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 <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>
48 #include "qla_target.h"
49 #include "tcm_qla2xxx.h"
51 static struct workqueue_struct *tcm_qla2xxx_free_wq;
52 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
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.
60 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
70 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
72 if (c == '\n' && cp[1] == '\0')
74 if (strict && pos++ == 2 && byte++ < 7) {
83 if (strict && byte != 8)
90 else if (isxdigit(c) && (islower(c) || !strict))
91 nibble = tolower(c) - 'a' + 10;
94 *wwn = (*wwn << 4) | nibble;
98 pr_debug("err %u len %zu pos %u byte %u\n",
99 err, cp - name, pos, byte);
103 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
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]);
113 static char *tcm_qla2xxx_get_fabric_name(void)
119 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
121 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
126 memset(wwn, 0, sizeof(wwn));
128 /* Validate and store the new name */
129 for (i = 0, j = 0; i < 16; i++) {
132 value = hex_to_bin(*ns++);
134 j = (j << 4) | value;
144 *nm = wwn_to_u64(wwn);
149 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
150 * store_fc_host_vport_create()
152 static int tcm_qla2xxx_npiv_parse_wwn(
158 unsigned int cnt = count;
164 /* count may include a LF at end of string */
165 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
168 /* validate we have enough characters for WWPN */
169 if ((cnt != (16+1+16)) || (name[16] != ':'))
172 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
176 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
183 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
185 return "qla2xxx_npiv";
188 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
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;
194 return lport->lport_naa_name;
197 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
199 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
200 struct tcm_qla2xxx_tpg, se_tpg);
201 return tpg->lport_tpgt;
204 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
206 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
207 struct tcm_qla2xxx_tpg, se_tpg);
209 return tpg->tpg_attrib.generate_node_acls;
212 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
214 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
215 struct tcm_qla2xxx_tpg, se_tpg);
217 return tpg->tpg_attrib.cache_dynamic_acls;
220 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
223 struct tcm_qla2xxx_tpg, se_tpg);
225 return tpg->tpg_attrib.demo_mode_write_protect;
228 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
230 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
231 struct tcm_qla2xxx_tpg, se_tpg);
233 return tpg->tpg_attrib.prod_mode_write_protect;
236 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
239 struct tcm_qla2xxx_tpg, se_tpg);
241 return tpg->tpg_attrib.demo_mode_login_only;
244 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
246 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
247 struct tcm_qla2xxx_tpg, se_tpg);
249 return tpg->tpg_attrib.fabric_prot_type;
252 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
257 return tpg->lport_tpgt;
260 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
262 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
263 struct qla_tgt_mgmt_cmd, free_work);
265 transport_generic_free_cmd(&mcmd->se_cmd, 0);
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
273 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
275 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
276 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
279 static void tcm_qla2xxx_complete_free(struct work_struct *work)
281 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
285 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
288 cmd->trc_flags |= TRC_CMD_FREE;
289 transport_generic_free_cmd(&cmd->se_cmd, 0);
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
297 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
299 cmd->vha->tgt_counters.core_qla_free_cmd++;
302 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
303 cmd->trc_flags |= TRC_CMD_DONE;
305 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
306 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
310 * Called from struct target_core_fabric_ops->check_stop_free() context
312 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
314 struct qla_tgt_cmd *cmd;
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->trc_flags |= TRC_CMD_CHK_STOP;
321 return target_put_sess_cmd(se_cmd);
324 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
325 * fabric descriptor @se_cmd command to release
327 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
329 struct qla_tgt_cmd *cmd;
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);
338 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
342 static void tcm_qla2xxx_release_session(struct kref *kref)
344 struct fc_port *sess = container_of(kref,
345 struct fc_port, sess_kref);
347 qlt_unreg_sess(sess);
350 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
355 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
356 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
359 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
361 struct fc_port *sess = se_sess->fabric_sess_ptr;
362 struct scsi_qla_host *vha;
368 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
369 target_sess_cmd_list_set_waiting(se_sess);
370 tcm_qla2xxx_put_sess(sess);
371 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
374 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
379 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
381 struct qla_tgt_cmd *cmd = container_of(se_cmd,
382 struct qla_tgt_cmd, se_cmd);
385 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
386 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
387 * already kick start the free.
