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Merge branch 'r6040-next'
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blob6643f6fc7795bcc09fc0c3ffd79a85b907ce6d94
1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
4 *
5 * (c) Copyright 2010-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
8 *
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
11 *
12 * Copyright (c) 2010 Cisco Systems, Inc
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
24
25
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <generated/utsrelease.h>
29 #include <linux/utsname.h>
30 #include <linux/vmalloc.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/kthread.h>
35 #include <linux/types.h>
36 #include <linux/string.h>
37 #include <linux/configfs.h>
38 #include <linux/ctype.h>
39 #include <asm/unaligned.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <target/target_core_base.h>
45 #include <target/target_core_fabric.h>
46
47 #include "qla_def.h"
48 #include "qla_target.h"
49 #include "tcm_qla2xxx.h"
50
51 static struct workqueue_struct *tcm_qla2xxx_free_wq;
52 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
53
54 /*
55 * Parse WWN.
56 * If strict, we require lower-case hex and colon separators to be sure
57 * the name is the same as what would be generated by ft_format_wwn()
58 * so the name and wwn are mapped one-to-one.
59 */
60 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
61 {
62 const char *cp;
63 char c;
64 u32 nibble;
65 u32 byte = 0;
66 u32 pos = 0;
67 u32 err;
68
69 *wwn = 0;
70 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
71 c = *cp;
72 if (c == '\n' && cp[1] == '\0')
73 continue;
74 if (strict && pos++ == 2 && byte++ < 7) {
75 pos = 0;
76 if (c == ':')
77 continue;
78 err = 1;
79 goto fail;
80 }
81 if (c == '\0') {
82 err = 2;
83 if (strict && byte != 8)
84 goto fail;
85 return cp - name;
86 }
87 err = 3;
88 if (isdigit(c))
89 nibble = c - '0';
90 else if (isxdigit(c) && (islower(c) || !strict))
91 nibble = tolower(c) - 'a' + 10;
92 else
93 goto fail;
94 *wwn = (*wwn << 4) | nibble;
95 }
96 err = 4;
97 fail:
98 pr_debug("err %u len %zu pos %u byte %u\n",
99 err, cp - name, pos, byte);
100 return -1;
101 }
102
103 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
104 {
105 u8 b[8];
106
107 put_unaligned_be64(wwn, b);
108 return snprintf(buf, len,
109 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
110 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
111 }
112
113 static char *tcm_qla2xxx_get_fabric_name(void)
114 {
115 return "qla2xxx";
116 }
117
118 /*
119 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
120 */
121 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
122 {
123 unsigned int i, j;
124 u8 wwn[8];
125
126 memset(wwn, 0, sizeof(wwn));
127
128 /* Validate and store the new name */
129 for (i = 0, j = 0; i < 16; i++) {
130 int value;
131
132 value = hex_to_bin(*ns++);
133 if (value >= 0)
134 j = (j << 4) | value;
135 else
136 return -EINVAL;
137
138 if (i % 2) {
139 wwn[i/2] = j & 0xff;
140 j = 0;
141 }
142 }
143
144 *nm = wwn_to_u64(wwn);
145 return 0;
146 }
147
148 /*
149 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
150 * store_fc_host_vport_create()
151 */
152 static int tcm_qla2xxx_npiv_parse_wwn(
153 const char *name,
154 size_t count,
155 u64 *wwpn,
156 u64 *wwnn)
157 {
158 unsigned int cnt = count;
159 int rc;
160
161 *wwpn = 0;
162 *wwnn = 0;
163
164 /* count may include a LF at end of string */
165 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
166 cnt--;
167
168 /* validate we have enough characters for WWPN */
169 if ((cnt != (16+1+16)) || (name[16] != ':'))
170 return -EINVAL;
171
172 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
173 if (rc != 0)
174 return rc;
175
176 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
177 if (rc != 0)
178 return rc;
179
180 return 0;
181 }
182
183 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
184 {
185 return "qla2xxx_npiv";
186 }
187
188 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
189 {
190 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
191 struct tcm_qla2xxx_tpg, se_tpg);
192 struct tcm_qla2xxx_lport *lport = tpg->lport;
193
194 return lport->lport_naa_name;
195 }
196
197 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
198 {
199 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
200 struct tcm_qla2xxx_tpg, se_tpg);
201 return tpg->lport_tpgt;
202 }
203
204 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
205 {
206 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
207 struct tcm_qla2xxx_tpg, se_tpg);
208
209 return tpg->tpg_attrib.generate_node_acls;
210 }
211
212 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
213 {
214 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
215 struct tcm_qla2xxx_tpg, se_tpg);
216
217 return tpg->tpg_attrib.cache_dynamic_acls;
218 }
219
220 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
221 {
222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
223 struct tcm_qla2xxx_tpg, se_tpg);
224
225 return tpg->tpg_attrib.demo_mode_write_protect;
226 }
227
228 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
229 {
230 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
231 struct tcm_qla2xxx_tpg, se_tpg);
232
233 return tpg->tpg_attrib.prod_mode_write_protect;
234 }
235
236 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
237 {
238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
239 struct tcm_qla2xxx_tpg, se_tpg);
240
241 return tpg->tpg_attrib.demo_mode_login_only;
242 }
243
244 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
245 {
246 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
247 struct tcm_qla2xxx_tpg, se_tpg);
248
249 return tpg->tpg_attrib.fabric_prot_type;
250 }
251
252 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
253 {
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
256
257 return tpg->lport_tpgt;
258 }
259
260 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
261 {
262 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
263 struct qla_tgt_mgmt_cmd, free_work);
264
265 transport_generic_free_cmd(&mcmd->se_cmd, 0);
266 }
267
268 /*
269 * Called from qla_target_template->free_mcmd(), and will call
270 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
271 * release callback. qla_hw_data->hardware_lock is expected to be held
272 */
273 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
274 {
275 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
276 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
277 }
278
279 static void tcm_qla2xxx_complete_free(struct work_struct *work)
280 {
281 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
282
283 cmd->cmd_in_wq = 0;
284
285 WARN_ON(cmd->cmd_flags & BIT_16);
286
287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
288 cmd->cmd_flags |= BIT_16;
289 transport_generic_free_cmd(&cmd->se_cmd, 0);
290 }
291
292 /*
293 * Called from qla_target_template->free_cmd(), and will call
294 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
295 * release callback. qla_hw_data->hardware_lock is expected to be held
296 */
297 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
298 {
299 cmd->vha->tgt_counters.core_qla_free_cmd++;
300 cmd->cmd_in_wq = 1;
301
302 BUG_ON(cmd->cmd_flags & BIT_20);
303 cmd->cmd_flags |= BIT_20;
304
305 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
306 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
307 }
308
309 /*
310 * Called from struct target_core_fabric_ops->check_stop_free() context
311 */
312 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
313 {
314 struct qla_tgt_cmd *cmd;
315
316 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
317 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
318 cmd->cmd_flags |= BIT_14;
319 }
320
321 return target_put_sess_cmd(se_cmd);
322 }
323
324 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
325 * fabric descriptor @se_cmd command to release
326 */
327 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
328 {
329 struct qla_tgt_cmd *cmd;
330
331 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
332 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
333 struct qla_tgt_mgmt_cmd, se_cmd);
334 qlt_free_mcmd(mcmd);
335 return;
336 }
337
338 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
339 qlt_free_cmd(cmd);
340 }
341
342 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
343 {
344 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
345 struct scsi_qla_host *vha;
346 unsigned long flags;
347
348 BUG_ON(!sess);
349 vha = sess->vha;
350
351 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
352 target_sess_cmd_list_set_waiting(se_sess);
353 qlt_put_sess(sess);
354 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
355 }
356
357 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
358 {
359 return 0;
360 }
361
362 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
363 {
364 struct qla_tgt_cmd *cmd = container_of(se_cmd,
365 struct qla_tgt_cmd, se_cmd);
366
367 if (cmd->aborted) {
368 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
369 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
370 * already kick start the free.
