vport_id);
1735 if (!vport) {
1736 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1737 return -ENODEV;
1738 }
1739 /*
1740 * Setup local pointer to NPIV vhba + target_lport_ptr
1741 */
1742 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1743 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1744 lport->qla_vha = npiv_vha;
1745 scsi_host_get(npiv_vha->host);
1746 return 0;
1747 }
1748
1749
1750 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1751 struct target_fabric_configfs *tf,
1752 struct config_group *group,
1753 const char *name)
1754 {
1755 struct tcm_qla2xxx_lport *lport;
1756 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1757 char *p, tmp[128];
1758 int ret;
1759
1760 snprintf(tmp, 128, "%s", name);
1761
1762 p = strchr(tmp, '@');
1763 if (!p) {
1764 pr_err("Unable to locate NPIV '@' separator\n");
1765 return ERR_PTR(-EINVAL);
1766 }
1767 *p++ = '\0';
1768
1769 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1770 return ERR_PTR(-EINVAL);
1771
1772 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1773 &npiv_wwpn, &npiv_wwnn) < 0)
1774 return ERR_PTR(-EINVAL);
1775
1776 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1777 if (!lport) {
1778 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1779 return ERR_PTR(-ENOMEM);
1780 }
1781 lport->lport_npiv_wwpn = npiv_wwpn;
1782 lport->lport_npiv_wwnn = npiv_wwnn;
1783 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1784
1785 ret = tcm_qla2xxx_init_lport(lport);
1786 if (ret != 0)
1787 goto out;
1788
1789 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1790 tcm_qla2xxx_lport_register_npiv_cb);
1791 if (ret != 0)
1792 goto out_lport;
1793
1794 return &lport->lport_wwn;
1795 out_lport:
1796 vfree(lport->lport_loopid_map);
1797 btree_destroy32(&lport->lport_fcport_map);
1798 out:
1799 kfree(lport);
1800 return ERR_PTR(ret);
1801 }
1802
1803 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1804 {
1805 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1806 struct tcm_qla2xxx_lport, lport_wwn);
1807 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1808 struct qla_hw_data *ha = npiv_vha->hw;
1809 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1810
1811 scsi_host_put(npiv_vha->host);
1812 /*
1813 * Notify libfc that we want to release the vha->fc_vport
1814 */
1815 fc_vport_terminate(npiv_vha->fc_vport);
1816 scsi_host_put(base_vha->host);
1817 kfree(lport);
1818 }
1819
1820
1821 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1822 char *page)
1823 {
1824 return sprintf(page,
1825 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1826 QLA2XXX_VERSION, utsname()->sysname,
1827 utsname()->machine, utsname()->release);
1828 }
1829
1830 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1831
1832 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1833 &tcm_qla2xxx_wwn_attr_version,
1834 NULL,
1835 };
1836
1837 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1838 .module = THIS_MODULE,
1839 .fabric_name = "qla2xxx",
1840 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1841 /*
1842 * XXX: Limit assumes single page per scatter-gather-list entry.
1843 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1844 */
1845 .max_data_sg_nents = 1200,
1846 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1847 .tpg_get_tag = tcm_qla2xxx_get_tag,
1848 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1849 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1850 .tpg_check_demo_mode_write_protect =
1851 tcm_qla2xxx_check_demo_write_protect,
1852 .tpg_check_prod_mode_write_protect =
1853 tcm_qla2xxx_check_prod_write_protect,
1854 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1855 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1856 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1857 .check_stop_free = tcm_qla2xxx_check_stop_free,
1858 .release_cmd = tcm_qla2xxx_release_cmd,
1859 .close_session = tcm_qla2xxx_close_session,
1860 .sess_get_index = tcm_qla2xxx_sess_get_index,
1861 .sess_get_initiator_sid = NULL,
1862 .write_pending = tcm_qla2xxx_write_pending,
1863 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1864 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1865 .queue_data_in = tcm_qla2xxx_queue_data_in,
1866 .queue_status = tcm_qla2xxx_queue_status,
1867 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1868 .aborted_task = tcm_qla2xxx_aborted_task,
1869 /*
1870 * Setup function pointers for generic logic in
1871 * target_core_fabric_configfs.c
1872 */
1873 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1874 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1875 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1876 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1877 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1878
1879 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1880 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1881 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1882 };
1883
1884 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1885 .module = THIS_MODULE,
1886 .fabric_name = "qla2xxx_npiv",
1887 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1888 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1889 .tpg_get_tag = tcm_qla2xxx_get_tag,
1890 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1891 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1892 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1893 .tpg_check_prod_mode_write_protect =
1894 tcm_qla2xxx_check_prod_write_protect,
1895 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1896 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1897 .check_stop_free = tcm_qla2xxx_check_stop_free,
1898 .release_cmd = tcm_qla2xxx_release_cmd,
1899 .close_session = tcm_qla2xxx_close_session,
1900 .sess_get_index = tcm_qla2xxx_sess_get_index,
1901 .sess_get_initiator_sid = NULL,
1902 .write_pending = tcm_qla2xxx_write_pending,
1903 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1904 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1905 .queue_data_in = tcm_qla2xxx_queue_data_in,
1906 .queue_status = tcm_qla2xxx_queue_status,
1907 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1908 .aborted_task = tcm_qla2xxx_aborted_task,
1909 /*
1910 * Setup function pointers for generic logic in
1911 * target_core_fabric_configfs.c
1912 */
1913 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1914 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1915 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1916 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1917 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1918
1919 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1920 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1921 };
1922
1923 static int tcm_qla2xxx_register_configfs(void)
1924 {
1925 int ret;
1926
1927 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1928 QLA2XXX_VERSION, utsname()->sysname,
1929 utsname()->machine, utsname()->release);
1930
1931 ret = target_register_template(&tcm_qla2xxx_ops);
1932 if (ret)
1933 return ret;
1934
1935 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1936 if (ret)
1937 goto out_fabric;
1938
1939 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1940 WQ_MEM_RECLAIM, 0);
1941 if (!tcm_qla2xxx_free_wq) {
1942 ret = -ENOMEM;
1943 goto out_fabric_npiv;
1944 }
1945
1946 return 0;
1947
1948 out_fabric_npiv:
1949 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1950 out_fabric:
1951 target_unregister_template(&tcm_qla2xxx_ops);
1952 return ret;
1953 }
1954
1955 static void tcm_qla2xxx_deregister_configfs(void)
1956 {
1957 destroy_workqueue(tcm_qla2xxx_free_wq);
1958
1959 target_unregister_template(&tcm_qla2xxx_ops);
1960 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1961 }
1962
1963 static int __init tcm_qla2xxx_init(void)
1964 {
1965 int ret;
1966
1967 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64);
1968 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64);
1969 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32);
1970 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64);
1971 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12);
1972 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4);
1973 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64);
1974 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
1975 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64);
1976 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64);
1977 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
1978 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24);
1979 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24);
1980 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64);
1981
1982 ret = tcm_qla2xxx_register_configfs();
1983 if (ret < 0)
1984 return ret;
1985
1986 return 0;
1987 }
1988
1989 static void __exit tcm_qla2xxx_exit(void)
1990 {
1991 tcm_qla2xxx_deregister_configfs();
1992 }
1993
1994 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1995 MODULE_LICENSE("GPL");
1996 module_init(tcm_qla2xxx_init);
1997 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support