workqueue: Make worker_attach/detach_pool() update worker->pool
[linux/fpc-iii.git] / drivers / scsi / qla2xxx / tcm_qla2xxx.c
blobaadfeaac389872f1ffabab94bf85d0ec126710fe
1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
5 * (c) Copyright 2010-2013 Datera, Inc.
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
12 * Copyright (c) 2010 Cisco Systems, Inc
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.
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 ****************************************************************************/
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/utsname.h>
29 #include <linux/vmalloc.h>
30 #include <linux/init.h>
31 #include <linux/list.h>
32 #include <linux/slab.h>
33 #include <linux/kthread.h>
34 #include <linux/types.h>
35 #include <linux/string.h>
36 #include <linux/configfs.h>
37 #include <linux/ctype.h>
38 #include <asm/unaligned.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_fabric.h>
46 #include "qla_def.h"
47 #include "qla_target.h"
48 #include "tcm_qla2xxx.h"
50 static struct workqueue_struct *tcm_qla2xxx_free_wq;
51 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
54 * Parse WWN.
55 * If strict, we require lower-case hex and colon separators to be sure
56 * the name is the same as what would be generated by ft_format_wwn()
57 * so the name and wwn are mapped one-to-one.
59 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
61 const char *cp;
62 char c;
63 u32 nibble;
64 u32 byte = 0;
65 u32 pos = 0;
66 u32 err;
68 *wwn = 0;
69 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
70 c = *cp;
71 if (c == '\n' && cp[1] == '\0')
72 continue;
73 if (strict && pos++ == 2 && byte++ < 7) {
74 pos = 0;
75 if (c == ':')
76 continue;
77 err = 1;
78 goto fail;
80 if (c == '\0') {
81 err = 2;
82 if (strict && byte != 8)
83 goto fail;
84 return cp - name;
86 err = 3;
87 if (isdigit(c))
88 nibble = c - '0';
89 else if (isxdigit(c) && (islower(c) || !strict))
90 nibble = tolower(c) - 'a' + 10;
91 else
92 goto fail;
93 *wwn = (*wwn << 4) | nibble;
95 err = 4;
96 fail:
97 pr_debug("err %u len %zu pos %u byte %u\n",
98 err, cp - name, pos, byte);
99 return -1;
102 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
104 u8 b[8];
106 put_unaligned_be64(wwn, b);
107 return snprintf(buf, len,
108 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
109 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
112 static char *tcm_qla2xxx_get_fabric_name(void)
114 return "qla2xxx";
118 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
120 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
122 unsigned int i, j;
123 u8 wwn[8];
125 memset(wwn, 0, sizeof(wwn));
127 /* Validate and store the new name */
128 for (i = 0, j = 0; i < 16; i++) {
129 int value;
131 value = hex_to_bin(*ns++);
132 if (value >= 0)
133 j = (j << 4) | value;
134 else
135 return -EINVAL;
137 if (i % 2) {
138 wwn[i/2] = j & 0xff;
139 j = 0;
143 *nm = wwn_to_u64(wwn);
144 return 0;
148 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
149 * store_fc_host_vport_create()
151 static int tcm_qla2xxx_npiv_parse_wwn(
152 const char *name,
153 size_t count,
154 u64 *wwpn,
155 u64 *wwnn)
157 unsigned int cnt = count;
158 int rc;
160 *wwpn = 0;
161 *wwnn = 0;
163 /* count may include a LF at end of string */
164 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
165 cnt--;
167 /* validate we have enough characters for WWPN */
168 if ((cnt != (16+1+16)) || (name[16] != ':'))
169 return -EINVAL;
171 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
172 if (rc != 0)
173 return rc;
175 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
176 if (rc != 0)
177 return rc;
179 return 0;
182 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
184 return "qla2xxx_npiv";
187 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
189 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
190 struct tcm_qla2xxx_tpg, se_tpg);
191 struct tcm_qla2xxx_lport *lport = tpg->lport;
193 return lport->lport_naa_name;
196 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
198 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
199 struct tcm_qla2xxx_tpg, se_tpg);
200 return tpg->lport_tpgt;
203 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
205 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
206 struct tcm_qla2xxx_tpg, se_tpg);
208 return tpg->tpg_attrib.generate_node_acls;
211 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
213 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
214 struct tcm_qla2xxx_tpg, se_tpg);
216 return tpg->tpg_attrib.cache_dynamic_acls;
219 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
222 struct tcm_qla2xxx_tpg, se_tpg);
224 return tpg->tpg_attrib.demo_mode_write_protect;
227 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
229 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
230 struct tcm_qla2xxx_tpg, se_tpg);
232 return tpg->tpg_attrib.prod_mode_write_protect;
235 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
237 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
238 struct tcm_qla2xxx_tpg, se_tpg);
240 return tpg->tpg_attrib.demo_mode_login_only;
243 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
246 struct tcm_qla2xxx_tpg, se_tpg);
248 return tpg->tpg_attrib.fabric_prot_type;
251 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
253 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
254 struct tcm_qla2xxx_tpg, se_tpg);
256 return tpg->lport_tpgt;
259 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
261 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
262 struct qla_tgt_mgmt_cmd, free_work);
264 transport_generic_free_cmd(&mcmd->se_cmd, 0);
268 * Called from qla_target_template->free_mcmd(), and will call
269 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
270 * release callback. qla_hw_data->hardware_lock is expected to be held
272 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
274 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
275 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
278 static void tcm_qla2xxx_complete_free(struct work_struct *work)
280 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
282 cmd->cmd_in_wq = 0;
284 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
286 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
287 cmd->trc_flags |= TRC_CMD_FREE;
288 transport_generic_free_cmd(&cmd->se_cmd, 0);
292 * Called from qla_target_template->free_cmd(), and will call
293 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
294 * release callback. qla_hw_data->hardware_lock is expected to be held
296 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
298 cmd->qpair->tgt_counters.core_qla_free_cmd++;
299 cmd->cmd_in_wq = 1;
301 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
302 cmd->trc_flags |= TRC_CMD_DONE;
304 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
305 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
309 * Called from struct target_core_fabric_ops->check_stop_free() context
311 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
313 struct qla_tgt_cmd *cmd;
315 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
316 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
317 cmd->trc_flags |= TRC_CMD_CHK_STOP;
320 return target_put_sess_cmd(se_cmd);
323 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
324 * fabric descriptor @se_cmd command to release
326 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
328 struct qla_tgt_cmd *cmd;
330 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
331 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
332 struct qla_tgt_mgmt_cmd, se_cmd);
333 qlt_free_mcmd(mcmd);
334 return;
337 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
338 qlt_free_cmd(cmd);
341 static void tcm_qla2xxx_release_session(struct kref *kref)
343 struct fc_port *sess = container_of(kref,
344 struct fc_port, sess_kref);
346 qlt_unreg_sess(sess);
349 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
351 if (!sess)
352 return;
354 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
355 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
358 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
360 struct fc_port *sess = se_sess->fabric_sess_ptr;
361 struct scsi_qla_host *vha;
362 unsigned long flags;
364 BUG_ON(!sess);
365 vha = sess->vha;
367 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
368 target_sess_cmd_list_set_waiting(se_sess);
369 tcm_qla2xxx_put_sess(sess);
370 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
373 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
375 return 0;
378 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
380 struct qla_tgt_cmd *cmd = container_of(se_cmd,
381 struct qla_tgt_cmd, se_cmd);
383 if (cmd->aborted) {
384 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
385 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
386 * already kick start the free.
