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->cmd_flags & BIT_16);
287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
288 cmd->cmd_flags |= BIT_16;
289 transport_generic_free_cmd(&cmd->se_cmd, 0);
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 BUG_ON(cmd->cmd_flags & BIT_20);
303 cmd->cmd_flags |= BIT_20;
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->cmd_flags |= BIT_14;
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 int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
344 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
345 struct scsi_qla_host *vha;
351 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
352 target_sess_cmd_list_set_waiting(se_sess);
353 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
358 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
360 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
361 struct scsi_qla_host *vha;
367 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
368 qlt_unreg_sess(sess);
369 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
372 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
377 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
379 struct qla_tgt_cmd *cmd = container_of(se_cmd,
380 struct qla_tgt_cmd, se_cmd);
383 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
384 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
385 * already kick start the free.
387 pr_debug("write_pending aborted cmd[%p] refcount %d "
388 "transport_state %x, t_state %x, se_cmd_flags %x\n",
389 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
390 cmd->se_cmd.transport_state,
392 cmd->se_cmd.se_cmd_flags);
395 cmd->cmd_flags |= BIT_3;
396 cmd->bufflen = se_cmd->data_length;
397 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
399 cmd->sg_cnt = se_cmd->t_data_nents;
400 cmd->sg = se_cmd->t_data_sg;
402 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
403 cmd->prot_sg = se_cmd->t_prot_sg;
404 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
408 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
409 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
411 return qlt_rdy_to_xfer(cmd);
414 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
418 * Check for WRITE_PENDING status to determine if we need to wait for
419 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
421 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
422 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
423 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
424 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
425 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
429 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
434 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
439 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
441 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
442 struct qla_tgt_cmd *cmd = container_of(se_cmd,
443 struct qla_tgt_cmd, se_cmd);
451 * Called from process context in qla_target.c:qlt_do_work() code
453 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
454 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
455 int data_dir, int bidi)
457 struct se_cmd *se_cmd = &cmd->se_cmd;
458 struct se_session *se_sess;
459 struct qla_tgt_sess *sess;
460 int flags = TARGET_SCF_ACK_KREF;
463 flags |= TARGET_SCF_BIDI_OP;
465 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
466 flags |= TARGET_SCF_USE_CPUID;
470 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
474 se_sess = sess->se_sess;
476 pr_err("Unable to locate active struct se_session\n");
480 cmd->vha->tgt_counters.qla_core_sbt_cmd++;
481 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
482 cmd->unpacked_lun, data_length, fcp_task_attr,
486 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
488 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
492 * Ensure that the complete FCP WRITE payload has been received.
493 * Otherwise return an exception via CHECK_CONDITION status.
497 spin_lock_irqsave(&cmd->cmd_lock, flags);
498 cmd->cmd_flags |= CMD_FLAG_DATA_WORK;
500 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
501 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
503 tcm_qla2xxx_free_cmd(cmd);
506 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
508 cmd->vha->tgt_counters.qla_core_ret_ctio++;
509 if (!cmd->write_data_transferred) {
511 * Check if se_cmd has already been aborted via LUN_RESET, and
512 * waiting upon completion in tcm_qla2xxx_write_pending_status()
514 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
515 complete(&cmd->se_cmd.t_transport_stop_comp);
519 if (cmd->se_cmd.pi_err)
520 transport_generic_request_failure(&cmd->se_cmd,
523 transport_generic_request_failure(&cmd->se_cmd,
524 TCM_CHECK_CONDITION_ABORT_CMD);
529 return target_execute_cmd(&cmd->se_cmd);
533 * Called from qla_target.c:qlt_do_ctio_completion()
535 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
537 cmd->cmd_flags |= BIT_10;
539 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
540 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
543 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
545 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
547 /* take an extra kref to prevent cmd free too early.
548 * need to wait for SCSI status/check condition to
549 * finish responding generate by transport_generic_request_failure.
551 kref_get(&cmd->se_cmd.cmd_kref);
552 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
556 * Called from qla_target.c:qlt_do_ctio_completion()
558 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
560 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
561 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
565 * Called from qla_target.c:qlt_issue_task_mgmt()
567 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
568 uint8_t tmr_func, uint32_t tag)
570 struct qla_tgt_sess *sess = mcmd->sess;
571 struct se_cmd *se_cmd = &mcmd->se_cmd;
573 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
574 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
577 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
579 struct qla_tgt_cmd *cmd = container_of(se_cmd,
580 struct qla_tgt_cmd, se_cmd);
583 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
584 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
585 * already kick start the free.