371 */
372 pr_debug("write_pending aborted cmd[%p] refcount %d "
373 "transport_state %x, t_state %x, se_cmd_flags %x\n",
374 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
375 cmd->se_cmd.transport_state,
376 cmd->se_cmd.t_state,
377 cmd->se_cmd.se_cmd_flags);
378 return 0;
379 }
380 cmd->cmd_flags |= BIT_3;
381 cmd->bufflen = se_cmd->data_length;
382 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
383
384 cmd->sg_cnt = se_cmd->t_data_nents;
385 cmd->sg = se_cmd->t_data_sg;
386
387 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
388 cmd->prot_sg = se_cmd->t_prot_sg;
389 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
390 se_cmd->pi_err = 0;
391
392 /*
393 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
394 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
395 */
396 return qlt_rdy_to_xfer(cmd);
397 }
398
399 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
400 {
401 unsigned long flags;
402 /*
403 * Check for WRITE_PENDING status to determine if we need to wait for
404 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
405 */
406 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
407 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
408 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
409 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
410 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
411 50);
412 return 0;
413 }
414 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
415
416 return 0;
417 }
418
419 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
420 {
421 return;
422 }
423
424 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
425 {
426 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
427 struct qla_tgt_cmd *cmd = container_of(se_cmd,
428 struct qla_tgt_cmd, se_cmd);
429 return cmd->state;
430 }
431
432 return 0;
433 }
434
435 /*
436 * Called from process context in qla_target.c:qlt_do_work() code
437 */
438 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
439 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
440 int data_dir, int bidi)
441 {
442 struct se_cmd *se_cmd = &cmd->se_cmd;
443 struct se_session *se_sess;
444 struct qla_tgt_sess *sess;
445 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
446 struct se_portal_group *se_tpg;
447 struct tcm_qla2xxx_tpg *tpg;
448 #endif
449 int flags = TARGET_SCF_ACK_KREF;
450
451 if (bidi)
452 flags |= TARGET_SCF_BIDI_OP;
453
454 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
455 flags |= TARGET_SCF_USE_CPUID;
456
457 sess = cmd->sess;
458 if (!sess) {
459 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
460 return -EINVAL;
461 }
462
463 se_sess = sess->se_sess;
464 if (!se_sess) {
465 pr_err("Unable to locate active struct se_session\n");
466 return -EINVAL;
467 }
468
469 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
470 se_tpg = se_sess->se_tpg;
471 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
472 if (unlikely(tpg->tpg_attrib.jam_host)) {
473 /* return, and dont run target_submit_cmd,discarding command */
474 return 0;
475 }
476 #endif
477
478 cmd->vha->tgt_counters.qla_core_sbt_cmd++;
479 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
480 cmd->unpacked_lun, data_length, fcp_task_attr,
481 data_dir, flags);
482 }
483
484 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
485 {
486 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
487 unsigned long flags;
488
489 /*
490 * Ensure that the complete FCP WRITE payload has been received.
491 * Otherwise return an exception via CHECK_CONDITION status.
492 */
493 cmd->cmd_in_wq = 0;
494
495 spin_lock_irqsave(&cmd->cmd_lock, flags);
496 cmd->cmd_flags |= CMD_FLAG_DATA_WORK;
497 if (cmd->aborted) {
498 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
499 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
500
501 tcm_qla2xxx_free_cmd(cmd);
502 return;
503 }
504 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
505
506 cmd->vha->tgt_counters.qla_core_ret_ctio++;
507 if (!cmd->write_data_transferred) {
508 /*
509 * Check if se_cmd has already been aborted via LUN_RESET, and
510 * waiting upon completion in tcm_qla2xxx_write_pending_status()
511 */
512 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
513 complete(&cmd->se_cmd.t_transport_stop_comp);
514 return;
515 }
516
517 if (cmd->se_cmd.pi_err)
518 transport_generic_request_failure(&cmd->se_cmd,
519 cmd->se_cmd.pi_err);
520 else
521 transport_generic_request_failure(&cmd->se_cmd,
522 TCM_CHECK_CONDITION_ABORT_CMD);
523
524 return;
525 }
526
527 return target_execute_cmd(&cmd->se_cmd);
528 }
529
530 /*
531 * Called from qla_target.c:qlt_do_ctio_completion()
532 */
533 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
534 {
535 cmd->cmd_flags |= BIT_10;
536 cmd->cmd_in_wq = 1;
537 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
538 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
539 }
540
541 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
542 {
543 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
544
545 /* take an extra kref to prevent cmd free too early.
546 * need to wait for SCSI status/check condition to
547 * finish responding generate by transport_generic_request_failure.
548 */
549 kref_get(&cmd->se_cmd.cmd_kref);
550 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
551 }
552
553 /*
554 * Called from qla_target.c:qlt_do_ctio_completion()
555 */
556 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
557 {
558 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
559 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
560 }
561
562 /*
563 * Called from qla_target.c:qlt_issue_task_mgmt()
564 */
565 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
566 uint8_t tmr_func, uint32_t tag)
567 {
568 struct qla_tgt_sess *sess = mcmd->sess;
569 struct se_cmd *se_cmd = &mcmd->se_cmd;
570
571 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
572 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
573 }
574
575 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
576 {
577 struct qla_tgt_cmd *cmd = container_of(se_cmd,
578 struct qla_tgt_cmd, se_cmd);
579
580 if (cmd->aborted) {
581 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
582 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
583 * already kick start the free.