388 pr_debug("write_pending aborted cmd[%p] refcount %d "
389 "transport_state %x, t_state %x, se_cmd_flags %x\n",
390 cmd, kref_read(&cmd->se_cmd.cmd_kref),
391 cmd->se_cmd.transport_state,
392 cmd->se_cmd.t_state,
393 cmd->se_cmd.se_cmd_flags);
394 return 0;
396 cmd->trc_flags |= TRC_XFR_RDY;
397 cmd->bufflen = se_cmd->data_length;
398 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
400 cmd->sg_cnt = se_cmd->t_data_nents;
401 cmd->sg = se_cmd->t_data_sg;
403 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
404 cmd->prot_sg = se_cmd->t_prot_sg;
405 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
406 se_cmd->pi_err = 0;
409 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
410 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
412 return qlt_rdy_to_xfer(cmd);
415 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
417 unsigned long flags;
419 * Check for WRITE_PENDING status to determine if we need to wait for
420 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
422 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
423 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
424 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
425 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
426 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
427 50);
428 return 0;
430 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
432 return 0;
435 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
437 return;
440 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
442 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
443 struct qla_tgt_cmd *cmd = container_of(se_cmd,
444 struct qla_tgt_cmd, se_cmd);
445 return cmd->state;
448 return 0;
452 * Called from process context in qla_target.c:qlt_do_work() code
454 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
455 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
456 int data_dir, int bidi)
458 struct se_cmd *se_cmd = &cmd->se_cmd;
459 struct se_session *se_sess;
460 struct fc_port *sess;
461 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
462 struct se_portal_group *se_tpg;
463 struct tcm_qla2xxx_tpg *tpg;
464 #endif
465 int flags = TARGET_SCF_ACK_KREF;
467 if (bidi)
468 flags |= TARGET_SCF_BIDI_OP;
470 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
471 flags |= TARGET_SCF_USE_CPUID;
473 sess = cmd->sess;
474 if (!sess) {
475 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
476 return -EINVAL;
479 se_sess = sess->se_sess;
480 if (!se_sess) {
481 pr_err("Unable to locate active struct se_session\n");
482 return -EINVAL;
485 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
486 se_tpg = se_sess->se_tpg;
487 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
488 if (unlikely(tpg->tpg_attrib.jam_host)) {
489 /* return, and dont run target_submit_cmd,discarding command */
490 return 0;
492 #endif
494 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
495 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
496 cmd->unpacked_lun, data_length, fcp_task_attr,
497 data_dir, flags);
500 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
502 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
505 * Ensure that the complete FCP WRITE payload has been received.
506 * Otherwise return an exception via CHECK_CONDITION status.
508 cmd->cmd_in_wq = 0;
510 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
511 if (!cmd->write_data_transferred) {
513 * Check if se_cmd has already been aborted via LUN_RESET, and
514 * waiting upon completion in tcm_qla2xxx_write_pending_status()
516 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
517 complete(&cmd->se_cmd.t_transport_stop_comp);
518 return;
521 switch (cmd->dif_err_code) {
522 case DIF_ERR_GRD:
523 cmd->se_cmd.pi_err =
524 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
525 break;
526 case DIF_ERR_REF:
527 cmd->se_cmd.pi_err =
528 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
529 break;
530 case DIF_ERR_APP:
531 cmd->se_cmd.pi_err =
532 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
533 break;
534 case DIF_ERR_NONE:
535 default:
536 break;
539 if (cmd->se_cmd.pi_err)
540 transport_generic_request_failure(&cmd->se_cmd,
541 cmd->se_cmd.pi_err);
542 else
543 transport_generic_request_failure(&cmd->se_cmd,
544 TCM_CHECK_CONDITION_ABORT_CMD);
546 return;
549 return target_execute_cmd(&cmd->se_cmd);
553 * Called from qla_target.c:qlt_do_ctio_completion()
555 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
557 cmd->trc_flags |= TRC_DATA_IN;
558 cmd->cmd_in_wq = 1;
559 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
560 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
563 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
565 return 0;
568 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
569 uint16_t *pfw_prot_opts)
571 struct se_cmd *se_cmd = &cmd->se_cmd;
573 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
574 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
576 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
577 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
579 return 0;
583 * Called from qla_target.c:qlt_issue_task_mgmt()
585 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
586 uint16_t tmr_func, uint32_t tag)
588 struct fc_port *sess = mcmd->sess;
589 struct se_cmd *se_cmd = &mcmd->se_cmd;
590 int transl_tmr_func = 0;
591 int flags = TARGET_SCF_ACK_KREF;
593 switch (tmr_func) {
594 case QLA_TGT_ABTS:
595 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
596 transl_tmr_func = TMR_ABORT_TASK;
597 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
598 break;
599 case QLA_TGT_2G_ABORT_TASK:
600 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
601 transl_tmr_func = TMR_ABORT_TASK;
602 break;
603 case QLA_TGT_CLEAR_ACA:
604 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
605 transl_tmr_func = TMR_CLEAR_ACA;
606 break;
607 case QLA_TGT_TARGET_RESET:
608 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
609 transl_tmr_func = TMR_TARGET_WARM_RESET;
610 break;
611 case QLA_TGT_LUN_RESET:
612 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
613 transl_tmr_func = TMR_LUN_RESET;
614 break;
615 case QLA_TGT_CLEAR_TS:
616 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
617 transl_tmr_func = TMR_CLEAR_TASK_SET;
618 break;
619 case QLA_TGT_ABORT_TS:
620 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
621 transl_tmr_func = TMR_ABORT_TASK_SET;
622 break;
623 default:
624 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
625 sess->vha->host_no, tmr_func);
626 return -ENOSYS;
629 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
630 transl_tmr_func, GFP_ATOMIC, tag, flags);
633 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
635 struct qla_tgt_cmd *cmd = container_of(se_cmd,
636 struct qla_tgt_cmd, se_cmd);
638 if (cmd->aborted) {
639 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
640 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
641 * already kick start the free.
