1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
5 * (c) Copyright 2010-2013 Datera, Inc.
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
12 * Copyright (c) 2010 Cisco Systems, Inc
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/utsname.h>
29 #include <linux/vmalloc.h>
30 #include <linux/init.h>
31 #include <linux/list.h>
32 #include <linux/slab.h>
33 #include <linux/kthread.h>
34 #include <linux/types.h>
35 #include <linux/string.h>
36 #include <linux/configfs.h>
37 #include <linux/ctype.h>
38 #include <asm/unaligned.h>
39 #include <scsi/scsi.h>
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_fabric.h>
47 #include "qla_target.h"
48 #include "tcm_qla2xxx.h"
50 static struct workqueue_struct *tcm_qla2xxx_free_wq;
54 * If strict, we require lower-case hex and colon separators to be sure
55 * the name is the same as what would be generated by ft_format_wwn()
56 * so the name and wwn are mapped one-to-one.
58 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
68 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
70 if (c == '\n' && cp[1] == '\0')
72 if (strict && pos++ == 2 && byte++ < 7) {
81 if (strict && byte != 8)
88 else if (isxdigit(c) && (islower(c) || !strict))
89 nibble = tolower(c) - 'a' + 10;
92 *wwn = (*wwn << 4) | nibble;
96 pr_debug("err %u len %zu pos %u byte %u\n",
97 err, cp - name, pos, byte);
101 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
105 put_unaligned_be64(wwn, b);
106 return snprintf(buf, len,
107 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
108 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
111 static char *tcm_qla2xxx_get_fabric_name(void)
117 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
119 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
124 memset(wwn, 0, sizeof(wwn));
126 /* Validate and store the new name */
127 for (i = 0, j = 0; i < 16; i++) {
130 value = hex_to_bin(*ns++);
132 j = (j << 4) | value;
142 *nm = wwn_to_u64(wwn);
147 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
148 * store_fc_host_vport_create()
150 static int tcm_qla2xxx_npiv_parse_wwn(
156 unsigned int cnt = count;
162 /* count may include a LF at end of string */
163 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
166 /* validate we have enough characters for WWPN */
167 if ((cnt != (16+1+16)) || (name[16] != ':'))
170 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
181 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
183 return "qla2xxx_npiv";
186 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
189 struct tcm_qla2xxx_tpg, se_tpg);
190 struct tcm_qla2xxx_lport *lport = tpg->lport;
192 return lport->lport_naa_name;
195 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
197 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
198 struct tcm_qla2xxx_tpg, se_tpg);
199 return tpg->lport_tpgt;
202 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
205 struct tcm_qla2xxx_tpg, se_tpg);
207 return tpg->tpg_attrib.generate_node_acls;
210 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
213 struct tcm_qla2xxx_tpg, se_tpg);
215 return tpg->tpg_attrib.cache_dynamic_acls;
218 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
221 struct tcm_qla2xxx_tpg, se_tpg);
223 return tpg->tpg_attrib.demo_mode_write_protect;
226 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
229 struct tcm_qla2xxx_tpg, se_tpg);
231 return tpg->tpg_attrib.prod_mode_write_protect;
234 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
237 struct tcm_qla2xxx_tpg, se_tpg);
239 return tpg->tpg_attrib.demo_mode_login_only;
242 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
244 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
245 struct tcm_qla2xxx_tpg, se_tpg);
247 return tpg->tpg_attrib.fabric_prot_type;
250 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
252 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
253 struct tcm_qla2xxx_tpg, se_tpg);
255 return tpg->lport_tpgt;
258 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
260 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
261 struct qla_tgt_mgmt_cmd, free_work);
263 transport_generic_free_cmd(&mcmd->se_cmd, 0);
267 * Called from qla_target_template->free_mcmd(), and will call
268 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
269 * release callback. qla_hw_data->hardware_lock is expected to be held
271 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
273 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
274 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
277 static void tcm_qla2xxx_complete_free(struct work_struct *work)
279 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
283 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
285 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
286 cmd->trc_flags |= TRC_CMD_FREE;
287 transport_generic_free_cmd(&cmd->se_cmd, 0);
291 * Called from qla_target_template->free_cmd(), and will call
292 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
293 * release callback. qla_hw_data->hardware_lock is expected to be held
295 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
297 cmd->qpair->tgt_counters.core_qla_free_cmd++;
300 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
301 cmd->trc_flags |= TRC_CMD_DONE;
303 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
304 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
308 * Called from struct target_core_fabric_ops->check_stop_free() context
310 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
312 struct qla_tgt_cmd *cmd;
314 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
315 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
316 cmd->trc_flags |= TRC_CMD_CHK_STOP;
319 return target_put_sess_cmd(se_cmd);
322 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
323 * fabric descriptor @se_cmd command to release
325 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
327 struct qla_tgt_cmd *cmd;
329 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
330 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
331 struct qla_tgt_mgmt_cmd, se_cmd);
336 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
340 static void tcm_qla2xxx_release_session(struct kref *kref)
342 struct fc_port *sess = container_of(kref,
343 struct fc_port, sess_kref);
345 qlt_unreg_sess(sess);
348 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
353 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
354 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
357 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
359 struct fc_port *sess = se_sess->fabric_sess_ptr;
360 struct scsi_qla_host *vha;
366 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
367 target_sess_cmd_list_set_waiting(se_sess);
368 tcm_qla2xxx_put_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, kref_read(&cmd->se_cmd.cmd_kref),
390 cmd->se_cmd.transport_state,
392 cmd->se_cmd.se_cmd_flags);
395 cmd->trc_flags |= TRC_XFR_RDY;
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 fc_port *sess;
460 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
461 struct se_portal_group *se_tpg;
462 struct tcm_qla2xxx_tpg *tpg;
464 int flags = TARGET_SCF_ACK_KREF;
467 flags |= TARGET_SCF_BIDI_OP;
469 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
470 flags |= TARGET_SCF_USE_CPUID;
474 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
478 se_sess = sess->se_sess;
480 pr_err("Unable to locate active struct se_session\n");
484 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
485 se_tpg = se_sess->se_tpg;
486 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
487 if (unlikely(tpg->tpg_attrib.jam_host)) {
488 /* return, and dont run target_submit_cmd,discarding command */
493 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
494 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
495 cmd->unpacked_lun, data_length, fcp_task_attr,
499 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
501 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
504 * Ensure that the complete FCP WRITE payload has been received.