587 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
588 "transport_state %x, t_state %x, se_cmd_flags %x\n",
589 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
590 cmd->se_cmd.transport_state,
592 cmd->se_cmd.se_cmd_flags);
596 cmd->cmd_flags |= BIT_4;
597 cmd->bufflen = se_cmd->data_length;
598 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
600 cmd->sg_cnt = se_cmd->t_data_nents;
601 cmd->sg = se_cmd->t_data_sg;
604 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
605 cmd->prot_sg = se_cmd->t_prot_sg;
606 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
610 * Now queue completed DATA_IN the qla2xxx LLD and response ring
612 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
613 se_cmd->scsi_status);
616 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
618 struct qla_tgt_cmd *cmd = container_of(se_cmd,
619 struct qla_tgt_cmd, se_cmd);
620 int xmit_type = QLA_TGT_XMIT_STATUS;
622 cmd->bufflen = se_cmd->data_length;
626 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
627 if (cmd->cmd_flags & BIT_5) {
628 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
631 cmd->cmd_flags |= BIT_5;
633 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
635 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
636 * for qla_tgt_xmit_response LLD code
638 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
639 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
640 se_cmd->residual_count = 0;
642 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
643 se_cmd->residual_count += se_cmd->data_length;
648 * Now queue status response to qla2xxx LLD code and response ring
650 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
653 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
655 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
656 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
657 struct qla_tgt_mgmt_cmd, se_cmd);
659 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
660 mcmd, se_tmr->function, se_tmr->response);
662 * Do translation between TCM TM response codes and
663 * QLA2xxx FC TM response codes.
665 switch (se_tmr->response) {
666 case TMR_FUNCTION_COMPLETE:
667 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
669 case TMR_TASK_DOES_NOT_EXIST:
670 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
672 case TMR_FUNCTION_REJECTED:
673 mcmd->fc_tm_rsp = FC_TM_REJECT;
675 case TMR_LUN_DOES_NOT_EXIST:
677 mcmd->fc_tm_rsp = FC_TM_FAILED;
681 * Queue the TM response to QLA2xxx LLD to build a
682 * CTIO response packet.
684 qlt_xmit_tm_rsp(mcmd);
688 #define DATA_WORK_NOT_FREE(_flags) \
689 (( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \
691 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
693 struct qla_tgt_cmd *cmd = container_of(se_cmd,
694 struct qla_tgt_cmd, se_cmd);
697 if (qlt_abort_cmd(cmd))
700 spin_lock_irqsave(&cmd->cmd_lock, flags);
701 if ((cmd->state == QLA_TGT_STATE_NEW)||
702 ((cmd->state == QLA_TGT_STATE_DATA_IN) &&
703 DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) {
705 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE;
706 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
707 /* Cmd have not reached firmware.
708 * Use this trigger to free it. */
709 tcm_qla2xxx_free_cmd(cmd);
712 spin_unlock_irqrestore(&cmd->cmd_lock, flags);
717 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
718 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
720 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
722 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
724 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
725 struct se_portal_group *se_tpg = se_nacl->se_tpg;
726 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
727 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
728 struct tcm_qla2xxx_lport, lport_wwn);
729 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
730 struct tcm_qla2xxx_nacl, se_node_acl);
733 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
735 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
736 if (WARN_ON(node && (node != se_nacl))) {
738 * The nacl no longer matches what we think it should be.
739 * Most likely a new dynamic acl has been added while
740 * someone dropped the hardware lock. It clearly is a
741 * bug elsewhere, but this bit can't make things worse.