643 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
644 "transport_state %x, t_state %x, se_cmd_flags %x\n",
645 cmd, kref_read(&cmd->se_cmd.cmd_kref),
646 cmd->se_cmd.transport_state,
647 cmd->se_cmd.t_state,
648 cmd->se_cmd.se_cmd_flags);
649 return 0;
652 cmd->trc_flags |= TRC_XMIT_DATA;
653 cmd->bufflen = se_cmd->data_length;
654 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
656 cmd->sg_cnt = se_cmd->t_data_nents;
657 cmd->sg = se_cmd->t_data_sg;
658 cmd->offset = 0;
660 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
661 cmd->prot_sg = se_cmd->t_prot_sg;
662 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
663 se_cmd->pi_err = 0;
666 * Now queue completed DATA_IN the qla2xxx LLD and response ring
668 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
669 se_cmd->scsi_status);
672 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
674 struct qla_tgt_cmd *cmd = container_of(se_cmd,
675 struct qla_tgt_cmd, se_cmd);
676 int xmit_type = QLA_TGT_XMIT_STATUS;
678 if (cmd->aborted) {
680 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
681 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
682 * already kick start the free.
684 pr_debug(
685 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
686 cmd, kref_read(&cmd->se_cmd.cmd_kref),
687 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
688 cmd->se_cmd.se_cmd_flags);
689 return 0;
691 cmd->bufflen = se_cmd->data_length;
692 cmd->sg = NULL;
693 cmd->sg_cnt = 0;
694 cmd->offset = 0;
695 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
696 if (cmd->trc_flags & TRC_XMIT_STATUS) {
697 pr_crit("Multiple calls for status = %p.\n", cmd);
698 dump_stack();
700 cmd->trc_flags |= TRC_XMIT_STATUS;
702 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
704 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
705 * for qla_tgt_xmit_response LLD code
707 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
708 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
709 se_cmd->residual_count = 0;
711 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
712 se_cmd->residual_count += se_cmd->data_length;
714 cmd->bufflen = 0;
717 * Now queue status response to qla2xxx LLD code and response ring
719 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
724 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
725 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
726 struct qla_tgt_mgmt_cmd, se_cmd);
728 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
729 mcmd, se_tmr->function, se_tmr->response);
731 * Do translation between TCM TM response codes and
732 * QLA2xxx FC TM response codes.
734 switch (se_tmr->response) {
735 case TMR_FUNCTION_COMPLETE:
736 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
737 break;
738 case TMR_TASK_DOES_NOT_EXIST:
739 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
740 break;
741 case TMR_FUNCTION_REJECTED:
742 mcmd->fc_tm_rsp = FC_TM_REJECT;
743 break;
744 case TMR_LUN_DOES_NOT_EXIST:
745 default:
746 mcmd->fc_tm_rsp = FC_TM_FAILED;
747 break;
750 * Queue the TM response to QLA2xxx LLD to build a
751 * CTIO response packet.
753 qlt_xmit_tm_rsp(mcmd);
756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
758 struct qla_tgt_cmd *cmd = container_of(se_cmd,
759 struct qla_tgt_cmd, se_cmd);
761 if (qlt_abort_cmd(cmd))
762 return;
765 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
766 struct tcm_qla2xxx_nacl *, struct fc_port *);
768 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
770 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
772 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
773 struct se_portal_group *se_tpg = se_nacl->se_tpg;
774 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
775 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
776 struct tcm_qla2xxx_lport, lport_wwn);
777 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
778 struct tcm_qla2xxx_nacl, se_node_acl);
779 void *node;
781 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
783 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
784 if (WARN_ON(node && (node != se_nacl))) {
786 * The nacl no longer matches what we think it should be.
787 * Most likely a new dynamic acl has been added while
788 * someone dropped the hardware lock. It clearly is a
789 * bug elsewhere, but this bit can't make things worse.