505 * Otherwise return an exception via CHECK_CONDITION status.
509 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
510 if (!cmd->write_data_transferred) {
512 * Check if se_cmd has already been aborted via LUN_RESET, and
513 * waiting upon completion in tcm_qla2xxx_write_pending_status()
515 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
516 complete(&cmd->se_cmd.t_transport_stop_comp);
520 switch (cmd->dif_err_code) {
523 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
527 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
531 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
538 if (cmd->se_cmd.pi_err)
539 transport_generic_request_failure(&cmd->se_cmd,
542 transport_generic_request_failure(&cmd->se_cmd,
543 TCM_CHECK_CONDITION_ABORT_CMD);
548 return target_execute_cmd(&cmd->se_cmd);
552 * Called from qla_target.c:qlt_do_ctio_completion()
554 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
556 cmd->trc_flags |= TRC_DATA_IN;
558 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
559 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
562 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
567 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
568 uint16_t *pfw_prot_opts)
570 struct se_cmd *se_cmd = &cmd->se_cmd;
572 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
573 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
575 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
576 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
582 * Called from qla_target.c:qlt_issue_task_mgmt()
584 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
585 uint16_t tmr_func, uint32_t tag)
587 struct fc_port *sess = mcmd->sess;
588 struct se_cmd *se_cmd = &mcmd->se_cmd;
589 int transl_tmr_func = 0;
590 int flags = TARGET_SCF_ACK_KREF;
594 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
595 transl_tmr_func = TMR_ABORT_TASK;
596 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
598 case QLA_TGT_2G_ABORT_TASK:
599 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
600 transl_tmr_func = TMR_ABORT_TASK;
602 case QLA_TGT_CLEAR_ACA:
603 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
604 transl_tmr_func = TMR_CLEAR_ACA;
606 case QLA_TGT_TARGET_RESET:
607 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
608 transl_tmr_func = TMR_TARGET_WARM_RESET;
610 case QLA_TGT_LUN_RESET:
611 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
612 transl_tmr_func = TMR_LUN_RESET;
614 case QLA_TGT_CLEAR_TS:
615 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
616 transl_tmr_func = TMR_CLEAR_TASK_SET;
618 case QLA_TGT_ABORT_TS:
619 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
620 transl_tmr_func = TMR_ABORT_TASK_SET;
623 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
624 sess->vha->host_no, tmr_func);
628 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
629 transl_tmr_func, GFP_ATOMIC, tag, flags);
632 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
635 struct qla_tgt_cmd *cmd = NULL;
636 struct se_cmd *secmd;
642 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
643 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
644 /* skip task management functions, including tmr->task_cmd */
645 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
648 if (secmd->tag == tag) {
649 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
653 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
658 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
660 struct qla_tgt_cmd *cmd = container_of(se_cmd,
661 struct qla_tgt_cmd, se_cmd);
664 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
665 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
666 * already kick start the free.
668 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
669 "transport_state %x, t_state %x, se_cmd_flags %x\n",
670 cmd, kref_read(&cmd->se_cmd.cmd_kref),
671 cmd->se_cmd.transport_state,
673 cmd->se_cmd.se_cmd_flags);
677 cmd->trc_flags |= TRC_XMIT_DATA;
678 cmd->bufflen = se_cmd->data_length;
679 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
681 cmd->sg_cnt = se_cmd->t_data_nents;
682 cmd->sg = se_cmd->t_data_sg;
685 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
686 cmd->prot_sg = se_cmd->t_prot_sg;
687 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
691 * Now queue completed DATA_IN the qla2xxx LLD and response ring
693 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
694 se_cmd->scsi_status);
697 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
699 struct qla_tgt_cmd *cmd = container_of(se_cmd,
700 struct qla_tgt_cmd, se_cmd);
701 int xmit_type = QLA_TGT_XMIT_STATUS;
705 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
706 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
707 * already kick start the free.