743 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
747 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
748 se_nacl, nacl->nport_wwnn, nacl->nport_id);
750 * Now clear the se_nacl and session pointers from our HW lport lookup
751 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
753 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
754 * target_wait_for_sess_cmds() before the session waits for outstanding
755 * I/O to complete, to avoid a race between session shutdown execution
756 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
758 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
761 static void tcm_qla2xxx_release_session(struct kref *kref)
763 struct se_session *se_sess = container_of(kref,
764 struct se_session, sess_kref);
766 qlt_unreg_sess(se_sess->fabric_sess_ptr);
769 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
774 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
775 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
778 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
780 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
781 target_sess_cmd_list_set_waiting(sess->se_sess);
784 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
787 struct tcm_qla2xxx_nacl *nacl =
788 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
791 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
794 nacl->nport_wwnn = wwnn;
795 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
800 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
802 #define DEF_QLA_TPG_ATTRIB(name) \
804 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
805 struct config_item *item, char *page) \
807 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
808 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
809 struct tcm_qla2xxx_tpg, se_tpg); \
811 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
814 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
815 struct config_item *item, const char *page, size_t count) \
817 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
818 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
819 struct tcm_qla2xxx_tpg, se_tpg); \
820 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
824 ret = kstrtoul(page, 0, &val); \
826 pr_err("kstrtoul() failed with" \
827 " ret: %d\n", ret); \
831 if ((val != 0) && (val != 1)) { \
832 pr_err("Illegal boolean value %lu\n", val); \
840 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
842 DEF_QLA_TPG_ATTRIB(generate_node_acls);
843 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
844 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
845 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
846 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
848 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
849 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
850 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
851 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
852 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
853 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
857 /* End items for tcm_qla2xxx_tpg_attrib_cit */
859 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
862 struct se_portal_group *se_tpg = to_tpg(item);
863 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
864 struct tcm_qla2xxx_tpg, se_tpg);
866 return snprintf(page, PAGE_SIZE, "%d\n",
867 atomic_read(&tpg->lport_tpg_enabled));
870 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
872 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
873 struct tcm_qla2xxx_tpg, tpg_base_work);
874 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
875 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
877 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
878 atomic_set(&base_tpg->lport_tpg_enabled, 1);
879 qlt_enable_vha(base_vha);
881 complete(&base_tpg->tpg_base_comp);
884 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
886 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
887 struct tcm_qla2xxx_tpg, tpg_base_work);
888 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
889 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
891 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
892 atomic_set(&base_tpg->lport_tpg_enabled, 0);
893 target_undepend_item(&se_tpg->tpg_group.cg_item);
895 complete(&base_tpg->tpg_base_comp);
898 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
899 const char *page, size_t count)
901 struct se_portal_group *se_tpg = to_tpg(item);
902 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
903 struct tcm_qla2xxx_tpg, se_tpg);
907 rc = kstrtoul(page, 0, &op);
909 pr_err("kstrtoul() returned %d\n", rc);
912 if ((op != 1) && (op != 0)) {
913 pr_err("Illegal value for tpg_enable: %lu\n", op);
917 if (atomic_read(&tpg->lport_tpg_enabled))
920 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
922 if (!atomic_read(&tpg->lport_tpg_enabled))
925 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
927 init_completion(&tpg->tpg_base_comp);
928 schedule_work(&tpg->tpg_base_work);
929 wait_for_completion(&tpg->tpg_base_comp);
932 if (!atomic_read(&tpg->lport_tpg_enabled))
935 if (atomic_read(&tpg->lport_tpg_enabled))
941 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
944 return target_show_dynamic_sessions(to_tpg(item), page);
947 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
948 const char *page, size_t count)
950 struct se_portal_group *se_tpg = to_tpg(item);
951 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
952 struct tcm_qla2xxx_tpg, se_tpg);
954 int ret = kstrtoul(page, 0, &val);
957 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
960 if (val != 0 && val != 1 && val != 3) {
961 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
964 tpg->tpg_attrib.fabric_prot_type = val;
969 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
972 struct se_portal_group *se_tpg = to_tpg(item);
973 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
974 struct tcm_qla2xxx_tpg, se_tpg);
976 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
979 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
980 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
981 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
983 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
984 &tcm_qla2xxx_tpg_attr_enable,
985 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
986 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
990 static struct se_portal_group *tcm_qla2xxx_make_tpg(
992 struct config_group *group,
995 struct tcm_qla2xxx_lport *lport = container_of(wwn,
996 struct tcm_qla2xxx_lport, lport_wwn);
997 struct tcm_qla2xxx_tpg *tpg;
1001 if (strstr(name, "tpgt_") != name)
1002 return ERR_PTR(-EINVAL);
1003 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1004 return ERR_PTR(-EINVAL);
1007 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1008 return ERR_PTR(-ENOSYS);
1011 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1013 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1014 return ERR_PTR(-ENOMEM);
1017 tpg->lport_tpgt = tpgt;
1019 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1022 tpg->tpg_attrib.generate_node_acls = 1;
1023 tpg->tpg_attrib.demo_mode_write_protect = 1;
1024 tpg->tpg_attrib.cache_dynamic_acls = 1;
1025 tpg->tpg_attrib.demo_mode_login_only = 1;
1027 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1035 return &tpg->se_tpg;
1038 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1040 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1041 struct tcm_qla2xxx_tpg, se_tpg);
1042 struct tcm_qla2xxx_lport *lport = tpg->lport;
1043 struct scsi_qla_host *vha = lport->qla_vha;
1045 * Call into qla2x_target.c LLD logic to shutdown the active
1046 * FC Nexuses and disable target mode operation for this qla_hw_data
1048 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1049 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1051 core_tpg_deregister(se_tpg);
1053 * Clear local TPG=1 pointer for non NPIV mode.