389 pr_debug("write_pending aborted cmd[%p] refcount %d "
390 "transport_state %x, t_state %x, se_cmd_flags %x\n",
391 cmd, kref_read(&cmd->se_cmd.cmd_kref),
392 cmd->se_cmd.transport_state,
394 cmd->se_cmd.se_cmd_flags);
397 cmd->trc_flags |= TRC_XFR_RDY;
398 cmd->bufflen = se_cmd->data_length;
399 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
401 cmd->sg_cnt = se_cmd->t_data_nents;
402 cmd->sg = se_cmd->t_data_sg;
404 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
405 cmd->prot_sg = se_cmd->t_prot_sg;
406 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
410 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
411 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
413 return qlt_rdy_to_xfer(cmd);
416 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
420 * Check for WRITE_PENDING status to determine if we need to wait for
421 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
423 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
424 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
425 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
426 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
427 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
431 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
436 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
441 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
443 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
444 struct qla_tgt_cmd *cmd = container_of(se_cmd,
445 struct qla_tgt_cmd, se_cmd);
453 * Called from process context in qla_target.c:qlt_do_work() code
455 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
456 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
457 int data_dir, int bidi)
459 struct se_cmd *se_cmd = &cmd->se_cmd;
460 struct se_session *se_sess;
461 struct fc_port *sess;
462 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
463 struct se_portal_group *se_tpg;
464 struct tcm_qla2xxx_tpg *tpg;
466 int flags = TARGET_SCF_ACK_KREF;
469 flags |= TARGET_SCF_BIDI_OP;
471 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
472 flags |= TARGET_SCF_USE_CPUID;
476 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
480 se_sess = sess->se_sess;
482 pr_err("Unable to locate active struct se_session\n");
486 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
487 se_tpg = se_sess->se_tpg;
488 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
489 if (unlikely(tpg->tpg_attrib.jam_host)) {
490 /* return, and dont run target_submit_cmd,discarding command */
495 cmd->vha->tgt_counters.qla_core_sbt_cmd++;
496 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
497 cmd->unpacked_lun, data_length, fcp_task_attr,
501 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
503 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
507 * Ensure that the complete FCP WRITE payload has been received.
508 * Otherwise return an exception via CHECK_CONDITION status.
512 spin_lock_irqsave(&cmd->cmd_lock, flags);
515 cmd->data_work_free = 1;
516 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
518 tcm_qla2xxx_free_cmd(cmd);
521 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
523 cmd->vha->tgt_counters.qla_core_ret_ctio++;
524 if (!cmd->write_data_transferred) {
526 * Check if se_cmd has already been aborted via LUN_RESET, and
527 * waiting upon completion in tcm_qla2xxx_write_pending_status()
529 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
530 complete(&cmd->se_cmd.t_transport_stop_comp);
534 if (cmd->se_cmd.pi_err)
535 transport_generic_request_failure(&cmd->se_cmd,
538 transport_generic_request_failure(&cmd->se_cmd,
539 TCM_CHECK_CONDITION_ABORT_CMD);
544 return target_execute_cmd(&cmd->se_cmd);
548 * Called from qla_target.c:qlt_do_ctio_completion()
550 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
552 cmd->trc_flags |= TRC_DATA_IN;
554 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
555 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
558 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
560 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
562 /* take an extra kref to prevent cmd free too early.
563 * need to wait for SCSI status/check condition to
564 * finish responding generate by transport_generic_request_failure.
566 kref_get(&cmd->se_cmd.cmd_kref);
567 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
571 * Called from qla_target.c:qlt_do_ctio_completion()
573 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
575 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
576 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
580 * Called from qla_target.c:qlt_issue_task_mgmt()
582 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
583 uint16_t tmr_func, uint32_t tag)
585 struct fc_port *sess = mcmd->sess;
586 struct se_cmd *se_cmd = &mcmd->se_cmd;
587 int transl_tmr_func = 0;
591 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
592 transl_tmr_func = TMR_ABORT_TASK;
594 case QLA_TGT_2G_ABORT_TASK:
595 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
596 transl_tmr_func = TMR_ABORT_TASK;
598 case QLA_TGT_CLEAR_ACA:
599 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
600 transl_tmr_func = TMR_CLEAR_ACA;
602 case QLA_TGT_TARGET_RESET:
603 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
604 transl_tmr_func = TMR_TARGET_WARM_RESET;
606 case QLA_TGT_LUN_RESET:
607 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
608 transl_tmr_func = TMR_LUN_RESET;
610 case QLA_TGT_CLEAR_TS:
611 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
612 transl_tmr_func = TMR_CLEAR_TASK_SET;
614 case QLA_TGT_ABORT_TS:
615 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
616 transl_tmr_func = TMR_ABORT_TASK_SET;
619 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
620 sess->vha->host_no, tmr_func);
624 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
625 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
628 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
630 struct qla_tgt_cmd *cmd = container_of(se_cmd,
631 struct qla_tgt_cmd, se_cmd);
634 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
635 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
636 * already kick start the free.