710 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
711 cmd, kref_read(&cmd->se_cmd.cmd_kref),
712 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
713 cmd->se_cmd.se_cmd_flags);
716 cmd->bufflen = se_cmd->data_length;
720 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
721 if (cmd->trc_flags & TRC_XMIT_STATUS) {
722 pr_crit("Multiple calls for status = %p.\n", cmd);
725 cmd->trc_flags |= TRC_XMIT_STATUS;
727 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
729 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
730 * for qla_tgt_xmit_response LLD code
732 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
733 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
734 se_cmd->residual_count = 0;
736 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
737 se_cmd->residual_count += se_cmd->data_length;
742 * Now queue status response to qla2xxx LLD code and response ring
744 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
747 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
749 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
750 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
751 struct qla_tgt_mgmt_cmd, se_cmd);
753 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
754 mcmd, se_tmr->function, se_tmr->response);
756 * Do translation between TCM TM response codes and
757 * QLA2xxx FC TM response codes.
759 switch (se_tmr->response) {
760 case TMR_FUNCTION_COMPLETE:
761 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
763 case TMR_TASK_DOES_NOT_EXIST:
764 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
766 case TMR_FUNCTION_REJECTED:
767 mcmd->fc_tm_rsp = FC_TM_REJECT;
769 case TMR_LUN_DOES_NOT_EXIST:
771 mcmd->fc_tm_rsp = FC_TM_FAILED;
775 * Queue the TM response to QLA2xxx LLD to build a
776 * CTIO response packet.
778 qlt_xmit_tm_rsp(mcmd);
781 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
783 struct qla_tgt_cmd *cmd = container_of(se_cmd,
784 struct qla_tgt_cmd, se_cmd);
786 if (qlt_abort_cmd(cmd))
790 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
791 struct tcm_qla2xxx_nacl *, struct fc_port *);
793 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
795 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
797 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
798 struct se_portal_group *se_tpg = se_nacl->se_tpg;
799 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
800 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
801 struct tcm_qla2xxx_lport, lport_wwn);
802 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
803 struct tcm_qla2xxx_nacl, se_node_acl);
806 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
808 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
809 if (WARN_ON(node && (node != se_nacl))) {
811 * The nacl no longer matches what we think it should be.
812 * Most likely a new dynamic acl has been added while
813 * someone dropped the hardware lock. It clearly is a
814 * bug elsewhere, but this bit can't make things worse.
816 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
820 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
821 se_nacl, nacl->nport_wwnn, nacl->nport_id);
823 * Now clear the se_nacl and session pointers from our HW lport lookup
824 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
826 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
827 * target_wait_for_sess_cmds() before the session waits for outstanding
828 * I/O to complete, to avoid a race between session shutdown execution
829 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
831 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
834 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
836 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
837 target_sess_cmd_list_set_waiting(sess->se_sess);
840 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
843 struct tcm_qla2xxx_nacl *nacl =
844 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
847 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
850 nacl->nport_wwnn = wwnn;
851 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
856 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
858 #define DEF_QLA_TPG_ATTRIB(name) \
860 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
861 struct config_item *item, char *page) \
863 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
864 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
865 struct tcm_qla2xxx_tpg, se_tpg); \
867 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
870 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
871 struct config_item *item, const char *page, size_t count) \
873 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
874 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
875 struct tcm_qla2xxx_tpg, se_tpg); \
876 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
880 ret = kstrtoul(page, 0, &val); \
882 pr_err("kstrtoul() failed with" \
883 " ret: %d\n", ret); \
887 if ((val != 0) && (val != 1)) { \
888 pr_err("Illegal boolean value %lu\n", val); \
896 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
898 DEF_QLA_TPG_ATTRIB(generate_node_acls);
899 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
900 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
901 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
902 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
903 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
904 DEF_QLA_TPG_ATTRIB(jam_host);
907 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
908 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
909 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
910 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
911 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
912 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
913 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
914 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
919 /* End items for tcm_qla2xxx_tpg_attrib_cit */