791 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
792 node, GFP_ATOMIC);
795 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
796 se_nacl, nacl->nport_wwnn, nacl->nport_id);
798 * Now clear the se_nacl and session pointers from our HW lport lookup
799 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
801 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
802 * target_wait_for_sess_cmds() before the session waits for outstanding
803 * I/O to complete, to avoid a race between session shutdown execution
804 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
806 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
809 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
811 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
812 target_sess_cmd_list_set_waiting(sess->se_sess);
815 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
816 const char *name)
818 struct tcm_qla2xxx_nacl *nacl =
819 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
820 u64 wwnn;
822 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
823 return -EINVAL;
825 nacl->nport_wwnn = wwnn;
826 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
828 return 0;
831 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
833 #define DEF_QLA_TPG_ATTRIB(name) \
835 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
836 struct config_item *item, char *page) \
838 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
839 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
840 struct tcm_qla2xxx_tpg, se_tpg); \
842 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
845 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
846 struct config_item *item, const char *page, size_t count) \
848 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
849 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
850 struct tcm_qla2xxx_tpg, se_tpg); \
851 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
852 unsigned long val; \
853 int ret; \
855 ret = kstrtoul(page, 0, &val); \
856 if (ret < 0) { \
857 pr_err("kstrtoul() failed with" \
858 " ret: %d\n", ret); \
859 return -EINVAL; \
862 if ((val != 0) && (val != 1)) { \
863 pr_err("Illegal boolean value %lu\n", val); \
864 return -EINVAL; \
867 a->name = val; \
869 return count; \
871 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
873 DEF_QLA_TPG_ATTRIB(generate_node_acls);
874 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
875 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
876 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
877 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
878 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
879 DEF_QLA_TPG_ATTRIB(jam_host);
880 #endif
882 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
883 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
884 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
885 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
886 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
887 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
888 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
889 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
890 #endif
891 NULL,
894 /* End items for tcm_qla2xxx_tpg_attrib_cit */
896 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
897 char *page)
899 struct se_portal_group *se_tpg = to_tpg(item);
900 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
901 struct tcm_qla2xxx_tpg, se_tpg);
903 return snprintf(page, PAGE_SIZE, "%d\n",
904 atomic_read(&tpg->lport_tpg_enabled));
907 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
909 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
910 struct tcm_qla2xxx_tpg, tpg_base_work);
911 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
912 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
914 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
915 atomic_set(&base_tpg->lport_tpg_enabled, 1);
916 qlt_enable_vha(base_vha);
918 complete(&base_tpg->tpg_base_comp);
921 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
923 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
924 struct tcm_qla2xxx_tpg, tpg_base_work);
925 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
926 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
928 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
929 atomic_set(&base_tpg->lport_tpg_enabled, 0);
930 target_undepend_item(&se_tpg->tpg_group.cg_item);
932 complete(&base_tpg->tpg_base_comp);
935 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
936 const char *page, size_t count)
938 struct se_portal_group *se_tpg = to_tpg(item);
939 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
940 struct tcm_qla2xxx_tpg, se_tpg);
941 unsigned long op;
942 int rc;
944 rc = kstrtoul(page, 0, &op);
945 if (rc < 0) {
946 pr_err("kstrtoul() returned %d\n", rc);
947 return -EINVAL;
949 if ((op != 1) && (op != 0)) {
950 pr_err("Illegal value for tpg_enable: %lu\n", op);
951 return -EINVAL;
953 if (op) {
954 if (atomic_read(&tpg->lport_tpg_enabled))
955 return -EEXIST;
957 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
958 } else {
959 if (!atomic_read(&tpg->lport_tpg_enabled))
960 return count;
962 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
964 init_completion(&tpg->tpg_base_comp);
965 schedule_work(&tpg->tpg_base_work);
966 wait_for_completion(&tpg->tpg_base_comp);
968 if (op) {
969 if (!atomic_read(&tpg->lport_tpg_enabled))
970 return -ENODEV;
971 } else {
972 if (atomic_read(&tpg->lport_tpg_enabled))
973 return -EPERM;
975 return count;
978 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
979 char *page)
981 return target_show_dynamic_sessions(to_tpg(item), page);
984 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
985 const char *page, size_t count)
987 struct se_portal_group *se_tpg = to_tpg(item);
988 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
989 struct tcm_qla2xxx_tpg, se_tpg);
990 unsigned long val;
991 int ret = kstrtoul(page, 0, &val);
993 if (ret) {
994 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
995 return ret;
997 if (val != 0 && val != 1 && val != 3) {
998 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
999 return -EINVAL;
1001 tpg->tpg_attrib.fabric_prot_type = val;
1003 return count;
1006 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
1007 char *page)
1009 struct se_portal_group *se_tpg = to_tpg(item);
1010 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1011 struct tcm_qla2xxx_tpg, se_tpg);
1013 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1016 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
1017 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
1018 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
1020 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1021 &tcm_qla2xxx_tpg_attr_enable,
1022 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1023 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1024 NULL,
1027 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1028 struct se_wwn *wwn,
1029 struct config_group *group,
1030 const char *name)
1032 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1033 struct tcm_qla2xxx_lport, lport_wwn);
1034 struct tcm_qla2xxx_tpg *tpg;
1035 unsigned long tpgt;
1036 int ret;
1038 if (strstr(name, "tpgt_") != name)
1039 return ERR_PTR(-EINVAL);
1040 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1041 return ERR_PTR(-EINVAL);
1043 if ((tpgt != 1)) {
1044 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1045 return ERR_PTR(-ENOSYS);
1048 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1049 if (!tpg) {
1050 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1051 return ERR_PTR(-ENOMEM);
1053 tpg->lport = lport;
1054 tpg->lport_tpgt = tpgt;
1056 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1057 * NodeACLs
1059 tpg->tpg_attrib.generate_node_acls = 1;
1060 tpg->tpg_attrib.demo_mode_write_protect = 1;
1061 tpg->tpg_attrib.cache_dynamic_acls = 1;
1062 tpg->tpg_attrib.demo_mode_login_only = 1;
1063 tpg->tpg_attrib.jam_host = 0;
1065 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1066 if (ret < 0) {
1067 kfree(tpg);
1068 return NULL;
1071 lport->tpg_1 = tpg;
1073 return &tpg->se_tpg;
1076 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1078 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1079 struct tcm_qla2xxx_tpg, se_tpg);
1080 struct tcm_qla2xxx_lport *lport = tpg->lport;
1081 struct scsi_qla_host *vha = lport->qla_vha;
1083 * Call into qla2x_target.c LLD logic to shutdown the active
1084 * FC Nexuses and disable target mode operation for this qla_hw_data
1086 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1087 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1089 core_tpg_deregister(se_tpg);
1091 * Clear local TPG=1 pointer for non NPIV mode.