1055 lport->tpg_1 = NULL;
1059 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1062 return tcm_qla2xxx_tpg_enable_show(item, page);
1065 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1066 const char *page, size_t count)
1068 struct se_portal_group *se_tpg = to_tpg(item);
1069 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1070 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1071 struct tcm_qla2xxx_lport, lport_wwn);
1072 struct scsi_qla_host *vha = lport->qla_vha;
1073 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1074 struct tcm_qla2xxx_tpg, se_tpg);
1078 rc = kstrtoul(page, 0, &op);
1080 pr_err("kstrtoul() returned %d\n", rc);
1083 if ((op != 1) && (op != 0)) {
1084 pr_err("Illegal value for tpg_enable: %lu\n", op);
1088 if (atomic_read(&tpg->lport_tpg_enabled))
1091 atomic_set(&tpg->lport_tpg_enabled, 1);
1092 qlt_enable_vha(vha);
1094 if (!atomic_read(&tpg->lport_tpg_enabled))
1097 atomic_set(&tpg->lport_tpg_enabled, 0);
1098 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1104 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1106 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1107 &tcm_qla2xxx_npiv_tpg_attr_enable,
1111 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1113 struct config_group *group,
1116 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1117 struct tcm_qla2xxx_lport, lport_wwn);
1118 struct tcm_qla2xxx_tpg *tpg;
1122 if (strstr(name, "tpgt_") != name)
1123 return ERR_PTR(-EINVAL);
1124 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1125 return ERR_PTR(-EINVAL);
1127 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1129 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1130 return ERR_PTR(-ENOMEM);
1133 tpg->lport_tpgt = tpgt;
1136 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1139 tpg->tpg_attrib.generate_node_acls = 1;
1140 tpg->tpg_attrib.demo_mode_write_protect = 1;
1141 tpg->tpg_attrib.cache_dynamic_acls = 1;
1142 tpg->tpg_attrib.demo_mode_login_only = 1;
1144 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1150 return &tpg->se_tpg;
1154 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1156 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1157 scsi_qla_host_t *vha,
1158 const uint8_t *s_id)
1160 struct tcm_qla2xxx_lport *lport;
1161 struct se_node_acl *se_nacl;
1162 struct tcm_qla2xxx_nacl *nacl;
1165 lport = vha->vha_tgt.target_lport_ptr;
1167 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1172 key = sid_to_key(s_id);
1173 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1175 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1177 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1180 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1181 se_nacl, se_nacl->initiatorname);
1183 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1184 if (!nacl->qla_tgt_sess) {
1185 pr_err("Unable to locate struct qla_tgt_sess\n");
1189 return nacl->qla_tgt_sess;
1193 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1195 static void tcm_qla2xxx_set_sess_by_s_id(
1196 struct tcm_qla2xxx_lport *lport,
1197 struct se_node_acl *new_se_nacl,
1198 struct tcm_qla2xxx_nacl *nacl,
1199 struct se_session *se_sess,
1200 struct qla_tgt_sess *qla_tgt_sess,
1207 key = sid_to_key(s_id);
1208 pr_debug("set_sess_by_s_id: %06x\n", key);
1210 slot = btree_lookup32(&lport->lport_fcport_map, key);
1213 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1214 nacl->nport_id = key;
1215 rc = btree_insert32(&lport->lport_fcport_map, key,
1216 new_se_nacl, GFP_ATOMIC);
1218 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1221 pr_debug("Wiping nonexisting fc_port entry\n");
1224 qla_tgt_sess->se_sess = se_sess;
1225 nacl->qla_tgt_sess = qla_tgt_sess;
1229 if (nacl->qla_tgt_sess) {
1230 if (new_se_nacl == NULL) {
1231 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1232 btree_remove32(&lport->lport_fcport_map, key);
1233 nacl->qla_tgt_sess = NULL;
1236 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1237 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1238 qla_tgt_sess->se_sess = se_sess;
1239 nacl->qla_tgt_sess = qla_tgt_sess;
1243 if (new_se_nacl == NULL) {
1244 pr_debug("Clearing existing fc_port entry\n");
1245 btree_remove32(&lport->lport_fcport_map, key);
1249 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1250 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1251 qla_tgt_sess->se_sess = se_sess;
1252 nacl->qla_tgt_sess = qla_tgt_sess;