921 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
924 struct se_portal_group *se_tpg = to_tpg(item);
925 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
926 struct tcm_qla2xxx_tpg, se_tpg);
928 return snprintf(page, PAGE_SIZE, "%d\n",
929 atomic_read(&tpg->lport_tpg_enabled));
932 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
934 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
935 struct tcm_qla2xxx_tpg, tpg_base_work);
936 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
937 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
939 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
940 atomic_set(&base_tpg->lport_tpg_enabled, 1);
941 qlt_enable_vha(base_vha);
943 complete(&base_tpg->tpg_base_comp);
946 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
948 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
949 struct tcm_qla2xxx_tpg, tpg_base_work);
950 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
951 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
953 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
954 atomic_set(&base_tpg->lport_tpg_enabled, 0);
955 target_undepend_item(&se_tpg->tpg_group.cg_item);
957 complete(&base_tpg->tpg_base_comp);
960 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
961 const char *page, size_t count)
963 struct se_portal_group *se_tpg = to_tpg(item);
964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
965 struct tcm_qla2xxx_tpg, se_tpg);
969 rc = kstrtoul(page, 0, &op);
971 pr_err("kstrtoul() returned %d\n", rc);
974 if ((op != 1) && (op != 0)) {
975 pr_err("Illegal value for tpg_enable: %lu\n", op);
979 if (atomic_read(&tpg->lport_tpg_enabled))
982 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
984 if (!atomic_read(&tpg->lport_tpg_enabled))
987 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
989 init_completion(&tpg->tpg_base_comp);
990 schedule_work(&tpg->tpg_base_work);
991 wait_for_completion(&tpg->tpg_base_comp);
994 if (!atomic_read(&tpg->lport_tpg_enabled))
997 if (atomic_read(&tpg->lport_tpg_enabled))
1003 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
1006 return target_show_dynamic_sessions(to_tpg(item), page);
1009 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
1010 const char *page, size_t count)
1012 struct se_portal_group *se_tpg = to_tpg(item);
1013 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1014 struct tcm_qla2xxx_tpg, se_tpg);
1016 int ret = kstrtoul(page, 0, &val);
1019 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
1022 if (val != 0 && val != 1 && val != 3) {
1023 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
1026 tpg->tpg_attrib.fabric_prot_type = val;
1031 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
1034 struct se_portal_group *se_tpg = to_tpg(item);
1035 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1036 struct tcm_qla2xxx_tpg, se_tpg);
1038 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
1041 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
1042 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
1043 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
1045 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1046 &tcm_qla2xxx_tpg_attr_enable,
1047 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1048 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1052 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1054 struct config_group *group,
1057 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1058 struct tcm_qla2xxx_lport, lport_wwn);
1059 struct tcm_qla2xxx_tpg *tpg;
1063 if (strstr(name, "tpgt_") != name)
1064 return ERR_PTR(-EINVAL);
1065 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1066 return ERR_PTR(-EINVAL);
1069 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1070 return ERR_PTR(-ENOSYS);
1073 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1075 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1076 return ERR_PTR(-ENOMEM);
1079 tpg->lport_tpgt = tpgt;
1081 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1084 tpg->tpg_attrib.generate_node_acls = 1;
1085 tpg->tpg_attrib.demo_mode_write_protect = 1;
1086 tpg->tpg_attrib.cache_dynamic_acls = 1;
1087 tpg->tpg_attrib.demo_mode_login_only = 1;
1088 tpg->tpg_attrib.jam_host = 0;
1090 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1098 return &tpg->se_tpg;
1101 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1103 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1104 struct tcm_qla2xxx_tpg, se_tpg);
1105 struct tcm_qla2xxx_lport *lport = tpg->lport;
1106 struct scsi_qla_host *vha = lport->qla_vha;
1108 * Call into qla2x_target.c LLD logic to shutdown the active
1109 * FC Nexuses and disable target mode operation for this qla_hw_data
1111 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1112 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1114 core_tpg_deregister(se_tpg);
1116 * Clear local TPG=1 pointer for non NPIV mode.
1118 lport->tpg_1 = NULL;
1122 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1125 return tcm_qla2xxx_tpg_enable_show(item, page);
1128 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1129 const char *page, size_t count)
1131 struct se_portal_group *se_tpg = to_tpg(item);
1132 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1133 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1134 struct tcm_qla2xxx_lport, lport_wwn);
1135 struct scsi_qla_host *vha = lport->qla_vha;
1136 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1137 struct tcm_qla2xxx_tpg, se_tpg);
1141 rc = kstrtoul(page, 0, &op);
1143 pr_err("kstrtoul() returned %d\n", rc);
1146 if ((op != 1) && (op != 0)) {
1147 pr_err("Illegal value for tpg_enable: %lu\n", op);
1151 if (atomic_read(&tpg->lport_tpg_enabled))
1154 atomic_set(&tpg->lport_tpg_enabled, 1);
1155 qlt_enable_vha(vha);
1157 if (!atomic_read(&tpg->lport_tpg_enabled))
1160 atomic_set(&tpg->lport_tpg_enabled, 0);