1093 lport->tpg_1 = NULL;
1094 kfree(tpg);
1097 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1098 char *page)
1100 return tcm_qla2xxx_tpg_enable_show(item, page);
1103 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1104 const char *page, size_t count)
1106 struct se_portal_group *se_tpg = to_tpg(item);
1107 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1108 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1109 struct tcm_qla2xxx_lport, lport_wwn);
1110 struct scsi_qla_host *vha = lport->qla_vha;
1111 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1112 struct tcm_qla2xxx_tpg, se_tpg);
1113 unsigned long op;
1114 int rc;
1116 rc = kstrtoul(page, 0, &op);
1117 if (rc < 0) {
1118 pr_err("kstrtoul() returned %d\n", rc);
1119 return -EINVAL;
1121 if ((op != 1) && (op != 0)) {
1122 pr_err("Illegal value for tpg_enable: %lu\n", op);
1123 return -EINVAL;
1125 if (op) {
1126 if (atomic_read(&tpg->lport_tpg_enabled))
1127 return -EEXIST;
1129 atomic_set(&tpg->lport_tpg_enabled, 1);
1130 qlt_enable_vha(vha);
1131 } else {
1132 if (!atomic_read(&tpg->lport_tpg_enabled))
1133 return count;
1135 atomic_set(&tpg->lport_tpg_enabled, 0);
1136 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1139 return count;
1142 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1144 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1145 &tcm_qla2xxx_npiv_tpg_attr_enable,
1146 NULL,
1149 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1150 struct se_wwn *wwn,
1151 struct config_group *group,
1152 const char *name)
1154 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1155 struct tcm_qla2xxx_lport, lport_wwn);
1156 struct tcm_qla2xxx_tpg *tpg;
1157 unsigned long tpgt;
1158 int ret;
1160 if (strstr(name, "tpgt_") != name)
1161 return ERR_PTR(-EINVAL);
1162 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1163 return ERR_PTR(-EINVAL);
1165 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1166 if (!tpg) {
1167 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1168 return ERR_PTR(-ENOMEM);
1170 tpg->lport = lport;
1171 tpg->lport_tpgt = tpgt;
1174 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1175 * NodeACLs
1177 tpg->tpg_attrib.generate_node_acls = 1;
1178 tpg->tpg_attrib.demo_mode_write_protect = 1;
1179 tpg->tpg_attrib.cache_dynamic_acls = 1;
1180 tpg->tpg_attrib.demo_mode_login_only = 1;
1182 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1183 if (ret < 0) {
1184 kfree(tpg);
1185 return NULL;
1187 lport->tpg_1 = tpg;
1188 return &tpg->se_tpg;
1192 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1194 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(
1195 scsi_qla_host_t *vha,
1196 const uint8_t *s_id)
1198 struct tcm_qla2xxx_lport *lport;
1199 struct se_node_acl *se_nacl;
1200 struct tcm_qla2xxx_nacl *nacl;
1201 u32 key;
1203 lport = vha->vha_tgt.target_lport_ptr;
1204 if (!lport) {
1205 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1206 dump_stack();
1207 return NULL;
1210 key = sid_to_key(s_id);
1211 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1213 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1214 if (!se_nacl) {
1215 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1216 return NULL;
1218 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1219 se_nacl, se_nacl->initiatorname);
1221 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1222 if (!nacl->fc_port) {
1223 pr_err("Unable to locate struct fc_port\n");
1224 return NULL;
1227 return nacl->fc_port;
1231 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1233 static void tcm_qla2xxx_set_sess_by_s_id(
1234 struct tcm_qla2xxx_lport *lport,
1235 struct se_node_acl *new_se_nacl,
1236 struct tcm_qla2xxx_nacl *nacl,
1237 struct se_session *se_sess,
1238 struct fc_port *fc_port,
1239 uint8_t *s_id)
1241 u32 key;
1242 void *slot;
1243 int rc;
1245 key = sid_to_key(s_id);
1246 pr_debug("set_sess_by_s_id: %06x\n", key);
1248 slot = btree_lookup32(&lport->lport_fcport_map, key);
1249 if (!slot) {
1250 if (new_se_nacl) {
1251 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1252 nacl->nport_id = key;
1253 rc = btree_insert32(&lport->lport_fcport_map, key,
1254 new_se_nacl, GFP_ATOMIC);
1255 if (rc)
1256 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1257 (int)key);
1258 } else {
1259 pr_debug("Wiping nonexisting fc_port entry\n");
1262 fc_port->se_sess = se_sess;
1263 nacl->fc_port = fc_port;
1264 return;
1267 if (nacl->fc_port) {
1268 if (new_se_nacl == NULL) {
1269 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1270 btree_remove32(&lport->lport_fcport_map, key);
1271 nacl->fc_port = NULL;
1272 return;
1274 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1275 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1276 fc_port->se_sess = se_sess;
1277 nacl->fc_port = fc_port;
1278 return;
1281 if (new_se_nacl == NULL) {
1282 pr_debug("Clearing existing fc_port entry\n");
1283 btree_remove32(&lport->lport_fcport_map, key);
1284 return;
1287 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1288 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1289 fc_port->se_sess = se_sess;
1290 nacl->fc_port = fc_port;
1292 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1293 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1297 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1299 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1300 scsi_qla_host_t *vha,
1301 const uint16_t loop_id)
1303 struct tcm_qla2xxx_lport *lport;
1304 struct se_node_acl *se_nacl;
1305 struct tcm_qla2xxx_nacl *nacl;
1306 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1308 lport = vha->vha_tgt.target_lport_ptr;
1309 if (!lport) {
1310 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1311 dump_stack();
1312 return NULL;
1315 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1317 fc_loopid = lport->lport_loopid_map + loop_id;
1318 se_nacl = fc_loopid->se_nacl;
1319 if (!se_nacl) {
1320 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1321 loop_id);
1322 return NULL;
1325 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1327 if (!nacl->fc_port) {
1328 pr_err("Unable to locate struct fc_port\n");
1329 return NULL;
1332 return nacl->fc_port;
1336 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1338 static void tcm_qla2xxx_set_sess_by_loop_id(
1339 struct tcm_qla2xxx_lport *lport,
1340 struct se_node_acl *new_se_nacl,
1341 struct tcm_qla2xxx_nacl *nacl,
1342 struct se_session *se_sess,
1343 struct fc_port *fc_port,
1344 uint16_t loop_id)
1346 struct se_node_acl *saved_nacl;
1347 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1349 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1351 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1352 lport->lport_loopid_map)[loop_id];
1354 saved_nacl = fc_loopid->se_nacl;
1355 if (!saved_nacl) {
1356 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1357 fc_loopid->se_nacl = new_se_nacl;
1358 if (fc_port->se_sess != se_sess)
1359 fc_port->se_sess = se_sess;
1360 if (nacl->fc_port != fc_port)
1361 nacl->fc_port = fc_port;
1362 return;
1365 if (nacl->fc_port) {
1366 if (new_se_nacl == NULL) {
1367 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1368 fc_loopid->se_nacl = NULL;
1369 nacl->fc_port = NULL;
1370 return;
1373 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1374 fc_loopid->se_nacl = new_se_nacl;
1375 if (fc_port->se_sess != se_sess)
1376 fc_port->se_sess = se_sess;
1377 if (nacl->fc_port != fc_port)
1378 nacl->fc_port = fc_port;
1379 return;
1382 if (new_se_nacl == NULL) {
1383 pr_debug("Clearing fc_loopid->se_nacl\n");
1384 fc_loopid->se_nacl = NULL;
1385 return;
1388 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1389 fc_loopid->se_nacl = new_se_nacl;
1390 if (fc_port->se_sess != se_sess)
1391 fc_port->se_sess = se_sess;
1392 if (nacl->fc_port != fc_port)
1393 nacl->fc_port = fc_port;
1395 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1396 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1400 * Should always be called with qla_hw_data->tgt.sess_lock held.