1254 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1255 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1259 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1261 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1262 scsi_qla_host_t *vha,
1263 const uint16_t loop_id)
1265 struct tcm_qla2xxx_lport *lport;
1266 struct se_node_acl *se_nacl;
1267 struct tcm_qla2xxx_nacl *nacl;
1268 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1270 lport = vha->vha_tgt.target_lport_ptr;
1272 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1277 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1279 fc_loopid = lport->lport_loopid_map + loop_id;
1280 se_nacl = fc_loopid->se_nacl;
1282 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1287 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1289 if (!nacl->qla_tgt_sess) {
1290 pr_err("Unable to locate struct qla_tgt_sess\n");
1294 return nacl->qla_tgt_sess;
1298 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1300 static void tcm_qla2xxx_set_sess_by_loop_id(
1301 struct tcm_qla2xxx_lport *lport,
1302 struct se_node_acl *new_se_nacl,
1303 struct tcm_qla2xxx_nacl *nacl,
1304 struct se_session *se_sess,
1305 struct qla_tgt_sess *qla_tgt_sess,
1308 struct se_node_acl *saved_nacl;
1309 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1311 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1313 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1314 lport->lport_loopid_map)[loop_id];
1316 saved_nacl = fc_loopid->se_nacl;
1318 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1319 fc_loopid->se_nacl = new_se_nacl;
1320 if (qla_tgt_sess->se_sess != se_sess)
1321 qla_tgt_sess->se_sess = se_sess;
1322 if (nacl->qla_tgt_sess != qla_tgt_sess)
1323 nacl->qla_tgt_sess = qla_tgt_sess;
1327 if (nacl->qla_tgt_sess) {
1328 if (new_se_nacl == NULL) {
1329 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1330 fc_loopid->se_nacl = NULL;
1331 nacl->qla_tgt_sess = NULL;
1335 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1336 fc_loopid->se_nacl = new_se_nacl;
1337 if (qla_tgt_sess->se_sess != se_sess)
1338 qla_tgt_sess->se_sess = se_sess;
1339 if (nacl->qla_tgt_sess != qla_tgt_sess)
1340 nacl->qla_tgt_sess = qla_tgt_sess;
1344 if (new_se_nacl == NULL) {
1345 pr_debug("Clearing fc_loopid->se_nacl\n");
1346 fc_loopid->se_nacl = NULL;
1350 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1351 fc_loopid->se_nacl = new_se_nacl;
1352 if (qla_tgt_sess->se_sess != se_sess)
1353 qla_tgt_sess->se_sess = se_sess;
1354 if (nacl->qla_tgt_sess != qla_tgt_sess)
1355 nacl->qla_tgt_sess = qla_tgt_sess;
1357 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1358 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1362 * Should always be called with qla_hw_data->tgt.sess_lock held.
1364 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1365 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1367 struct se_session *se_sess = sess->se_sess;
1368 unsigned char be_sid[3];
1370 be_sid[0] = sess->s_id.b.domain;
1371 be_sid[1] = sess->s_id.b.area;
1372 be_sid[2] = sess->s_id.b.al_pa;
1374 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1376 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1377 sess, sess->loop_id);
1380 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1382 struct qla_tgt *tgt = sess->tgt;
1383 struct qla_hw_data *ha = tgt->ha;
1384 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1385 struct se_session *se_sess;
1386 struct tcm_qla2xxx_lport *lport;
1388 BUG_ON(in_interrupt());
1390 se_sess = sess->se_sess;
1392 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1397 lport = vha->vha_tgt.target_lport_ptr;
1399 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1403 target_wait_for_sess_cmds(se_sess);
1405 transport_deregister_session_configfs(sess->se_sess);
1406 transport_deregister_session(sess->se_sess);
1410 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1411 * to locate struct se_node_acl
1413 static int tcm_qla2xxx_check_initiator_node_acl(
1414 scsi_qla_host_t *vha,
1415 unsigned char *fc_wwpn,
1420 struct qla_hw_data *ha = vha->hw;
1421 struct tcm_qla2xxx_lport *lport;
1422 struct tcm_qla2xxx_tpg *tpg;
1423 struct tcm_qla2xxx_nacl *nacl;
1424 struct se_portal_group *se_tpg;
1425 struct se_node_acl *se_nacl;
1426 struct se_session *se_sess;
1427 struct qla_tgt_sess *sess = qla_tgt_sess;
1428 unsigned char port_name[36];
1429 unsigned long flags;
1430 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1431 TCM_QLA2XXX_DEFAULT_TAGS;
1433 lport = vha->vha_tgt.target_lport_ptr;
1435 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1440 * Locate the TPG=1 reference..