638 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
639 "transport_state %x, t_state %x, se_cmd_flags %x\n",
640 cmd, kref_read(&cmd->se_cmd.cmd_kref),
641 cmd->se_cmd.transport_state,
643 cmd->se_cmd.se_cmd_flags);
647 cmd->trc_flags |= TRC_XMIT_DATA;
648 cmd->bufflen = se_cmd->data_length;
649 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
651 cmd->sg_cnt = se_cmd->t_data_nents;
652 cmd->sg = se_cmd->t_data_sg;
655 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
656 cmd->prot_sg = se_cmd->t_prot_sg;
657 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
661 * Now queue completed DATA_IN the qla2xxx LLD and response ring
663 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
664 se_cmd->scsi_status);
667 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
669 struct qla_tgt_cmd *cmd = container_of(se_cmd,
670 struct qla_tgt_cmd, se_cmd);
671 int xmit_type = QLA_TGT_XMIT_STATUS;
673 cmd->bufflen = se_cmd->data_length;
677 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
678 if (cmd->trc_flags & TRC_XMIT_STATUS) {
679 pr_crit("Multiple calls for status = %p.\n", cmd);
682 cmd->trc_flags |= TRC_XMIT_STATUS;
684 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
686 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
687 * for qla_tgt_xmit_response LLD code
689 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
690 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
691 se_cmd->residual_count = 0;
693 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
694 se_cmd->residual_count += se_cmd->data_length;
699 * Now queue status response to qla2xxx LLD code and response ring
701 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
704 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
706 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
707 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
708 struct qla_tgt_mgmt_cmd, se_cmd);
710 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
711 mcmd, se_tmr->function, se_tmr->response);
713 * Do translation between TCM TM response codes and
714 * QLA2xxx FC TM response codes.
716 switch (se_tmr->response) {
717 case TMR_FUNCTION_COMPLETE:
718 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
720 case TMR_TASK_DOES_NOT_EXIST:
721 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
723 case TMR_FUNCTION_REJECTED:
724 mcmd->fc_tm_rsp = FC_TM_REJECT;
726 case TMR_LUN_DOES_NOT_EXIST:
728 mcmd->fc_tm_rsp = FC_TM_FAILED;
732 * Queue the TM response to QLA2xxx LLD to build a
733 * CTIO response packet.
735 qlt_xmit_tm_rsp(mcmd);
738 #define DATA_WORK_NOT_FREE(_cmd) (_cmd->data_work && !_cmd->data_work_free)
739 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
741 struct qla_tgt_cmd *cmd = container_of(se_cmd,
742 struct qla_tgt_cmd, se_cmd);
745 if (qlt_abort_cmd(cmd))
748 spin_lock_irqsave(&cmd->cmd_lock, flags);
749 if ((cmd->state == QLA_TGT_STATE_NEW)||
750 ((cmd->state == QLA_TGT_STATE_DATA_IN) &&
751 DATA_WORK_NOT_FREE(cmd))) {
752 cmd->data_work_free = 1;
753 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
755 * cmd has not reached fw, Use this trigger to free it.