584 */
585 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
586 "transport_state %x, t_state %x, se_cmd_flags %x\n",
587 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
588 cmd->se_cmd.transport_state,
589 cmd->se_cmd.t_state,
590 cmd->se_cmd.se_cmd_flags);
591 return 0;
592 }
593
594 cmd->cmd_flags |= BIT_4;
595 cmd->bufflen = se_cmd->data_length;
596 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
597
598 cmd->sg_cnt = se_cmd->t_data_nents;
599 cmd->sg = se_cmd->t_data_sg;
600 cmd->offset = 0;
601
602 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
603 cmd->prot_sg = se_cmd->t_prot_sg;
604 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
605 se_cmd->pi_err = 0;
606
607 /*
608 * Now queue completed DATA_IN the qla2xxx LLD and response ring
609 */
610 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
611 se_cmd->scsi_status);
612 }
613
614 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
615 {
616 struct qla_tgt_cmd *cmd = container_of(se_cmd,
617 struct qla_tgt_cmd, se_cmd);
618 int xmit_type = QLA_TGT_XMIT_STATUS;
619
620 cmd->bufflen = se_cmd->data_length;
621 cmd->sg = NULL;
622 cmd->sg_cnt = 0;
623 cmd->offset = 0;
624 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
625 if (cmd->cmd_flags & BIT_5) {
626 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
627 dump_stack();
628 }
629 cmd->cmd_flags |= BIT_5;
630
631 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
632 /*
633 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
634 * for qla_tgt_xmit_response LLD code
635 */
636 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
637 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
638 se_cmd->residual_count = 0;
639 }
640 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
641 se_cmd->residual_count += se_cmd->data_length;
642
643 cmd->bufflen = 0;
644 }
645 /*
646 * Now queue status response to qla2xxx LLD code and response ring
647 */
648 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
649 }
650
651 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
652 {
653 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
654 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
655 struct qla_tgt_mgmt_cmd, se_cmd);
656
657 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
658 mcmd, se_tmr->function, se_tmr->response);
659 /*
660 * Do translation between TCM TM response codes and
661 * QLA2xxx FC TM response codes.
662 */
663 switch (se_tmr->response) {
664 case TMR_FUNCTION_COMPLETE:
665 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
666 break;
667 case TMR_TASK_DOES_NOT_EXIST:
668 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
669 break;
670 case TMR_FUNCTION_REJECTED:
671 mcmd->fc_tm_rsp = FC_TM_REJECT;
672 break;
673 case TMR_LUN_DOES_NOT_EXIST:
674 default:
675 mcmd->fc_tm_rsp = FC_TM_FAILED;
676 break;
677 }
678 /*
679 * Queue the TM response to QLA2xxx LLD to build a
680 * CTIO response packet.
681 */
682 qlt_xmit_tm_rsp(mcmd);
683 }
684
685
686 #define DATA_WORK_NOT_FREE(_flags) \
687 (( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \
688 CMD_FLAG_DATA_WORK)
689 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
690 {
691 struct qla_tgt_cmd *cmd = container_of(se_cmd,
692 struct qla_tgt_cmd, se_cmd);
693 unsigned long flags;
694
695 if (qlt_abort_cmd(cmd))
696 return;
697
698 spin_lock_irqsave(&cmd->cmd_lock, flags);
699 if ((cmd->state == QLA_TGT_STATE_NEW)||
700 ((cmd->state == QLA_TGT_STATE_DATA_IN) &&
701 DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) {
702
703 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
704 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
705 /* Cmd have not reached firmware.
706 * Use this trigger to free it. */
707 tcm_qla2xxx_free_cmd(cmd);
708 return;
709 }
710 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
711 return;
712
713 }
714
715 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
716 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
717 /*
718 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
719 */
720 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
721 {
722 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
723 struct se_portal_group *se_tpg = se_nacl->se_tpg;
724 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
725 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
726 struct tcm_qla2xxx_lport, lport_wwn);
727 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
728 struct tcm_qla2xxx_nacl, se_node_acl);
729 void *node;
730
731 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
732
733 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
734 if (WARN_ON(node && (node != se_nacl))) {
735 /*
736 * The nacl no longer matches what we think it should be.
737 * Most likely a new dynamic acl has been added while
738 * someone dropped the hardware lock. It clearly is a
739 * bug elsewhere, but this bit can't make things worse.
740 */
741 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
742 node, GFP_ATOMIC);
743 }
744
745 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
746 se_nacl, nacl->nport_wwnn, nacl->nport_id);
747 /*
748 * Now clear the se_nacl and session pointers from our HW lport lookup
749 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
750 *
751 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
752 * target_wait_for_sess_cmds() before the session waits for outstanding
753 * I/O to complete, to avoid a race between session shutdown execution
754 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
755 */
756 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
757 }
758
759 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
760 {
761 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
762 target_sess_cmd_list_set_waiting(sess->se_sess);
763 }
764
765 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
766 const char *name)
767 {
768 struct tcm_qla2xxx_nacl *nacl =
769 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
770 u64 wwnn;
771
772 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
773 return -EINVAL;
774
775 nacl->nport_wwnn = wwnn;
776 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
777
778 return 0;
779 }
780
781 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
782
783 #define DEF_QLA_TPG_ATTRIB(name) \
784 \
785 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
786 struct config_item *item, char *page) \
787 { \
788 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
789 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
790 struct tcm_qla2xxx_tpg, se_tpg); \
791 \
792 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
793 } \
794 \
795 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
796 struct config_item *item, const char *page, size_t count) \
797 { \
798 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
799 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
800 struct tcm_qla2xxx_tpg, se_tpg); \
801 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
802 unsigned long val; \
803 int ret; \
804 \
805 ret = kstrtoul(page, 0, &val); \
806 if (ret < 0) { \
807 pr_err("kstrtoul() failed with" \