1161 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1167 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1169 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1170 &tcm_qla2xxx_npiv_tpg_attr_enable,
1174 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1176 struct config_group *group,
1179 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1180 struct tcm_qla2xxx_lport, lport_wwn);
1181 struct tcm_qla2xxx_tpg *tpg;
1185 if (strstr(name, "tpgt_") != name)
1186 return ERR_PTR(-EINVAL);
1187 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1188 return ERR_PTR(-EINVAL);
1190 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1192 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1193 return ERR_PTR(-ENOMEM);
1196 tpg->lport_tpgt = tpgt;
1199 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1202 tpg->tpg_attrib.generate_node_acls = 1;
1203 tpg->tpg_attrib.demo_mode_write_protect = 1;
1204 tpg->tpg_attrib.cache_dynamic_acls = 1;
1205 tpg->tpg_attrib.demo_mode_login_only = 1;
1207 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1213 return &tpg->se_tpg;
1217 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1219 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(
1220 scsi_qla_host_t *vha,
1221 const uint8_t *s_id)
1223 struct tcm_qla2xxx_lport *lport;
1224 struct se_node_acl *se_nacl;
1225 struct tcm_qla2xxx_nacl *nacl;
1228 lport = vha->vha_tgt.target_lport_ptr;
1230 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1235 key = sid_to_key(s_id);
1236 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1238 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1240 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1243 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1244 se_nacl, se_nacl->initiatorname);
1246 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1247 if (!nacl->fc_port) {
1248 pr_err("Unable to locate struct fc_port\n");
1252 return nacl->fc_port;
1256 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1258 static void tcm_qla2xxx_set_sess_by_s_id(
1259 struct tcm_qla2xxx_lport *lport,
1260 struct se_node_acl *new_se_nacl,
1261 struct tcm_qla2xxx_nacl *nacl,
1262 struct se_session *se_sess,
1263 struct fc_port *fc_port,
1270 key = sid_to_key(s_id);
1271 pr_debug("set_sess_by_s_id: %06x\n", key);
1273 slot = btree_lookup32(&lport->lport_fcport_map, key);
1276 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1277 nacl->nport_id = key;
1278 rc = btree_insert32(&lport->lport_fcport_map, key,
1279 new_se_nacl, GFP_ATOMIC);
1281 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1284 pr_debug("Wiping nonexisting fc_port entry\n");
1287 fc_port->se_sess = se_sess;
1288 nacl->fc_port = fc_port;
1292 if (nacl->fc_port) {
1293 if (new_se_nacl == NULL) {
1294 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1295 btree_remove32(&lport->lport_fcport_map, key);
1296 nacl->fc_port = NULL;
1299 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1300 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1301 fc_port->se_sess = se_sess;
1302 nacl->fc_port = fc_port;
1306 if (new_se_nacl == NULL) {
1307 pr_debug("Clearing existing fc_port entry\n");
1308 btree_remove32(&lport->lport_fcport_map, key);
1312 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1313 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1314 fc_port->se_sess = se_sess;
1315 nacl->fc_port = fc_port;
1317 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1318 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1322 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1324 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1325 scsi_qla_host_t *vha,
1326 const uint16_t loop_id)
1328 struct tcm_qla2xxx_lport *lport;
1329 struct se_node_acl *se_nacl;
1330 struct tcm_qla2xxx_nacl *nacl;
1331 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1333 lport = vha->vha_tgt.target_lport_ptr;
1335 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1340 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1342 fc_loopid = lport->lport_loopid_map + loop_id;
1343 se_nacl = fc_loopid->se_nacl;
1345 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1350 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1352 if (!nacl->fc_port) {
1353 pr_err("Unable to locate struct fc_port\n");
1357 return nacl->fc_port;
1361 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1363 static void tcm_qla2xxx_set_sess_by_loop_id(
1364 struct tcm_qla2xxx_lport *lport,
1365 struct se_node_acl *new_se_nacl,
1366 struct tcm_qla2xxx_nacl *nacl,
1367 struct se_session *se_sess,
1368 struct fc_port *fc_port,
1371 struct se_node_acl *saved_nacl;
1372 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1374 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1376 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1377 lport->lport_loopid_map)[loop_id];
1379 saved_nacl = fc_loopid->se_nacl;
1381 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1382 fc_loopid->se_nacl = new_se_nacl;
1383 if (fc_port->se_sess != se_sess)
1384 fc_port->se_sess = se_sess;
1385 if (nacl->fc_port != fc_port)
1386 nacl->fc_port = fc_port;
1390 if (nacl->fc_port) {
1391 if (new_se_nacl == NULL) {
1392 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1393 fc_loopid->se_nacl = NULL;
1394 nacl->fc_port = NULL;
1398 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1399 fc_loopid->se_nacl = new_se_nacl;
1400 if (fc_port->se_sess != se_sess)
1401 fc_port->se_sess = se_sess;
1402 if (nacl->fc_port != fc_port)
1403 nacl->fc_port = fc_port;
1407 if (new_se_nacl == NULL) {
1408 pr_debug("Clearing fc_loopid->se_nacl\n");
1409 fc_loopid->se_nacl = NULL;
1413 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1414 fc_loopid->se_nacl = new_se_nacl;
1415 if (fc_port->se_sess != se_sess)
1416 fc_port->se_sess = se_sess;
1417 if (nacl->fc_port != fc_port)
1418 nacl->fc_port = fc_port;
1420 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1421 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1425 * Should always be called with qla_hw_data->tgt.sess_lock held.