757 tcm_qla2xxx_free_cmd(cmd);
760 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
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);
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,
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,
818 struct tcm_qla2xxx_nacl *nacl =
819 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
822 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
825 nacl->nport_wwnn = wwnn;
826 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
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; \
855 ret = kstrtoul(page, 0, &val); \
857 pr_err("kstrtoul() failed with" \
858 " ret: %d\n", ret); \
862 if ((val != 0) && (val != 1)) { \
863 pr_err("Illegal boolean value %lu\n", val); \
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);
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,
894 /* End items for tcm_qla2xxx_tpg_attrib_cit */
896 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
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);
944 rc = kstrtoul(page, 0, &op);
946 pr_err("kstrtoul() returned %d\n", rc);
949 if ((op != 1) && (op != 0)) {
950 pr_err("Illegal value for tpg_enable: %lu\n", op);
954 if (atomic_read(&tpg->lport_tpg_enabled))
957 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
959 if (!atomic_read(&tpg->lport_tpg_enabled))
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);
969 if (!atomic_read(&tpg->lport_tpg_enabled))
972 if (atomic_read(&tpg->lport_tpg_enabled))
978 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
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);
991 int ret = kstrtoul(page, 0, &val);
994 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
997 if (val != 0 && val != 1 && val != 3) {
998 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
1001 tpg->tpg_attrib.fabric_prot_type = val;
1006 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
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,
1027 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1029 struct config_group *group,
1032 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1033 struct tcm_qla2xxx_lport, lport_wwn);
1034 struct tcm_qla2xxx_tpg *tpg;
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);
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);
1050 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1051 return ERR_PTR(-ENOMEM);
1054 tpg->lport_tpgt = tpgt;
1056 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
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);
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;
1097 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
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);
1116 rc = kstrtoul(page, 0, &op);
1118 pr_err("kstrtoul() returned %d\n", rc);
1121 if ((op != 1) && (op != 0)) {
1122 pr_err("Illegal value for tpg_enable: %lu\n", op);
1126 if (atomic_read(&tpg->lport_tpg_enabled))
1129 atomic_set(&tpg->lport_tpg_enabled, 1);
1130 qlt_enable_vha(vha);
1132 if (!atomic_read(&tpg->lport_tpg_enabled))
1135 atomic_set(&tpg->lport_tpg_enabled, 0);
1136 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
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,
1149 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1151 struct config_group *group,
1154 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1155 struct tcm_qla2xxx_lport, lport_wwn);
1156 struct tcm_qla2xxx_tpg *tpg;
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);
1167 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1168 return ERR_PTR(-ENOMEM);
1171 tpg->lport_tpgt = tpgt;
1174 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
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);
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;
1203 lport = vha->vha_tgt.target_lport_ptr;
1205 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
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);
1215 pr_debug("Unable to locate s_id: 0x%06x\n", key);
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");
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,
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);
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);
1256 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1259 pr_debug("Wiping nonexisting fc_port entry\n");
1262 fc_port->se_sess = se_sess;
1263 nacl->fc_port = fc_port;
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;
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;
1281 if (new_se_nacl == NULL) {
1282 pr_debug("Clearing existing fc_port entry\n");
1283 btree_remove32(&lport->lport_fcport_map, key);
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;
1310 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
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;
1320 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
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");
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,
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;
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;
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;
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;
1382 if (new_se_nacl == NULL) {
1383 pr_debug("Clearing fc_loopid->se_nacl\n");
1384 fc_loopid->se_nacl = NULL;
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,
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;
1430 pr_err("struct fc_port->se_sess is NULL\n");
1435 lport = vha->vha_tgt.target_lport_ptr;
1437 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
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);
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;
1499 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1504 * Locate the TPG=1 reference..