1402 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1403 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1405 struct se_session *se_sess = sess->se_sess;
1406 unsigned char be_sid[3];
1408 be_sid[0] = sess->d_id.b.domain;
1409 be_sid[1] = sess->d_id.b.area;
1410 be_sid[2] = sess->d_id.b.al_pa;
1412 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1413 sess, be_sid);
1414 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1415 sess, sess->loop_id);
1418 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1420 struct qla_tgt *tgt = sess->tgt;
1421 struct qla_hw_data *ha = tgt->ha;
1422 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1423 struct se_session *se_sess;
1424 struct tcm_qla2xxx_lport *lport;
1426 BUG_ON(in_interrupt());
1428 se_sess = sess->se_sess;
1429 if (!se_sess) {
1430 pr_err("struct fc_port->se_sess is NULL\n");
1431 dump_stack();
1432 return;
1435 lport = vha->vha_tgt.target_lport_ptr;
1436 if (!lport) {
1437 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1438 dump_stack();
1439 return;
1441 target_wait_for_sess_cmds(se_sess);
1443 transport_deregister_session_configfs(sess->se_sess);
1444 transport_deregister_session(sess->se_sess);
1447 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1448 struct se_session *se_sess, void *p)
1450 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1451 struct tcm_qla2xxx_tpg, se_tpg);
1452 struct tcm_qla2xxx_lport *lport = tpg->lport;
1453 struct qla_hw_data *ha = lport->qla_vha->hw;
1454 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1455 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1456 struct tcm_qla2xxx_nacl, se_node_acl);
1457 struct fc_port *qlat_sess = p;
1458 uint16_t loop_id = qlat_sess->loop_id;
1459 unsigned long flags;
1460 unsigned char be_sid[3];
1462 be_sid[0] = qlat_sess->d_id.b.domain;
1463 be_sid[1] = qlat_sess->d_id.b.area;
1464 be_sid[2] = qlat_sess->d_id.b.al_pa;
1467 * And now setup se_nacl and session pointers into HW lport internal
1468 * mappings for fabric S_ID and LOOP_ID.
1470 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1471 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1472 se_sess, qlat_sess, be_sid);
1473 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1474 se_sess, qlat_sess, loop_id);
1475 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1477 return 0;
1481 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1482 * to locate struct se_node_acl
1484 static int tcm_qla2xxx_check_initiator_node_acl(
1485 scsi_qla_host_t *vha,
1486 unsigned char *fc_wwpn,
1487 struct fc_port *qlat_sess)
1489 struct qla_hw_data *ha = vha->hw;
1490 struct tcm_qla2xxx_lport *lport;
1491 struct tcm_qla2xxx_tpg *tpg;
1492 struct se_session *se_sess;
1493 unsigned char port_name[36];
1494 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1495 TCM_QLA2XXX_DEFAULT_TAGS;
1497 lport = vha->vha_tgt.target_lport_ptr;
1498 if (!lport) {
1499 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1500 dump_stack();
1501 return -EINVAL;
1504 * Locate the TPG=1 reference..
1506 tpg = lport->tpg_1;
1507 if (!tpg) {
1508 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1509 return -EINVAL;
1512 * Format the FCP Initiator port_name into colon seperated values to
1513 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1515 memset(&port_name, 0, 36);
1516 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1518 * Locate our struct se_node_acl either from an explict NodeACL created
1519 * via ConfigFS, or via running in TPG demo mode.
1521 se_sess = target_alloc_session(&tpg->se_tpg, num_tags,
1522 sizeof(struct qla_tgt_cmd),
1523 TARGET_PROT_ALL, port_name,
1524 qlat_sess, tcm_qla2xxx_session_cb);
1525 if (IS_ERR(se_sess))
1526 return PTR_ERR(se_sess);
1528 return 0;
1531 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1532 uint16_t loop_id, bool conf_compl_supported)
1534 struct qla_tgt *tgt = sess->tgt;
1535 struct qla_hw_data *ha = tgt->ha;
1536 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1537 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1538 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1539 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1540 struct tcm_qla2xxx_nacl, se_node_acl);
1541 u32 key;
1544 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1545 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1546 sess, sess->port_name,
1547 sess->loop_id, loop_id, sess->d_id.b.domain,
1548 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1549 s_id.b.area, s_id.b.al_pa);
1551 if (sess->loop_id != loop_id) {
1553 * Because we can shuffle loop IDs around and we
1554 * update different sessions non-atomically, we might
1555 * have overwritten this session's old loop ID
1556 * already, and we might end up overwriting some other
1557 * session that will be updated later. So we have to
1558 * be extra careful and we can't warn about those things...