808 " ret: %d\n", ret); \
809 return -EINVAL; \
810 } \
811 \
812 if ((val != 0) && (val != 1)) { \
813 pr_err("Illegal boolean value %lu\n", val); \
814 return -EINVAL; \
815 } \
816 \
817 a->name = val; \
818 \
819 return count; \
820 } \
821 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
822
823 DEF_QLA_TPG_ATTRIB(generate_node_acls);
824 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
825 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
826 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
827 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
828 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
829 DEF_QLA_TPG_ATTRIB(jam_host);
830 #endif
831
832 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
833 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
834 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
835 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
836 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
837 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
838 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
839 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
840 #endif
841 NULL,
842 };
843
844 /* End items for tcm_qla2xxx_tpg_attrib_cit */
845
846 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
847 char *page)
848 {
849 struct se_portal_group *se_tpg = to_tpg(item);
850 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
851 struct tcm_qla2xxx_tpg, se_tpg);
852
853 return snprintf(page, PAGE_SIZE, "%d\n",
854 atomic_read(&tpg->lport_tpg_enabled));
855 }
856
857 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
858 {
859 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
860 struct tcm_qla2xxx_tpg, tpg_base_work);
861 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
862 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
863
864 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
865 atomic_set(&base_tpg->lport_tpg_enabled, 1);
866 qlt_enable_vha(base_vha);
867 }
868 complete(&base_tpg->tpg_base_comp);
869 }
870
871 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
872 {
873 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
874 struct tcm_qla2xxx_tpg, tpg_base_work);
875 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
876 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
877
878 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
879 atomic_set(&base_tpg->lport_tpg_enabled, 0);
880 target_undepend_item(&se_tpg->tpg_group.cg_item);
881 }
882 complete(&base_tpg->tpg_base_comp);
883 }
884
885 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
886 const char *page, size_t count)
887 {
888 struct se_portal_group *se_tpg = to_tpg(item);
889 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
890 struct tcm_qla2xxx_tpg, se_tpg);
891 unsigned long op;
892 int rc;
893
894 rc = kstrtoul(page, 0, &op);
895 if (rc < 0) {
896 pr_err("kstrtoul() returned %d\n", rc);
897 return -EINVAL;
898 }
899 if ((op != 1) && (op != 0)) {
900 pr_err("Illegal value for tpg_enable: %lu\n", op);
901 return -EINVAL;
902 }
903 if (op) {
904 if (atomic_read(&tpg->lport_tpg_enabled))
905 return -EEXIST;
906
907 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
908 } else {
909 if (!atomic_read(&tpg->lport_tpg_enabled))
910 return count;
911
912 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
913 }
914 init_completion(&tpg->tpg_base_comp);
915 schedule_work(&tpg->tpg_base_work);
916 wait_for_completion(&tpg->tpg_base_comp);
917
918 if (op) {
919 if (!atomic_read(&tpg->lport_tpg_enabled))
920 return -ENODEV;
921 } else {
922 if (atomic_read(&tpg->lport_tpg_enabled))
923 return -EPERM;
924 }
925 return count;
926 }
927
928 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
929 char *page)
930 {
931 return target_show_dynamic_sessions(to_tpg(item), page);
932 }
933
934 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
935 const char *page, size_t count)
936 {
937 struct se_portal_group *se_tpg = to_tpg(item);
938 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
939 struct tcm_qla2xxx_tpg, se_tpg);
940 unsigned long val;
941 int ret = kstrtoul(page, 0, &val);
942
943 if (ret) {
944 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
945 return ret;
946 }
947 if (val != 0 && val != 1 && val != 3) {
948 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
949 return -EINVAL;
950 }
951 tpg->tpg_attrib.fabric_prot_type = val;
952
953 return count;
954 }
955
956 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
957 char *page)
958 {
959 struct se_portal_group *se_tpg = to_tpg(item);
960 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
961 struct tcm_qla2xxx_tpg, se_tpg);
962
963 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
964 }
965
966 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
967 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
968 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
969
970 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
971 &tcm_qla2xxx_tpg_attr_enable,
972 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
973 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
974 NULL,
975 };
976
977 static struct se_portal_group *tcm_qla2xxx_make_tpg(
978 struct se_wwn *wwn,
979 struct config_group *group,
980 const char *name)
981 {
982 struct tcm_qla2xxx_lport *lport = container_of(wwn,
983 struct tcm_qla2xxx_lport, lport_wwn);
984 struct tcm_qla2xxx_tpg *tpg;
985 unsigned long tpgt;
986 int ret;
987
988 if (strstr(name, "tpgt_") != name)
989 return ERR_PTR(-EINVAL);
990 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
991 return ERR_PTR(-EINVAL);
992
993 if ((tpgt != 1)) {
994 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
995 return ERR_PTR(-ENOSYS);
996 }
997
998 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
999 if (!tpg) {
1000 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1001 return ERR_PTR(-ENOMEM);
1002 }
1003 tpg->lport = lport;
1004 tpg->lport_tpgt = tpgt;
1005 /*
1006 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1007 * NodeACLs
1008 */
1009 tpg->tpg_attrib.generate_node_acls = 1;
1010 tpg->tpg_attrib.demo_mode_write_protect = 1;
1011 tpg->tpg_attrib.cache_dynamic_acls = 1;
1012 tpg->tpg_attrib.demo_mode_login_only = 1;
1013 tpg->tpg_attrib.jam_host = 0;
1014
1015 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1016 if (ret < 0) {
1017 kfree(tpg);
1018 return NULL;
1019 }
1020
1021 lport->tpg_1 = tpg;
1022
1023 return &tpg->se_tpg;
1024 }
1025
1026 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1027 {
1028 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1029 struct tcm_qla2xxx_tpg, se_tpg);
1030 struct tcm_qla2xxx_lport *lport = tpg->lport;
1031 struct scsi_qla_host *vha = lport->qla_vha;
1032 /*
1033 * Call into qla2x_target.c LLD logic to shutdown the active
1034 * FC Nexuses and disable target mode operation for this qla_hw_data
1035 */
1036 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1037 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1038
1039 core_tpg_deregister(se_tpg);
1040 /*
1041 * Clear local TPG=1 pointer for non NPIV mode.