1508 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
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);
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);
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);
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);
1592 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
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_dif_err = tcm_qla2xxx_handle_dif_err,
1614 .handle_tmr = tcm_qla2xxx_handle_tmr,
1615 .free_cmd = tcm_qla2xxx_free_cmd,
1616 .free_mcmd = tcm_qla2xxx_free_mcmd,
1617 .free_session = tcm_qla2xxx_free_session,
1618 .update_sess = tcm_qla2xxx_update_sess,
1619 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1620 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1621 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1622 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1623 .put_sess = tcm_qla2xxx_put_sess,
1624 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1627 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1631 rc = btree_init32(&lport->lport_fcport_map);
1633 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1637 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
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);
1645 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1647 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1648 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1652 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1653 void *target_lport_ptr,
1654 u64 npiv_wwpn, u64 npiv_wwnn)
1656 struct qla_hw_data *ha = vha->hw;
1657 struct tcm_qla2xxx_lport *lport =
1658 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1660 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1662 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1663 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1664 lport->qla_vha = vha;
1669 static struct se_wwn *tcm_qla2xxx_make_lport(
1670 struct target_fabric_configfs *tf,
1671 struct config_group *group,
1674 struct tcm_qla2xxx_lport *lport;
1678 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1679 return ERR_PTR(-EINVAL);
1681 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1683 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1684 return ERR_PTR(-ENOMEM);
1686 lport->lport_wwpn = wwpn;
1687 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1689 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1691 ret = tcm_qla2xxx_init_lport(lport);
1695 ret = qlt_lport_register(lport, wwpn, 0, 0,
1696 tcm_qla2xxx_lport_register_cb);
1700 return &lport->lport_wwn;
1702 vfree(lport->lport_loopid_map);
1703 btree_destroy32(&lport->lport_fcport_map);
1706 return ERR_PTR(ret);
1709 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1711 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1712 struct tcm_qla2xxx_lport, lport_wwn);
1713 struct scsi_qla_host *vha = lport->qla_vha;
1714 struct se_node_acl *node;
1718 * Call into qla2x_target.c LLD logic to complete the
1719 * shutdown of struct qla_tgt after the call to
1720 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1722 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1723 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1725 qlt_lport_deregister(vha);
1727 vfree(lport->lport_loopid_map);
1728 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1729 btree_remove32(&lport->lport_fcport_map, key);
1730 btree_destroy32(&lport->lport_fcport_map);
1734 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1735 void *target_lport_ptr,
1736 u64 npiv_wwpn, u64 npiv_wwnn)
1738 struct fc_vport *vport;
1739 struct Scsi_Host *sh = base_vha->host;
1740 struct scsi_qla_host *npiv_vha;
1741 struct tcm_qla2xxx_lport *lport =
1742 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1743 struct tcm_qla2xxx_lport *base_lport =
1744 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1745 struct fc_vport_identifiers vport_id;
1747 if (qla_ini_mode_enabled(base_vha)) {
1748 pr_err("qla2xxx base_vha not enabled for target mode\n");
1752 if (!base_lport || !base_lport->tpg_1 ||
1753 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1754 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1758 memset(&vport_id, 0, sizeof(vport_id));
1759 vport_id.port_name = npiv_wwpn;
1760 vport_id.node_name = npiv_wwnn;
1761 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1762 vport_id.vport_type = FC_PORTTYPE_NPIV;
1763 vport_id.disable = false;
1765 vport = fc_vport_create(sh, 0, &vport_id);
1767 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1771 * Setup local pointer to NPIV vhba + target_lport_ptr
1773 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1774 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1775 lport->qla_vha = npiv_vha;
1776 scsi_host_get(npiv_vha->host);
1781 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1782 struct target_fabric_configfs *tf,
1783 struct config_group *group,
1786 struct tcm_qla2xxx_lport *lport;
1787 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1791 snprintf(tmp, 128, "%s", name);
1793 p = strchr(tmp, '@');
1795 pr_err("Unable to locate NPIV '@' separator\n");
1796 return ERR_PTR(-EINVAL);
1800 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1801 return ERR_PTR(-EINVAL);
1803 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1804 &npiv_wwpn, &npiv_wwnn) < 0)
1805 return ERR_PTR(-EINVAL);
1807 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1809 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1810 return ERR_PTR(-ENOMEM);
1812 lport->lport_npiv_wwpn = npiv_wwpn;
1813 lport->lport_npiv_wwnn = npiv_wwnn;
1814 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1816 ret = tcm_qla2xxx_init_lport(lport);
1820 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1821 tcm_qla2xxx_lport_register_npiv_cb);
1825 return &lport->lport_wwn;
1827 vfree(lport->lport_loopid_map);
1828 btree_destroy32(&lport->lport_fcport_map);
1831 return ERR_PTR(ret);
1834 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1836 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1837 struct tcm_qla2xxx_lport, lport_wwn);
1838 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1839 struct qla_hw_data *ha = npiv_vha->hw;
1840 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1842 scsi_host_put(npiv_vha->host);
1844 * Notify libfc that we want to release the vha->fc_vport
1846 fc_vport_terminate(npiv_vha->fc_vport);
1847 scsi_host_put(base_vha->host);
1852 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1855 return sprintf(page,
1856 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1857 UTS_RELEASE"\n", QLA2XXX_VERSION, utsname()->sysname,
1858 utsname()->machine);
1861 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1863 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1864 &tcm_qla2xxx_wwn_attr_version,
1868 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1869 .module = THIS_MODULE,
1871 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1873 * XXX: Limit assumes single page per scatter-gather-list entry.