1560 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1561 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1563 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1565 sess->loop_id = loop_id;
1568 if (sess->d_id.b24 != s_id.b24) {
1569 key = (((u32) sess->d_id.b.domain << 16) |
1570 ((u32) sess->d_id.b.area << 8) |
1571 ((u32) sess->d_id.b.al_pa));
1573 if (btree_lookup32(&lport->lport_fcport_map, key))
1574 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1575 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1576 sess->d_id.b.domain, sess->d_id.b.area,
1577 sess->d_id.b.al_pa);
1578 else
1579 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1580 sess->d_id.b.domain, sess->d_id.b.area,
1581 sess->d_id.b.al_pa);
1583 key = (((u32) s_id.b.domain << 16) |
1584 ((u32) s_id.b.area << 8) |
1585 ((u32) s_id.b.al_pa));
1587 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1588 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1589 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1590 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1591 } else {
1592 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1593 GFP_ATOMIC);
1596 sess->d_id = s_id;
1597 nacl->nport_id = key;
1600 sess->conf_compl_supported = conf_compl_supported;
1602 /* Reset logout parameters to default */
1603 sess->logout_on_delete = 1;
1604 sess->keep_nport_handle = 0;
1608 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1610 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1611 .handle_cmd = tcm_qla2xxx_handle_cmd,
1612 .handle_data = tcm_qla2xxx_handle_data,
1613 .handle_tmr = tcm_qla2xxx_handle_tmr,
1614 .free_cmd = tcm_qla2xxx_free_cmd,
1615 .free_mcmd = tcm_qla2xxx_free_mcmd,
1616 .free_session = tcm_qla2xxx_free_session,
1617 .update_sess = tcm_qla2xxx_update_sess,
1618 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1619 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1620 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1621 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1622 .put_sess = tcm_qla2xxx_put_sess,
1623 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1624 .get_dif_tags = tcm_qla2xxx_dif_tags,
1625 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1628 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1630 int rc;
1632 rc = btree_init32(&lport->lport_fcport_map);
1633 if (rc) {
1634 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1635 return rc;
1638 lport->lport_loopid_map = vzalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1639 if (!lport->lport_loopid_map) {
1640 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1641 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1642 btree_destroy32(&lport->lport_fcport_map);
1643 return -ENOMEM;
1645 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1646 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1647 return 0;
1650 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1651 void *target_lport_ptr,
1652 u64 npiv_wwpn, u64 npiv_wwnn)
1654 struct qla_hw_data *ha = vha->hw;
1655 struct tcm_qla2xxx_lport *lport =
1656 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1658 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1660 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1661 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1662 lport->qla_vha = vha;
1664 return 0;
1667 static struct se_wwn *tcm_qla2xxx_make_lport(
1668 struct target_fabric_configfs *tf,
1669 struct config_group *group,
1670 const char *name)
1672 struct tcm_qla2xxx_lport *lport;
1673 u64 wwpn;
1674 int ret = -ENODEV;
1676 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1677 return ERR_PTR(-EINVAL);
1679 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1680 if (!lport) {
1681 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1682 return ERR_PTR(-ENOMEM);
1684 lport->lport_wwpn = wwpn;
1685 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1686 wwpn);
1687 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1689 ret = tcm_qla2xxx_init_lport(lport);
1690 if (ret != 0)
1691 goto out;
1693 ret = qlt_lport_register(lport, wwpn, 0, 0,
1694 tcm_qla2xxx_lport_register_cb);
1695 if (ret != 0)
1696 goto out_lport;
1698 return &lport->lport_wwn;
1699 out_lport:
1700 vfree(lport->lport_loopid_map);
1701 btree_destroy32(&lport->lport_fcport_map);
1702 out:
1703 kfree(lport);
1704 return ERR_PTR(ret);
1707 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1709 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1710 struct tcm_qla2xxx_lport, lport_wwn);
1711 struct scsi_qla_host *vha = lport->qla_vha;
1712 struct se_node_acl *node;
1713 u32 key = 0;
1716 * Call into qla2x_target.c LLD logic to complete the
1717 * shutdown of struct qla_tgt after the call to
1718 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1720 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1721 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1723 qlt_lport_deregister(vha);
1725 vfree(lport->lport_loopid_map);
1726 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1727 btree_remove32(&lport->lport_fcport_map, key);
1728 btree_destroy32(&lport->lport_fcport_map);
1729 kfree(lport);
1732 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1733 void *target_lport_ptr,
1734 u64 npiv_wwpn, u64 npiv_wwnn)
1736 struct fc_vport *vport;
1737 struct Scsi_Host *sh = base_vha->host;
1738 struct scsi_qla_host *npiv_vha;
1739 struct tcm_qla2xxx_lport *lport =
1740 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1741 struct tcm_qla2xxx_lport *base_lport =
1742 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1743 struct fc_vport_identifiers vport_id;
1745 if (qla_ini_mode_enabled(base_vha)) {
1746 pr_err("qla2xxx base_vha not enabled for target mode\n");
1747 return -EPERM;
1750 if (!base_lport || !base_lport->tpg_1 ||
1751 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1752 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1753 return -EPERM;
1756 memset(&vport_id, 0, sizeof(vport_id));
1757 vport_id.port_name = npiv_wwpn;
1758 vport_id.node_name = npiv_wwnn;
1759 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1760 vport_id.vport_type = FC_PORTTYPE_NPIV;
1761 vport_id.disable = false;
1763 vport = fc_vport_create(sh, 0, &vport_id);
1764 if (!vport) {
1765 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1766 return -ENODEV;
1769 * Setup local pointer to NPIV vhba + target_lport_ptr
1771 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1772 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1773 lport->qla_vha = npiv_vha;
1774 scsi_host_get(npiv_vha->host);
1775 return 0;
1779 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1780 struct target_fabric_configfs *tf,
1781 struct config_group *group,
1782 const char *name)
1784 struct tcm_qla2xxx_lport *lport;
1785 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1786 char *p, tmp[128];
1787 int ret;
1789 snprintf(tmp, 128, "%s", name);
1791 p = strchr(tmp, '@');
1792 if (!p) {
1793 pr_err("Unable to locate NPIV '@' separator\n");
1794 return ERR_PTR(-EINVAL);
1796 *p++ = '\0';
1798 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1799 return ERR_PTR(-EINVAL);
1801 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1802 &npiv_wwpn, &npiv_wwnn) < 0)