1427 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1428 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1430 struct se_session *se_sess = sess->se_sess;
1431 unsigned char be_sid[3];
1433 be_sid[0] = sess->d_id.b.domain;
1434 be_sid[1] = sess->d_id.b.area;
1435 be_sid[2] = sess->d_id.b.al_pa;
1437 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1439 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1440 sess, sess->loop_id);
1443 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1445 struct qla_tgt *tgt = sess->tgt;
1446 struct qla_hw_data *ha = tgt->ha;
1447 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1448 struct se_session *se_sess;
1449 struct tcm_qla2xxx_lport *lport;
1451 BUG_ON(in_interrupt());
1453 se_sess = sess->se_sess;
1455 pr_err("struct fc_port->se_sess is NULL\n");
1460 lport = vha->vha_tgt.target_lport_ptr;
1462 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1466 target_wait_for_sess_cmds(se_sess);
1468 transport_deregister_session_configfs(sess->se_sess);
1469 transport_deregister_session(sess->se_sess);
1472 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1473 struct se_session *se_sess, void *p)
1475 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1476 struct tcm_qla2xxx_tpg, se_tpg);
1477 struct tcm_qla2xxx_lport *lport = tpg->lport;
1478 struct qla_hw_data *ha = lport->qla_vha->hw;
1479 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1480 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1481 struct tcm_qla2xxx_nacl, se_node_acl);
1482 struct fc_port *qlat_sess = p;
1483 uint16_t loop_id = qlat_sess->loop_id;
1484 unsigned long flags;
1485 unsigned char be_sid[3];
1487 be_sid[0] = qlat_sess->d_id.b.domain;
1488 be_sid[1] = qlat_sess->d_id.b.area;
1489 be_sid[2] = qlat_sess->d_id.b.al_pa;
1492 * And now setup se_nacl and session pointers into HW lport internal
1493 * mappings for fabric S_ID and LOOP_ID.
1495 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1496 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1497 se_sess, qlat_sess, be_sid);
1498 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1499 se_sess, qlat_sess, loop_id);
1500 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1506 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1507 * to locate struct se_node_acl
1509 static int tcm_qla2xxx_check_initiator_node_acl(
1510 scsi_qla_host_t *vha,
1511 unsigned char *fc_wwpn,
1512 struct fc_port *qlat_sess)
1514 struct qla_hw_data *ha = vha->hw;
1515 struct tcm_qla2xxx_lport *lport;
1516 struct tcm_qla2xxx_tpg *tpg;
1517 struct se_session *se_sess;
1518 unsigned char port_name[36];
1519 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1520 TCM_QLA2XXX_DEFAULT_TAGS;
1522 lport = vha->vha_tgt.target_lport_ptr;
1524 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1529 * Locate the TPG=1 reference..
1533 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1537 * Format the FCP Initiator port_name into colon seperated values to
1538 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1540 memset(&port_name, 0, 36);
1541 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1543 * Locate our struct se_node_acl either from an explict NodeACL created
1544 * via ConfigFS, or via running in TPG demo mode.
1546 se_sess = target_alloc_session(&tpg->se_tpg, num_tags,
1547 sizeof(struct qla_tgt_cmd),
1548 TARGET_PROT_ALL, port_name,
1549 qlat_sess, tcm_qla2xxx_session_cb);
1550 if (IS_ERR(se_sess))
1551 return PTR_ERR(se_sess);
1556 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1557 uint16_t loop_id, bool conf_compl_supported)
1559 struct qla_tgt *tgt = sess->tgt;
1560 struct qla_hw_data *ha = tgt->ha;
1561 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1562 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1563 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1564 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1565 struct tcm_qla2xxx_nacl, se_node_acl);
1569 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1570 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1571 sess, sess->port_name,
1572 sess->loop_id, loop_id, sess->d_id.b.domain,
1573 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1574 s_id.b.area, s_id.b.al_pa);
1576 if (sess->loop_id != loop_id) {
1578 * Because we can shuffle loop IDs around and we
1579 * update different sessions non-atomically, we might
1580 * have overwritten this session's old loop ID
1581 * already, and we might end up overwriting some other
1582 * session that will be updated later. So we have to
1583 * be extra careful and we can't warn about those things...