1444 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1447 se_tpg = &tpg->se_tpg;
1449 se_sess = transport_init_session_tags(num_tags,
1450 sizeof(struct qla_tgt_cmd),
1452 if (IS_ERR(se_sess)) {
1453 pr_err("Unable to initialize struct se_session\n");
1454 return PTR_ERR(se_sess);
1457 * Format the FCP Initiator port_name into colon seperated values to
1458 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1460 memset(&port_name, 0, 36);
1461 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1463 * Locate our struct se_node_acl either from an explict NodeACL created
1464 * via ConfigFS, or via running in TPG demo mode.
1466 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1468 if (!se_sess->se_node_acl) {
1469 transport_free_session(se_sess);
1472 se_nacl = se_sess->se_node_acl;
1473 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1475 * And now setup the new se_nacl and session pointers into our HW lport
1476 * mappings for fabric S_ID and LOOP_ID.
1478 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1479 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1480 qla_tgt_sess, s_id);
1481 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1482 qla_tgt_sess, loop_id);
1483 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1485 * Finally register the new FC Nexus with TCM
1487 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1492 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1493 uint16_t loop_id, bool conf_compl_supported)
1495 struct qla_tgt *tgt = sess->tgt;
1496 struct qla_hw_data *ha = tgt->ha;
1497 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1498 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1499 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1500 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1501 struct tcm_qla2xxx_nacl, se_node_acl);
1505 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1506 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1507 sess, sess->port_name,
1508 sess->loop_id, loop_id, sess->s_id.b.domain,
1509 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1510 s_id.b.area, s_id.b.al_pa);
1512 if (sess->loop_id != loop_id) {
1514 * Because we can shuffle loop IDs around and we
1515 * update different sessions non-atomically, we might
1516 * have overwritten this session's old loop ID
1517 * already, and we might end up overwriting some other
1518 * session that will be updated later. So we have to
1519 * be extra careful and we can't warn about those things...
1521 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1522 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1524 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1526 sess->loop_id = loop_id;
1529 if (sess->s_id.b24 != s_id.b24) {
1530 key = (((u32) sess->s_id.b.domain << 16) |
1531 ((u32) sess->s_id.b.area << 8) |
1532 ((u32) sess->s_id.b.al_pa));
1534 if (btree_lookup32(&lport->lport_fcport_map, key))
1535 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1536 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1537 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1539 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1540 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1542 key = (((u32) s_id.b.domain << 16) |
1543 ((u32) s_id.b.area << 8) |
1544 ((u32) s_id.b.al_pa));
1546 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1547 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1548 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1549 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1551 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1555 nacl->nport_id = key;
1558 sess->conf_compl_supported = conf_compl_supported;
1560 /* Reset logout parameters to default */
1561 sess->logout_on_delete = 1;
1562 sess->keep_nport_handle = 0;
1566 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1568 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1569 .handle_cmd = tcm_qla2xxx_handle_cmd,
1570 .handle_data = tcm_qla2xxx_handle_data,
1571 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1572 .handle_tmr = tcm_qla2xxx_handle_tmr,
1573 .free_cmd = tcm_qla2xxx_free_cmd,
1574 .free_mcmd = tcm_qla2xxx_free_mcmd,
1575 .free_session = tcm_qla2xxx_free_session,
1576 .update_sess = tcm_qla2xxx_update_sess,
1577 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1578 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1579 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1580 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1581 .put_sess = tcm_qla2xxx_put_sess,
1582 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1585 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1589 rc = btree_init32(&lport->lport_fcport_map);
1591 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1595 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1597 if (!lport->lport_loopid_map) {
1598 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1599 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1600 btree_destroy32(&lport->lport_fcport_map);
1603 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1605 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1606 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1610 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1611 void *target_lport_ptr,
1612 u64 npiv_wwpn, u64 npiv_wwnn)
1614 struct qla_hw_data *ha = vha->hw;
1615 struct tcm_qla2xxx_lport *lport =