1803 return ERR_PTR(-EINVAL);
1805 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1806 if (!lport) {
1807 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1808 return ERR_PTR(-ENOMEM);
1810 lport->lport_npiv_wwpn = npiv_wwpn;
1811 lport->lport_npiv_wwnn = npiv_wwnn;
1812 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1814 ret = tcm_qla2xxx_init_lport(lport);
1815 if (ret != 0)
1816 goto out;
1818 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1819 tcm_qla2xxx_lport_register_npiv_cb);
1820 if (ret != 0)
1821 goto out_lport;
1823 return &lport->lport_wwn;
1824 out_lport:
1825 vfree(lport->lport_loopid_map);
1826 btree_destroy32(&lport->lport_fcport_map);
1827 out:
1828 kfree(lport);
1829 return ERR_PTR(ret);
1832 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1834 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1835 struct tcm_qla2xxx_lport, lport_wwn);
1836 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1837 struct qla_hw_data *ha = npiv_vha->hw;
1838 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1840 scsi_host_put(npiv_vha->host);
1842 * Notify libfc that we want to release the vha->fc_vport
1844 fc_vport_terminate(npiv_vha->fc_vport);
1845 scsi_host_put(base_vha->host);
1846 kfree(lport);
1850 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1851 char *page)
1853 return sprintf(page,
1854 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1855 QLA2XXX_VERSION, utsname()->sysname,
1856 utsname()->machine, utsname()->release);
1859 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1861 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1862 &tcm_qla2xxx_wwn_attr_version,
1863 NULL,
1866 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1867 .module = THIS_MODULE,
1868 .name = "qla2xxx",
1869 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1871 * XXX: Limit assumes single page per scatter-gather-list entry.
1872 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1874 .max_data_sg_nents = 1200,
1875 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1876 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1877 .tpg_get_tag = tcm_qla2xxx_get_tag,
1878 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1879 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1880 .tpg_check_demo_mode_write_protect =
1881 tcm_qla2xxx_check_demo_write_protect,
1882 .tpg_check_prod_mode_write_protect =
1883 tcm_qla2xxx_check_prod_write_protect,
1884 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1885 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1886 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1887 .check_stop_free = tcm_qla2xxx_check_stop_free,
1888 .release_cmd = tcm_qla2xxx_release_cmd,
1889 .close_session = tcm_qla2xxx_close_session,
1890 .sess_get_index = tcm_qla2xxx_sess_get_index,
1891 .sess_get_initiator_sid = NULL,
1892 .write_pending = tcm_qla2xxx_write_pending,
1893 .write_pending_status = tcm_qla2xxx_write_pending_status,
1894 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1895 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1896 .queue_data_in = tcm_qla2xxx_queue_data_in,
1897 .queue_status = tcm_qla2xxx_queue_status,
1898 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1899 .aborted_task = tcm_qla2xxx_aborted_task,
1901 * Setup function pointers for generic logic in
1902 * target_core_fabric_configfs.c
1904 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1905 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1906 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1907 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1908 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1910 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1911 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1912 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1915 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1916 .module = THIS_MODULE,
1917 .name = "qla2xxx_npiv",
1918 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1919 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1920 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1921 .tpg_get_tag = tcm_qla2xxx_get_tag,
1922 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1923 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1924 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1925 .tpg_check_prod_mode_write_protect =
1926 tcm_qla2xxx_check_prod_write_protect,
1927 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1928 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1929 .check_stop_free = tcm_qla2xxx_check_stop_free,
1930 .release_cmd = tcm_qla2xxx_release_cmd,
1931 .close_session = tcm_qla2xxx_close_session,
1932 .sess_get_index = tcm_qla2xxx_sess_get_index,
1933 .sess_get_initiator_sid = NULL,
1934 .write_pending = tcm_qla2xxx_write_pending,
1935 .write_pending_status = tcm_qla2xxx_write_pending_status,
1936 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1937 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1938 .queue_data_in = tcm_qla2xxx_queue_data_in,
1939 .queue_status = tcm_qla2xxx_queue_status,
1940 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1941 .aborted_task = tcm_qla2xxx_aborted_task,
1943 * Setup function pointers for generic logic in
1944 * target_core_fabric_configfs.c
1946 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1947 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1948 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1949 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1950 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1952 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1953 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1956 static int tcm_qla2xxx_register_configfs(void)
1958 int ret;
1960 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1961 QLA2XXX_VERSION, utsname()->sysname,
1962 utsname()->machine, utsname()->release);
1964 ret = target_register_template(&tcm_qla2xxx_ops);
1965 if (ret)
1966 return ret;
1968 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1969 if (ret)
1970 goto out_fabric;
1972 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1973 WQ_MEM_RECLAIM, 0);
1974 if (!tcm_qla2xxx_free_wq) {
1975 ret = -ENOMEM;
1976 goto out_fabric_npiv;
1979 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1980 if (!tcm_qla2xxx_cmd_wq) {
1981 ret = -ENOMEM;
1982 goto out_free_wq;
1985 return 0;
1987 out_free_wq:
1988 destroy_workqueue(tcm_qla2xxx_free_wq);
1989 out_fabric_npiv:
1990 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1991 out_fabric:
1992 target_unregister_template(&tcm_qla2xxx_ops);
1993 return ret;
1996 static void tcm_qla2xxx_deregister_configfs(void)
1998 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1999 destroy_workqueue(tcm_qla2xxx_free_wq);
2001 target_unregister_template(&tcm_qla2xxx_ops);
2002 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2005 static int __init tcm_qla2xxx_init(void)
2007 int ret;
2009 ret = tcm_qla2xxx_register_configfs();
2010 if (ret < 0)
2011 return ret;
2013 return 0;
2016 static void __exit tcm_qla2xxx_exit(void)
2018 tcm_qla2xxx_deregister_configfs();
2021 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
2022 MODULE_LICENSE("GPL");
2023 module_init(tcm_qla2xxx_init);
2024 module_exit(tcm_qla2xxx_exit);