1585 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1586 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1588 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1590 sess->loop_id = loop_id;
1593 if (sess->d_id.b24 != s_id.b24) {
1594 key = (((u32) sess->d_id.b.domain << 16) |
1595 ((u32) sess->d_id.b.area << 8) |
1596 ((u32) sess->d_id.b.al_pa));
1598 if (btree_lookup32(&lport->lport_fcport_map, key))
1599 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1600 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1601 sess->d_id.b.domain, sess->d_id.b.area,
1602 sess->d_id.b.al_pa);
1604 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1605 sess->d_id.b.domain, sess->d_id.b.area,
1606 sess->d_id.b.al_pa);
1608 key = (((u32) s_id.b.domain << 16) |
1609 ((u32) s_id.b.area << 8) |
1610 ((u32) s_id.b.al_pa));
1612 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1613 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1614 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1615 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1617 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1622 nacl->nport_id = key;
1625 sess->conf_compl_supported = conf_compl_supported;
1627 /* Reset logout parameters to default */
1628 sess->logout_on_delete = 1;
1629 sess->keep_nport_handle = 0;
1633 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1635 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1636 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
1637 .handle_cmd = tcm_qla2xxx_handle_cmd,
1638 .handle_data = tcm_qla2xxx_handle_data,
1639 .handle_tmr = tcm_qla2xxx_handle_tmr,
1640 .free_cmd = tcm_qla2xxx_free_cmd,
1641 .free_mcmd = tcm_qla2xxx_free_mcmd,
1642 .free_session = tcm_qla2xxx_free_session,
1643 .update_sess = tcm_qla2xxx_update_sess,
1644 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1645 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1646 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1647 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1648 .put_sess = tcm_qla2xxx_put_sess,
1649 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1650 .get_dif_tags = tcm_qla2xxx_dif_tags,
1651 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1654 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1658 rc = btree_init32(&lport->lport_fcport_map);
1660 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1664 lport->lport_loopid_map =
1665 vzalloc(array_size(65536,
1666 sizeof(struct tcm_qla2xxx_fc_loopid)));
1667 if (!lport->lport_loopid_map) {
1668 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1669 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1670 btree_destroy32(&lport->lport_fcport_map);
1673 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1674 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1678 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1679 void *target_lport_ptr,
1680 u64 npiv_wwpn, u64 npiv_wwnn)
1682 struct qla_hw_data *ha = vha->hw;
1683 struct tcm_qla2xxx_lport *lport =
1684 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1686 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1688 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1689 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1690 lport->qla_vha = vha;
1695 static struct se_wwn *tcm_qla2xxx_make_lport(
1696 struct target_fabric_configfs *tf,
1697 struct config_group *group,
1700 struct tcm_qla2xxx_lport *lport;
1704 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1705 return ERR_PTR(-EINVAL);
1707 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1709 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1710 return ERR_PTR(-ENOMEM);
1712 lport->lport_wwpn = wwpn;
1713 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1715 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1717 ret = tcm_qla2xxx_init_lport(lport);
1721 ret = qlt_lport_register(lport, wwpn, 0, 0,
1722 tcm_qla2xxx_lport_register_cb);
1726 return &lport->lport_wwn;
1728 vfree(lport->lport_loopid_map);
1729 btree_destroy32(&lport->lport_fcport_map);
1732 return ERR_PTR(ret);
1735 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1737 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1738 struct tcm_qla2xxx_lport, lport_wwn);
1739 struct scsi_qla_host *vha = lport->qla_vha;
1740 struct se_node_acl *node;
1744 * Call into qla2x_target.c LLD logic to complete the
1745 * shutdown of struct qla_tgt after the call to
1746 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1748 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1749 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1751 qlt_lport_deregister(vha);
1753 vfree(lport->lport_loopid_map);
1754 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1755 btree_remove32(&lport->lport_fcport_map, key);
1756 btree_destroy32(&lport->lport_fcport_map);
1760 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1761 void *target_lport_ptr,
1762 u64 npiv_wwpn, u64 npiv_wwnn)
1764 struct fc_vport *vport;
1765 struct Scsi_Host *sh = base_vha->host;
1766 struct scsi_qla_host *npiv_vha;
1767 struct tcm_qla2xxx_lport *lport =
1768 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1769 struct tcm_qla2xxx_lport *base_lport =
1770 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1771 struct fc_vport_identifiers vport_id;
1773 if (qla_ini_mode_enabled(base_vha)) {
1774 pr_err("qla2xxx base_vha not enabled for target mode\n");
1778 if (!base_lport || !base_lport->tpg_1 ||
1779 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1780 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1784 memset(&vport_id, 0, sizeof(vport_id));
1785 vport_id.port_name = npiv_wwpn;
1786 vport_id.node_name = npiv_wwnn;
1787 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1788 vport_id.vport_type = FC_PORTTYPE_NPIV;
1789 vport_id.disable = false;
1791 vport = fc_vport_create(sh, 0, &vport_id);
1793 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1797 * Setup local pointer to NPIV vhba + target_lport_ptr
1799 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1800 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1801 lport->qla_vha = npiv_vha;
1802 scsi_host_get(npiv_vha->host);
1807 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1808 struct target_fabric_configfs *tf,
1809 struct config_group *group,
1812 struct tcm_qla2xxx_lport *lport;
1813 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1817 snprintf(tmp, 128, "%s", name);
1819 p = strchr(tmp, '@');
1821 pr_err("Unable to locate NPIV '@' separator\n");
1822 return ERR_PTR(-EINVAL);
1826 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1827 return ERR_PTR(-EINVAL);
1829 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1830 &npiv_wwpn, &npiv_wwnn) < 0)
1831 return ERR_PTR(-EINVAL);
1833 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1835 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1836 return ERR_PTR(-ENOMEM);
1838 lport->lport_npiv_wwpn = npiv_wwpn;
1839 lport->lport_npiv_wwnn = npiv_wwnn;
1840 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1842 ret = tcm_qla2xxx_init_lport(lport);
1846 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1847 tcm_qla2xxx_lport_register_npiv_cb);
1851 return &lport->lport_wwn;
1853 vfree(lport->lport_loopid_map);
1854 btree_destroy32(&lport->lport_fcport_map);
1857 return ERR_PTR(ret);
1860 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1862 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1863 struct tcm_qla2xxx_lport, lport_wwn);
1864 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1865 struct qla_hw_data *ha = npiv_vha->hw;
1866 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1868 scsi_host_put(npiv_vha->host);
1870 * Notify libfc that we want to release the vha->fc_vport
1872 fc_vport_terminate(npiv_vha->fc_vport);
1873 scsi_host_put(base_vha->host);
1878 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1881 return sprintf(page,
1882 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1883 QLA2XXX_VERSION, utsname()->sysname,
1884 utsname()->machine, utsname()->release);
1887 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1889 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1890 &tcm_qla2xxx_wwn_attr_version,
1894 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1895 .module = THIS_MODULE,
1897 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1899 * XXX: Limit assumes single page per scatter-gather-list entry.