1616 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1618 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1620 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1621 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1622 lport->qla_vha = vha;
1627 static struct se_wwn *tcm_qla2xxx_make_lport(
1628 struct target_fabric_configfs *tf,
1629 struct config_group *group,
1632 struct tcm_qla2xxx_lport *lport;
1636 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1637 return ERR_PTR(-EINVAL);
1639 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1641 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1642 return ERR_PTR(-ENOMEM);
1644 lport->lport_wwpn = wwpn;
1645 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1647 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1649 ret = tcm_qla2xxx_init_lport(lport);
1653 ret = qlt_lport_register(lport, wwpn, 0, 0,
1654 tcm_qla2xxx_lport_register_cb);
1658 return &lport->lport_wwn;
1660 vfree(lport->lport_loopid_map);
1661 btree_destroy32(&lport->lport_fcport_map);
1664 return ERR_PTR(ret);
1667 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1669 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1670 struct tcm_qla2xxx_lport, lport_wwn);
1671 struct scsi_qla_host *vha = lport->qla_vha;
1672 struct se_node_acl *node;
1676 * Call into qla2x_target.c LLD logic to complete the
1677 * shutdown of struct qla_tgt after the call to
1678 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1680 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1681 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1683 qlt_lport_deregister(vha);
1685 vfree(lport->lport_loopid_map);
1686 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1687 btree_remove32(&lport->lport_fcport_map, key);
1688 btree_destroy32(&lport->lport_fcport_map);
1692 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1693 void *target_lport_ptr,
1694 u64 npiv_wwpn, u64 npiv_wwnn)
1696 struct fc_vport *vport;
1697 struct Scsi_Host *sh = base_vha->host;
1698 struct scsi_qla_host *npiv_vha;
1699 struct tcm_qla2xxx_lport *lport =
1700 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1701 struct tcm_qla2xxx_lport *base_lport =
1702 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1703 struct fc_vport_identifiers vport_id;
1705 if (!qla_tgt_mode_enabled(base_vha)) {
1706 pr_err("qla2xxx base_vha not enabled for target mode\n");
1710 if (!base_lport || !base_lport->tpg_1 ||
1711 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1712 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1716 memset(&vport_id, 0, sizeof(vport_id));
1717 vport_id.port_name = npiv_wwpn;
1718 vport_id.node_name = npiv_wwnn;
1719 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1720 vport_id.vport_type = FC_PORTTYPE_NPIV;
1721 vport_id.disable = false;
1723 vport = fc_vport_create(sh, 0, &vport_id);
1725 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1729 * Setup local pointer to NPIV vhba + target_lport_ptr
1731 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1732 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1733 lport->qla_vha = npiv_vha;
1734 scsi_host_get(npiv_vha->host);
1739 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1740 struct target_fabric_configfs *tf,
1741 struct config_group *group,
1744 struct tcm_qla2xxx_lport *lport;
1745 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1749 snprintf(tmp, 128, "%s", name);
1751 p = strchr(tmp, '@');
1753 pr_err("Unable to locate NPIV '@' seperator\n");
1754 return ERR_PTR(-EINVAL);
1758 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1759 return ERR_PTR(-EINVAL);
1761 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1762 &npiv_wwpn, &npiv_wwnn) < 0)
1763 return ERR_PTR(-EINVAL);
1765 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1767 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1768 return ERR_PTR(-ENOMEM);
1770 lport->lport_npiv_wwpn = npiv_wwpn;
1771 lport->lport_npiv_wwnn = npiv_wwnn;
1772 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1774 ret = tcm_qla2xxx_init_lport(lport);
1778 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1779 tcm_qla2xxx_lport_register_npiv_cb);
1783 return &lport->lport_wwn;
1785 vfree(lport->lport_loopid_map);
1786 btree_destroy32(&lport->lport_fcport_map);
1789 return ERR_PTR(ret);
1792 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1794 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1795 struct tcm_qla2xxx_lport, lport_wwn);
1796 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1797 struct qla_hw_data *ha = npiv_vha->hw;
1798 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1800 scsi_host_put(npiv_vha->host);
1802 * Notify libfc that we want to release the vha->fc_vport
1804 fc_vport_terminate(npiv_vha->fc_vport);
1805 scsi_host_put(base_vha->host);
1810 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1813 return sprintf(page,
1814 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1815 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1816 utsname()->machine);
1819 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1821 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1822 &tcm_qla2xxx_wwn_attr_version,
1826 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1827 .module = THIS_MODULE,
1829 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1831 * XXX: Limit assumes single page per scatter-gather-list entry.