1042 */
1043 lport->tpg_1 = NULL;
1044 kfree(tpg);
1045 }
1046
1047 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1048 char *page)
1049 {
1050 return tcm_qla2xxx_tpg_enable_show(item, page);
1051 }
1052
1053 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1054 const char *page, size_t count)
1055 {
1056 struct se_portal_group *se_tpg = to_tpg(item);
1057 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1058 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1059 struct tcm_qla2xxx_lport, lport_wwn);
1060 struct scsi_qla_host *vha = lport->qla_vha;
1061 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1062 struct tcm_qla2xxx_tpg, se_tpg);
1063 unsigned long op;
1064 int rc;
1065
1066 rc = kstrtoul(page, 0, &op);
1067 if (rc < 0) {
1068 pr_err("kstrtoul() returned %d\n", rc);
1069 return -EINVAL;
1070 }
1071 if ((op != 1) && (op != 0)) {
1072 pr_err("Illegal value for tpg_enable: %lu\n", op);
1073 return -EINVAL;
1074 }
1075 if (op) {
1076 if (atomic_read(&tpg->lport_tpg_enabled))
1077 return -EEXIST;
1078
1079 atomic_set(&tpg->lport_tpg_enabled, 1);
1080 qlt_enable_vha(vha);
1081 } else {
1082 if (!atomic_read(&tpg->lport_tpg_enabled))
1083 return count;
1084
1085 atomic_set(&tpg->lport_tpg_enabled, 0);
1086 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1087 }
1088
1089 return count;
1090 }
1091
1092 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1093
1094 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1095 &tcm_qla2xxx_npiv_tpg_attr_enable,
1096 NULL,
1097 };
1098
1099 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1100 struct se_wwn *wwn,
1101 struct config_group *group,
1102 const char *name)
1103 {
1104 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1105 struct tcm_qla2xxx_lport, lport_wwn);
1106 struct tcm_qla2xxx_tpg *tpg;
1107 unsigned long tpgt;
1108 int ret;
1109
1110 if (strstr(name, "tpgt_") != name)
1111 return ERR_PTR(-EINVAL);
1112 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1113 return ERR_PTR(-EINVAL);
1114
1115 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1116 if (!tpg) {
1117 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1118 return ERR_PTR(-ENOMEM);
1119 }
1120 tpg->lport = lport;
1121 tpg->lport_tpgt = tpgt;
1122
1123 /*
1124 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1125 * NodeACLs
1126 */
1127 tpg->tpg_attrib.generate_node_acls = 1;
1128 tpg->tpg_attrib.demo_mode_write_protect = 1;
1129 tpg->tpg_attrib.cache_dynamic_acls = 1;
1130 tpg->tpg_attrib.demo_mode_login_only = 1;
1131
1132 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1133 if (ret < 0) {
1134 kfree(tpg);
1135 return NULL;
1136 }
1137 lport->tpg_1 = tpg;
1138 return &tpg->se_tpg;
1139 }
1140
1141 /*
1142 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1143 */
1144 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1145 scsi_qla_host_t *vha,
1146 const uint8_t *s_id)
1147 {
1148 struct tcm_qla2xxx_lport *lport;
1149 struct se_node_acl *se_nacl;
1150 struct tcm_qla2xxx_nacl *nacl;
1151 u32 key;
1152
1153 lport = vha->vha_tgt.target_lport_ptr;
1154 if (!lport) {
1155 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1156 dump_stack();
1157 return NULL;
1158 }
1159
1160 key = sid_to_key(s_id);
1161 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1162
1163 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1164 if (!se_nacl) {
1165 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1166 return NULL;
1167 }
1168 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1169 se_nacl, se_nacl->initiatorname);
1170
1171 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1172 if (!nacl->qla_tgt_sess) {
1173 pr_err("Unable to locate struct qla_tgt_sess\n");
1174 return NULL;
1175 }
1176
1177 return nacl->qla_tgt_sess;
1178 }
1179
1180 /*
1181 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1182 */
1183 static void tcm_qla2xxx_set_sess_by_s_id(
1184 struct tcm_qla2xxx_lport *lport,
1185 struct se_node_acl *new_se_nacl,
1186 struct tcm_qla2xxx_nacl *nacl,
1187 struct se_session *se_sess,
1188 struct qla_tgt_sess *qla_tgt_sess,
1189 uint8_t *s_id)
1190 {
1191 u32 key;
1192 void *slot;
1193 int rc;
1194
1195 key = sid_to_key(s_id);
1196 pr_debug("set_sess_by_s_id: %06x\n", key);
1197
1198 slot = btree_lookup32(&lport->lport_fcport_map, key);
1199 if (!slot) {
1200 if (new_se_nacl) {
1201 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1202 nacl->nport_id = key;
1203 rc = btree_insert32(&lport->lport_fcport_map, key,
1204 new_se_nacl, GFP_ATOMIC);
1205 if (rc)
1206 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1207 (int)key);
1208 } else {
1209 pr_debug("Wiping nonexisting fc_port entry\n");
1210 }
1211
1212 qla_tgt_sess->se_sess = se_sess;
1213 nacl->qla_tgt_sess = qla_tgt_sess;
1214 return;
1215 }
1216
1217 if (nacl->qla_tgt_sess) {
1218 if (new_se_nacl == NULL) {
1219 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1220 btree_remove32(&lport->lport_fcport_map, key);
1221 nacl->qla_tgt_sess = NULL;
1222 return;
1223 }
1224 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1225 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1226 qla_tgt_sess->se_sess = se_sess;
1227 nacl->qla_tgt_sess = qla_tgt_sess;
1228 return;
1229 }
1230
1231 if (new_se_nacl == NULL) {
1232 pr_debug("Clearing existing fc_port entry\n");
1233 btree_remove32(&lport->lport_fcport_map, key);
1234 return;
1235 }
1236
1237 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1238 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1239 qla_tgt_sess->se_sess = se_sess;
1240 nacl->qla_tgt_sess = qla_tgt_sess;
1241
1242 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1243 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1244 }
1245
1246 /*
1247 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1248 */
1249 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1250 scsi_qla_host_t *vha,
1251 const uint16_t loop_id)
1252 {
1253 struct tcm_qla2xxx_lport *lport;
1254 struct se_node_acl *se_nacl;
1255 struct tcm_qla2xxx_nacl *nacl;
1256 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1257
1258 lport = vha->vha_tgt.target_lport_ptr;
1259 if (!lport) {
1260 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1261 dump_stack();
1262 return NULL;
1263 }
1264
1265 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1266
1267 fc_loopid = lport->lport_loopid_map + loop_id;
1268 se_nacl = fc_loopid->se_nacl;
1269 if (!se_nacl) {
1270 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1271 loop_id);
1272 return NULL;
1273 }
1274
1275 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1276
1277 if (!nacl->qla_tgt_sess) {
1278 pr_err("Unable to locate struct qla_tgt_sess\n");
1279 return NULL;
1280 }
1281
1282 return nacl->qla_tgt_sess;
1283 }
1284
1285 /*
1286 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1287 */
1288 static void tcm_qla2xxx_set_sess_by_loop_id(
1289 struct tcm_qla2xxx_lport *lport,
1290 struct se_node_acl *new_se_nacl,
1291 struct tcm_qla2xxx_nacl *nacl,
1292 struct se_session *se_sess,
1293 struct qla_tgt_sess *qla_tgt_sess,
1294 uint16_t loop_id)
1295 {
1296 struct se_node_acl *saved_nacl;
1297 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1298
1299 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1300
1301 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1302 lport->lport_loopid_map)[loop_id];
1303
1304 saved_nacl = fc_loopid->se_nacl;
1305 if (!saved_nacl) {
1306 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1307 fc_loopid->se_nacl = new_se_nacl;
1308 if (qla_tgt_sess->se_sess != se_sess)
1309 qla_tgt_sess->se_sess = se_sess;
1310 if (nacl->qla_tgt_sess != qla_tgt_sess)
1311 nacl->qla_tgt_sess = qla_tgt_sess;
1312 return;
1313 }
1314
1315 if (nacl->qla_tgt_sess) {
1316 if (new_se_nacl == NULL) {
1317 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1318 fc_loopid->se_nacl = NULL;
1319 nacl->qla_tgt_sess = NULL;
1320 return;
1321 }
1322
1323 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1324 fc_loopid->se_nacl = new_se_nacl;
1325 if (qla_tgt_sess->se_sess != se_sess)
1326 qla_tgt_sess->se_sess = se_sess;
1327 if (nacl->qla_tgt_sess != qla_tgt_sess)
1328 nacl->qla_tgt_sess = qla_tgt_sess;
1329 return;
1330 }
1331
1332 if (new_se_nacl == NULL) {
1333 pr_debug("Clearing fc_loopid->se_nacl\n");
1334 fc_loopid->se_nacl = NULL;
1335 return;
1336 }
1337
1338 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1339 fc_loopid->se_nacl = new_se_nacl;
1340 if (qla_tgt_sess->se_sess != se_sess)
1341 qla_tgt_sess->se_sess = se_sess;
1342 if (nacl->qla_tgt_sess != qla_tgt_sess)
1343 nacl->qla_tgt_sess = qla_tgt_sess;
1344
1345 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1346 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1347 }
1348
1349 /*
1350 * Should always be called with qla_hw_data->tgt.sess_lock held.