1874 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1876 .max_data_sg_nents = 1200,
1877 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1878 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1879 .tpg_get_tag = tcm_qla2xxx_get_tag,
1880 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1881 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1882 .tpg_check_demo_mode_write_protect =
1883 tcm_qla2xxx_check_demo_write_protect,
1884 .tpg_check_prod_mode_write_protect =
1885 tcm_qla2xxx_check_prod_write_protect,
1886 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1887 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1888 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1889 .check_stop_free = tcm_qla2xxx_check_stop_free,
1890 .release_cmd = tcm_qla2xxx_release_cmd,
1891 .close_session = tcm_qla2xxx_close_session,
1892 .sess_get_index = tcm_qla2xxx_sess_get_index,
1893 .sess_get_initiator_sid = NULL,
1894 .write_pending = tcm_qla2xxx_write_pending,
1895 .write_pending_status = tcm_qla2xxx_write_pending_status,
1896 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1897 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1898 .queue_data_in = tcm_qla2xxx_queue_data_in,
1899 .queue_status = tcm_qla2xxx_queue_status,
1900 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1901 .aborted_task = tcm_qla2xxx_aborted_task,
1903 * Setup function pointers for generic logic in
1904 * target_core_fabric_configfs.c
1906 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1907 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1908 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1909 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1910 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1912 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1913 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1914 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1917 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1918 .module = THIS_MODULE,
1919 .name = "qla2xxx_npiv",
1920 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1921 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1922 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1923 .tpg_get_tag = tcm_qla2xxx_get_tag,
1924 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1925 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1926 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1927 .tpg_check_prod_mode_write_protect =
1928 tcm_qla2xxx_check_prod_write_protect,
1929 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1930 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1931 .check_stop_free = tcm_qla2xxx_check_stop_free,
1932 .release_cmd = tcm_qla2xxx_release_cmd,
1933 .close_session = tcm_qla2xxx_close_session,
1934 .sess_get_index = tcm_qla2xxx_sess_get_index,
1935 .sess_get_initiator_sid = NULL,
1936 .write_pending = tcm_qla2xxx_write_pending,
1937 .write_pending_status = tcm_qla2xxx_write_pending_status,
1938 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1939 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1940 .queue_data_in = tcm_qla2xxx_queue_data_in,
1941 .queue_status = tcm_qla2xxx_queue_status,
1942 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1943 .aborted_task = tcm_qla2xxx_aborted_task,
1945 * Setup function pointers for generic logic in
1946 * target_core_fabric_configfs.c
1948 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1949 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1950 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1951 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1952 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1954 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1955 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1958 static int tcm_qla2xxx_register_configfs(void)
1962 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1963 UTS_RELEASE"\n", QLA2XXX_VERSION, utsname()->sysname,
1964 utsname()->machine);
1966 ret = target_register_template(&tcm_qla2xxx_ops);
1970 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1974 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1976 if (!tcm_qla2xxx_free_wq) {
1978 goto out_fabric_npiv;
1981 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1982 if (!tcm_qla2xxx_cmd_wq) {
1990 destroy_workqueue(tcm_qla2xxx_free_wq);
1992 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1994 target_unregister_template(&tcm_qla2xxx_ops);
1998 static void tcm_qla2xxx_deregister_configfs(void)
2000 destroy_workqueue(tcm_qla2xxx_cmd_wq);
2001 destroy_workqueue(tcm_qla2xxx_free_wq);
2003 target_unregister_template(&tcm_qla2xxx_ops);
2004 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2007 static int __init tcm_qla2xxx_init(void)
2011 ret = tcm_qla2xxx_register_configfs();
2018 static void __exit tcm_qla2xxx_exit(void)
2020 tcm_qla2xxx_deregister_configfs();
2023 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
2024 MODULE_LICENSE("GPL");
2025 module_init(tcm_qla2xxx_init);
2026 module_exit(tcm_qla2xxx_exit);