1832 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1834 .max_data_sg_nents = 1200,
1835 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1836 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1837 .tpg_get_tag = tcm_qla2xxx_get_tag,
1838 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1839 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1840 .tpg_check_demo_mode_write_protect =
1841 tcm_qla2xxx_check_demo_write_protect,
1842 .tpg_check_prod_mode_write_protect =
1843 tcm_qla2xxx_check_prod_write_protect,
1844 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1845 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1846 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1847 .check_stop_free = tcm_qla2xxx_check_stop_free,
1848 .release_cmd = tcm_qla2xxx_release_cmd,
1849 .shutdown_session = tcm_qla2xxx_shutdown_session,
1850 .close_session = tcm_qla2xxx_close_session,
1851 .sess_get_index = tcm_qla2xxx_sess_get_index,
1852 .sess_get_initiator_sid = NULL,
1853 .write_pending = tcm_qla2xxx_write_pending,
1854 .write_pending_status = tcm_qla2xxx_write_pending_status,
1855 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1856 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1857 .queue_data_in = tcm_qla2xxx_queue_data_in,
1858 .queue_status = tcm_qla2xxx_queue_status,
1859 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1860 .aborted_task = tcm_qla2xxx_aborted_task,
1862 * Setup function pointers for generic logic in
1863 * target_core_fabric_configfs.c
1865 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1866 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1867 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1868 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1869 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1871 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1872 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1873 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1876 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1877 .module = THIS_MODULE,
1878 .name = "qla2xxx_npiv",
1879 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1880 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1881 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1882 .tpg_get_tag = tcm_qla2xxx_get_tag,
1883 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1884 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1885 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1886 .tpg_check_prod_mode_write_protect =
1887 tcm_qla2xxx_check_prod_write_protect,
1888 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1889 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1890 .check_stop_free = tcm_qla2xxx_check_stop_free,
1891 .release_cmd = tcm_qla2xxx_release_cmd,
1892 .shutdown_session = tcm_qla2xxx_shutdown_session,
1893 .close_session = tcm_qla2xxx_close_session,
1894 .sess_get_index = tcm_qla2xxx_sess_get_index,
1895 .sess_get_initiator_sid = NULL,
1896 .write_pending = tcm_qla2xxx_write_pending,
1897 .write_pending_status = tcm_qla2xxx_write_pending_status,
1898 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1899 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1900 .queue_data_in = tcm_qla2xxx_queue_data_in,
1901 .queue_status = tcm_qla2xxx_queue_status,
1902 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1903 .aborted_task = tcm_qla2xxx_aborted_task,
1905 * Setup function pointers for generic logic in
1906 * target_core_fabric_configfs.c
1908 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1909 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1910 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1911 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1912 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1914 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1915 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1918 static int tcm_qla2xxx_register_configfs(void)
1922 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1923 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1924 utsname()->machine);
1926 ret = target_register_template(&tcm_qla2xxx_ops);
1930 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1934 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1936 if (!tcm_qla2xxx_free_wq) {
1938 goto out_fabric_npiv;
1941 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1942 if (!tcm_qla2xxx_cmd_wq) {
1950 destroy_workqueue(tcm_qla2xxx_free_wq);
1952 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1954 target_unregister_template(&tcm_qla2xxx_ops);
1958 static void tcm_qla2xxx_deregister_configfs(void)
1960 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1961 destroy_workqueue(tcm_qla2xxx_free_wq);
1963 target_unregister_template(&tcm_qla2xxx_ops);
1964 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1967 static int __init tcm_qla2xxx_init(void)
1971 ret = tcm_qla2xxx_register_configfs();
1978 static void __exit tcm_qla2xxx_exit(void)
1980 tcm_qla2xxx_deregister_configfs();
1983 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1984 MODULE_LICENSE("GPL");
1985 module_init(tcm_qla2xxx_init);
1986 module_exit(tcm_qla2xxx_exit);