1351 */
1352 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1353 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1354 {
1355 struct se_session *se_sess = sess->se_sess;
1356 unsigned char be_sid[3];
1357
1358 be_sid[0] = sess->s_id.b.domain;
1359 be_sid[1] = sess->s_id.b.area;
1360 be_sid[2] = sess->s_id.b.al_pa;
1361
1362 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1363 sess, be_sid);
1364 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1365 sess, sess->loop_id);
1366 }
1367
1368 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1369 {
1370 struct qla_tgt *tgt = sess->tgt;
1371 struct qla_hw_data *ha = tgt->ha;
1372 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1373 struct se_session *se_sess;
1374 struct tcm_qla2xxx_lport *lport;
1375
1376 BUG_ON(in_interrupt());
1377
1378 se_sess = sess->se_sess;
1379 if (!se_sess) {
1380 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1381 dump_stack();
1382 return;
1383 }
1384
1385 lport = vha->vha_tgt.target_lport_ptr;
1386 if (!lport) {
1387 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1388 dump_stack();
1389 return;
1390 }
1391 target_wait_for_sess_cmds(se_sess);
1392
1393 transport_deregister_session_configfs(sess->se_sess);
1394 transport_deregister_session(sess->se_sess);
1395 }
1396
1397 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1398 struct se_session *se_sess, void *p)
1399 {
1400 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1401 struct tcm_qla2xxx_tpg, se_tpg);
1402 struct tcm_qla2xxx_lport *lport = tpg->lport;
1403 struct qla_hw_data *ha = lport->qla_vha->hw;
1404 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1405 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1406 struct tcm_qla2xxx_nacl, se_node_acl);
1407 struct qla_tgt_sess *qlat_sess = p;
1408 uint16_t loop_id = qlat_sess->loop_id;
1409 unsigned long flags;
1410 unsigned char be_sid[3];
1411
1412 be_sid[0] = qlat_sess->s_id.b.domain;
1413 be_sid[1] = qlat_sess->s_id.b.area;
1414 be_sid[2] = qlat_sess->s_id.b.al_pa;
1415
1416 /*
1417 * And now setup se_nacl and session pointers into HW lport internal
1418 * mappings for fabric S_ID and LOOP_ID.
1419 */
1420 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1421 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1422 se_sess, qlat_sess, be_sid);
1423 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1424 se_sess, qlat_sess, loop_id);
1425 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1426
1427 return 0;
1428 }
1429
1430 /*
1431 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1432 * to locate struct se_node_acl
1433 */
1434 static int tcm_qla2xxx_check_initiator_node_acl(
1435 scsi_qla_host_t *vha,
1436 unsigned char *fc_wwpn,
1437 struct qla_tgt_sess *qlat_sess)
1438 {
1439 struct qla_hw_data *ha = vha->hw;
1440 struct tcm_qla2xxx_lport *lport;
1441 struct tcm_qla2xxx_tpg *tpg;
1442 struct se_session *se_sess;
1443 unsigned char port_name[36];
1444 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1445 TCM_QLA2XXX_DEFAULT_TAGS;
1446
1447 lport = vha->vha_tgt.target_lport_ptr;
1448 if (!lport) {
1449 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1450 dump_stack();
1451 return -EINVAL;
1452 }
1453 /*
1454 * Locate the TPG=1 reference..
1455 */
1456 tpg = lport->tpg_1;
1457 if (!tpg) {
1458 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1459 return -EINVAL;
1460 }
1461 /*
1462 * Format the FCP Initiator port_name into colon seperated values to
1463 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1464 */
1465 memset(&port_name, 0, 36);
1466 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1467 /*
1468 * Locate our struct se_node_acl either from an explict NodeACL created
1469 * via ConfigFS, or via running in TPG demo mode.
1470 */
1471 se_sess = target_alloc_session(&tpg->se_tpg, num_tags,
1472 sizeof(struct qla_tgt_cmd),
1473 TARGET_PROT_ALL, port_name,
1474 qlat_sess, tcm_qla2xxx_session_cb);
1475 if (IS_ERR(se_sess))
1476 return PTR_ERR(se_sess);
1477
1478 return 0;
1479 }
1480
1481 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1482 uint16_t loop_id, bool conf_compl_supported)
1483 {
1484 struct qla_tgt *tgt = sess->tgt;
1485 struct qla_hw_data *ha = tgt->ha;
1486 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1487 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1488 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1489 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1490 struct tcm_qla2xxx_nacl, se_node_acl);
1491 u32 key;
1492
1493
1494 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1495 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1496 sess, sess->port_name,
1497 sess->loop_id, loop_id, sess->s_id.b.domain,
1498 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1499 s_id.b.area, s_id.b.al_pa);
1500
1501 if (sess->loop_id != loop_id) {
1502 /*
1503 * Because we can shuffle loop IDs around and we
1504 * update different sessions non-atomically, we might
1505 * have overwritten this session's old loop ID
1506 * already, and we might end up overwriting some other
1507 * session that will be updated later. So we have to
1508 * be extra careful and we can't warn about those things...