1900 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1902 .max_data_sg_nents = 1200,
1903 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1904 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1905 .tpg_get_tag = tcm_qla2xxx_get_tag,
1906 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1907 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1908 .tpg_check_demo_mode_write_protect =
1909 tcm_qla2xxx_check_demo_write_protect,
1910 .tpg_check_prod_mode_write_protect =
1911 tcm_qla2xxx_check_prod_write_protect,
1912 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1913 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1914 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1915 .check_stop_free = tcm_qla2xxx_check_stop_free,
1916 .release_cmd = tcm_qla2xxx_release_cmd,
1917 .close_session = tcm_qla2xxx_close_session,
1918 .sess_get_index = tcm_qla2xxx_sess_get_index,
1919 .sess_get_initiator_sid = NULL,
1920 .write_pending = tcm_qla2xxx_write_pending,
1921 .write_pending_status = tcm_qla2xxx_write_pending_status,
1922 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1923 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1924 .queue_data_in = tcm_qla2xxx_queue_data_in,
1925 .queue_status = tcm_qla2xxx_queue_status,
1926 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1927 .aborted_task = tcm_qla2xxx_aborted_task,
1929 * Setup function pointers for generic logic in
1930 * target_core_fabric_configfs.c
1932 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1933 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1934 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1935 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1936 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1938 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1939 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1940 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1943 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1944 .module = THIS_MODULE,
1945 .name = "qla2xxx_npiv",
1946 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1947 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1948 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1949 .tpg_get_tag = tcm_qla2xxx_get_tag,
1950 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1951 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1952 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1953 .tpg_check_prod_mode_write_protect =
1954 tcm_qla2xxx_check_prod_write_protect,
1955 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1956 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1957 .check_stop_free = tcm_qla2xxx_check_stop_free,
1958 .release_cmd = tcm_qla2xxx_release_cmd,
1959 .close_session = tcm_qla2xxx_close_session,
1960 .sess_get_index = tcm_qla2xxx_sess_get_index,
1961 .sess_get_initiator_sid = NULL,
1962 .write_pending = tcm_qla2xxx_write_pending,
1963 .write_pending_status = tcm_qla2xxx_write_pending_status,
1964 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1965 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1966 .queue_data_in = tcm_qla2xxx_queue_data_in,
1967 .queue_status = tcm_qla2xxx_queue_status,
1968 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1969 .aborted_task = tcm_qla2xxx_aborted_task,
1971 * Setup function pointers for generic logic in
1972 * target_core_fabric_configfs.c
1974 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1975 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1976 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1977 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1978 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1980 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1981 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1984 static int tcm_qla2xxx_register_configfs(void)
1988 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1989 QLA2XXX_VERSION, utsname()->sysname,
1990 utsname()->machine, utsname()->release);
1992 ret = target_register_template(&tcm_qla2xxx_ops);
1996 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
2000 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2002 if (!tcm_qla2xxx_free_wq) {
2004 goto out_fabric_npiv;
2010 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2012 target_unregister_template(&tcm_qla2xxx_ops);
2016 static void tcm_qla2xxx_deregister_configfs(void)
2018 destroy_workqueue(tcm_qla2xxx_free_wq);
2020 target_unregister_template(&tcm_qla2xxx_ops);
2021 target_unregister_template(&tcm_qla2xxx_npiv_ops);
2024 static int __init tcm_qla2xxx_init(void)
2028 ret = tcm_qla2xxx_register_configfs();
2035 static void __exit tcm_qla2xxx_exit(void)
2037 tcm_qla2xxx_deregister_configfs();
2040 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
2041 MODULE_LICENSE("GPL");
2042 module_init(tcm_qla2xxx_init);
2043 module_exit(tcm_qla2xxx_exit);