1509 */
1510 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1511 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1512
1513 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1514
1515 sess->loop_id = loop_id;
1516 }
1517
1518 if (sess->s_id.b24 != s_id.b24) {
1519 key = (((u32) sess->s_id.b.domain << 16) |
1520 ((u32) sess->s_id.b.area << 8) |
1521 ((u32) sess->s_id.b.al_pa));
1522
1523 if (btree_lookup32(&lport->lport_fcport_map, key))
1524 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1525 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1526 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1527 else
1528 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1529 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1530
1531 key = (((u32) s_id.b.domain << 16) |
1532 ((u32) s_id.b.area << 8) |
1533 ((u32) s_id.b.al_pa));
1534
1535 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1536 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1537 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1538 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1539 } else {
1540 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1541 }
1542
1543 sess->s_id = s_id;
1544 nacl->nport_id = key;
1545 }
1546
1547 sess->conf_compl_supported = conf_compl_supported;
1548
1549 /* Reset logout parameters to default */
1550 sess->logout_on_delete = 1;
1551 sess->keep_nport_handle = 0;
1552 }
1553
1554 /*
1555 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1556 */
1557 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1558 .handle_cmd = tcm_qla2xxx_handle_cmd,
1559 .handle_data = tcm_qla2xxx_handle_data,
1560 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1561 .handle_tmr = tcm_qla2xxx_handle_tmr,
1562 .free_cmd = tcm_qla2xxx_free_cmd,
1563 .free_mcmd = tcm_qla2xxx_free_mcmd,
1564 .free_session = tcm_qla2xxx_free_session,
1565 .update_sess = tcm_qla2xxx_update_sess,
1566 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1567 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1568 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1569 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1570 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1571 };
1572
1573 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1574 {
1575 int rc;
1576
1577 rc = btree_init32(&lport->lport_fcport_map);
1578 if (rc) {
1579 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1580 return rc;
1581 }
1582
1583 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1584 65536);
1585 if (!lport->lport_loopid_map) {
1586 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1587 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1588 btree_destroy32(&lport->lport_fcport_map);
1589 return -ENOMEM;
1590 }
1591 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1592 * 65536);
1593 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1594 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1595 return 0;
1596 }
1597
1598 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1599 void *target_lport_ptr,
1600 u64 npiv_wwpn, u64 npiv_wwnn)
1601 {
1602 struct qla_hw_data *ha = vha->hw;
1603 struct tcm_qla2xxx_lport *lport =
1604 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1605 /*
1606 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1607 */
1608 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1609 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1610 lport->qla_vha = vha;
1611
1612 return 0;
1613 }
1614
1615 static struct se_wwn *tcm_qla2xxx_make_lport(
1616 struct target_fabric_configfs *tf,
1617 struct config_group *group,
1618 const char *name)
1619 {
1620 struct tcm_qla2xxx_lport *lport;
1621 u64 wwpn;
1622 int ret = -ENODEV;
1623
1624 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1625 return ERR_PTR(-EINVAL);
1626
1627 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1628 if (!lport) {
1629 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1630 return ERR_PTR(-ENOMEM);
1631 }
1632 lport->lport_wwpn = wwpn;
1633 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1634 wwpn);
1635 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1636
1637 ret = tcm_qla2xxx_init_lport(lport);
1638 if (ret != 0)
1639 goto out;
1640
1641 ret = qlt_lport_register(lport, wwpn, 0, 0,
1642 tcm_qla2xxx_lport_register_cb);
1643 if (ret != 0)
1644 goto out_lport;
1645
1646 return &lport->lport_wwn;
1647 out_lport:
1648 vfree(lport->lport_loopid_map);
1649 btree_destroy32(&lport->lport_fcport_map);
1650 out:
1651 kfree(lport);
1652 return ERR_PTR(ret);
1653 }
1654
1655 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1656 {
1657 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1658 struct tcm_qla2xxx_lport, lport_wwn);
1659 struct scsi_qla_host *vha = lport->qla_vha;
1660 struct se_node_acl *node;
1661 u32 key = 0;
1662
1663 /*
1664 * Call into qla2x_target.c LLD logic to complete the
1665 * shutdown of struct qla_tgt after the call to
1666 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1667 */
1668 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1669 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1670
1671 qlt_lport_deregister(vha);
1672
1673 vfree(lport->lport_loopid_map);
1674 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1675 btree_remove32(&lport->lport_fcport_map, key);
1676 btree_destroy32(&lport->lport_fcport_map);
1677 kfree(lport);
1678 }
1679
1680 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1681 void *target_lport_ptr,
1682 u64 npiv_wwpn, u64 npiv_wwnn)
1683 {
1684 struct fc_vport *vport;
1685 struct Scsi_Host *sh = base_vha->host;
1686 struct scsi_qla_host *npiv_vha;
1687 struct tcm_qla2xxx_lport *lport =
1688 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1689 struct tcm_qla2xxx_lport *base_lport =
1690 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1691 struct fc_vport_identifiers vport_id;
1692
1693 if (!qla_tgt_mode_enabled(base_vha)) {
1694 pr_err("qla2xxx base_vha not enabled for target mode\n");
1695 return -EPERM;
1696 }
1697
1698 if (!base_lport || !base_lport->tpg_1 ||
1699 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1700 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1701 return -EPERM;
1702 }
1703
1704 memset(&vport_id, 0, sizeof(vport_id));
1705 vport_id.port_name = npiv_wwpn;
1706 vport_id.node_name = npiv_wwnn;
1707 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1708 vport_id.vport_type = FC_PORTTYPE_NPIV;
1709 vport_id.disable = false;
1710
1711 vport = fc_vport_create(sh, 0, &vport_id);
1712 if (!vport) {
1713 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1714 return -ENODEV;
1715 }
1716 /*
1717 * Setup local pointer to NPIV vhba + target_lport_ptr
1718 */
1719 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1720 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1721 lport->qla_vha = npiv_vha;
1722 scsi_host_get(npiv_vha->host);
1723 return 0;
1724 }
1725
1726
1727 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1728 struct target_fabric_configfs *tf,
1729 struct config_group *group,
1730 const char *name)
1731 {
1732 struct tcm_qla2xxx_lport *lport;
1733 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1734 char *p, tmp[128];
1735 int ret;
1736
1737 snprintf(tmp, 128, "%s", name);
1738
1739 p = strchr(tmp, '@');
1740 if (!p) {
1741 pr_err("Unable to locate NPIV '@' seperator\n");
1742 return ERR_PTR(-EINVAL);
1743 }
1744 *p++ = '\0';
1745
1746 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1747 return ERR_PTR(-EINVAL);
1748
1749 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1750 &npiv_wwpn, &npiv_wwnn) < 0)
1751 return ERR_PTR(-EINVAL);
1752
1753 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1754 if (!lport) {
1755 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1756 return ERR_PTR(-ENOMEM);
1757 }
1758 lport->lport_npiv_wwpn = npiv_wwpn;
1759 lport->lport_npiv_wwnn = npiv_wwnn;
1760 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1761
1762 ret = tcm_qla2xxx_init_lport(lport);
1763 if (ret != 0)
1764 goto out;
1765
1766 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1767 tcm_qla2xxx_lport_register_npiv_cb);
1768 if (ret != 0)
1769 goto out_lport;
1770
1771 return &lport->lport_wwn;
1772 out_lport:
1773 vfree(lport->lport_loopid_map);
1774 btree_destroy32(&lport->lport_fcport_map);
1775 out:
1776 kfree(lport);
1777 return ERR_PTR(ret);
1778 }
1779
1780 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1781 {
1782 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1783 struct tcm_qla2xxx_lport, lport_wwn);
1784 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1785 struct qla_hw_data *ha = npiv_vha->hw;
1786 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1787
1788 scsi_host_put(npiv_vha->host);
1789 /*
1790 * Notify libfc that we want to release the vha->fc_vport
1791 */
1792 fc_vport_terminate(npiv_vha->fc_vport);
1793 scsi_host_put(base_vha->host);
1794 kfree(lport);
1795 }
1796
1797
1798 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1799 char *page)
1800 {
1801 return sprintf(page,
1802 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1803 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1804 utsname()->machine);
1805 }
1806
1807 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1808
1809 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1810 &tcm_qla2xxx_wwn_attr_version,
1811 NULL,
1812 };
1813
1814 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1815 .module = THIS_MODULE,
1816 .name = "qla2xxx",
1817 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1818 /*
1819 * XXX: Limit assumes single page per scatter-gather-list entry.
1820 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1821 */
1822 .max_data_sg_nents = 1200,
1823 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1824 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1825 .tpg_get_tag = tcm_qla2xxx_get_tag,
1826 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1827 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1828 .tpg_check_demo_mode_write_protect =
1829 tcm_qla2xxx_check_demo_write_protect,
1830 .tpg_check_prod_mode_write_protect =
1831 tcm_qla2xxx_check_prod_write_protect,
1832 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1833 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1834 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1835 .check_stop_free = tcm_qla2xxx_check_stop_free,
1836 .release_cmd = tcm_qla2xxx_release_cmd,
1837 .close_session = tcm_qla2xxx_close_session,
1838 .sess_get_index = tcm_qla2xxx_sess_get_index,
1839 .sess_get_initiator_sid = NULL,
1840 .write_pending = tcm_qla2xxx_write_pending,
1841 .write_pending_status = tcm_qla2xxx_write_pending_status,
1842 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1843 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1844 .queue_data_in = tcm_qla2xxx_queue_data_in,
1845 .queue_status = tcm_qla2xxx_queue_status,
1846 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1847 .aborted_task = tcm_qla2xxx_aborted_task,
1848 /*
1849 * Setup function pointers for generic logic in
1850 * target_core_fabric_configfs.c
1851 */
1852 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1853 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1854 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1855 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1856 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1857
1858 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1859 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1860 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1861 };
1862
1863 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1864 .module = THIS_MODULE,
1865 .name = "qla2xxx_npiv",
1866 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1867 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1868 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1869 .tpg_get_tag = tcm_qla2xxx_get_tag,
1870 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1871 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1872 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1873 .tpg_check_prod_mode_write_protect =
1874 tcm_qla2xxx_check_prod_write_protect,
1875 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1876 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1877 .check_stop_free = tcm_qla2xxx_check_stop_free,
1878 .release_cmd = tcm_qla2xxx_release_cmd,
1879 .close_session = tcm_qla2xxx_close_session,
1880 .sess_get_index = tcm_qla2xxx_sess_get_index,
1881 .sess_get_initiator_sid = NULL,
1882 .write_pending = tcm_qla2xxx_write_pending,
1883 .write_pending_status = tcm_qla2xxx_write_pending_status,
1884 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1885 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1886 .queue_data_in = tcm_qla2xxx_queue_data_in,
1887 .queue_status = tcm_qla2xxx_queue_status,
1888 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1889 .aborted_task = tcm_qla2xxx_aborted_task,
1890 /*
1891 * Setup function pointers for generic logic in
1892 * target_core_fabric_configfs.c
1893 */
1894 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1895 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1896 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1897 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1898 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1899
1900 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1901 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1902 };
1903
1904 static int tcm_qla2xxx_register_configfs(void)
1905 {
1906 int ret;
1907
1908 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1909 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1910 utsname()->machine);
1911
1912 ret = target_register_template(&tcm_qla2xxx_ops);
1913 if (ret)
1914 return ret;
1915
1916 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1917 if (ret)
1918 goto out_fabric;
1919
1920 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1921 WQ_MEM_RECLAIM, 0);
1922 if (!tcm_qla2xxx_free_wq) {
1923 ret = -ENOMEM;
1924 goto out_fabric_npiv;
1925 }
1926
1927 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1928 if (!tcm_qla2xxx_cmd_wq) {
1929 ret = -ENOMEM;
1930 goto out_free_wq;
1931 }
1932
1933 return 0;
1934
1935 out_free_wq:
1936 destroy_workqueue(tcm_qla2xxx_free_wq);
1937 out_fabric_npiv:
1938 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1939 out_fabric:
1940 target_unregister_template(&tcm_qla2xxx_ops);
1941 return ret;
1942 }
1943
1944 static void tcm_qla2xxx_deregister_configfs(void)
1945 {
1946 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1947 destroy_workqueue(tcm_qla2xxx_free_wq);
1948
1949 target_unregister_template(&tcm_qla2xxx_ops);
1950 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1951 }
1952
1953 static int __init tcm_qla2xxx_init(void)
1954 {
1955 int ret;
1956
1957 ret = tcm_qla2xxx_register_configfs();
1958 if (ret < 0)
1959 return ret;
1960
1961 return 0;
1962 }
1963
1964 static void __exit tcm_qla2xxx_exit(void)
1965 {
1966 tcm_qla2xxx_deregister_configfs();
1967 }
1968
1969 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1970 MODULE_LICENSE("GPL");
1971 module_init(tcm_qla2xxx_init);
1972 module_exit(tcm_qla2xxx_exit);
Linux with added FPC-III support