1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3 * This file contains tcm implementation using v4 configfs fabric infrastructure
4 * for QLogic target mode HBAs
6 * (c) Copyright 2010-2013 Datera, Inc.
8 * Author: Nicholas A. Bellinger <nab@daterainc.com>
10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
11 * the TCM_FC / Open-FCoE.org fabric module.
13 * Copyright (c) 2010 Cisco Systems, Inc
15 ****************************************************************************/
18 #include <linux/module.h>
19 #include <linux/utsname.h>
20 #include <linux/vmalloc.h>
21 #include <linux/list.h>
22 #include <linux/slab.h>
23 #include <linux/types.h>
24 #include <linux/string.h>
25 #include <linux/configfs.h>
26 #include <linux/ctype.h>
27 #include <asm/unaligned.h>
28 #include <scsi/scsi_host.h>
29 #include <target/target_core_base.h>
30 #include <target/target_core_fabric.h>
33 #include "qla_target.h"
34 #include "tcm_qla2xxx.h"
36 static struct workqueue_struct *tcm_qla2xxx_free_wq;
40 * If strict, we require lower-case hex and colon separators to be sure
41 * the name is the same as what would be generated by ft_format_wwn()
42 * so the name and wwn are mapped one-to-one.
44 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
56 if (c == '\n' && cp[1] == '\0')
58 if (strict && pos++ == 2 && byte++ < 7) {
67 if (strict && byte != 8)
74 else if (isxdigit(c) && (islower(c) || !strict))
75 nibble = tolower(c) - 'a' + 10;
78 *wwn = (*wwn << 4) | nibble;
82 pr_debug("err %u len %zu pos %u byte %u\n",
83 err, cp - name, pos, byte);
87 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
91 put_unaligned_be64(wwn, b);
92 return snprintf(buf, len,
93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
100 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
105 memset(wwn, 0, sizeof(wwn));
107 /* Validate and store the new name */
108 for (i = 0, j = 0; i < 16; i++) {
111 value = hex_to_bin(*ns++);
113 j = (j << 4) | value;
123 *nm = wwn_to_u64(wwn);
128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
129 * store_fc_host_vport_create()
131 static int tcm_qla2xxx_npiv_parse_wwn(
137 unsigned int cnt = count;
143 /* count may include a LF at end of string */
144 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
147 /* validate we have enough characters for WWPN */
148 if ((cnt != (16+1+16)) || (name[16] != ':'))
151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
162 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
165 struct tcm_qla2xxx_tpg, se_tpg);
166 struct tcm_qla2xxx_lport *lport = tpg->lport;
168 return lport->lport_naa_name;
171 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
174 struct tcm_qla2xxx_tpg, se_tpg);
175 return tpg->lport_tpgt;
178 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
181 struct tcm_qla2xxx_tpg, se_tpg);
183 return tpg->tpg_attrib.generate_node_acls;
186 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
189 struct tcm_qla2xxx_tpg, se_tpg);
191 return tpg->tpg_attrib.cache_dynamic_acls;
194 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
197 struct tcm_qla2xxx_tpg, se_tpg);
199 return tpg->tpg_attrib.demo_mode_write_protect;
202 static int tcm_qla2xxx_check_prod_write_protect(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.prod_mode_write_protect;
210 static int tcm_qla2xxx_check_demo_mode_login_only(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.demo_mode_login_only;
218 static int tcm_qla2xxx_check_prot_fabric_only(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.fabric_prot_type;
226 static u32 tcm_qla2xxx_tpg_get_inst_index(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->lport_tpgt;
234 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
237 struct qla_tgt_mgmt_cmd, free_work);
239 transport_generic_free_cmd(&mcmd->se_cmd, 0);
243 * Called from qla_target_template->free_mcmd(), and will call
244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
245 * release callback. qla_hw_data->hardware_lock is expected to be held
247 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
251 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
252 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
255 static void tcm_qla2xxx_complete_free(struct work_struct *work)
257 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
261 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
263 /* To do: protect all tgt_counters manipulations with proper locking. */
264 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
265 cmd->trc_flags |= TRC_CMD_FREE;
266 cmd->cmd_sent_to_fw = 0;
268 transport_generic_free_cmd(&cmd->se_cmd, 0);
272 * Called from qla_target_template->free_cmd(), and will call
273 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
274 * release callback. qla_hw_data->hardware_lock is expected to be held
276 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
278 cmd->qpair->tgt_counters.core_qla_free_cmd++;
281 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
282 cmd->trc_flags |= TRC_CMD_DONE;
284 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
285 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
289 * Called from struct target_core_fabric_ops->check_stop_free() context
291 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
293 struct qla_tgt_cmd *cmd;
295 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
296 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
297 cmd->trc_flags |= TRC_CMD_CHK_STOP;
300 return target_put_sess_cmd(se_cmd);
303 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
304 * fabric descriptor @se_cmd command to release
306 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
308 struct qla_tgt_cmd *cmd;
310 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
311 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
312 struct qla_tgt_mgmt_cmd, se_cmd);
316 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
318 if (WARN_ON(cmd->cmd_sent_to_fw))
324 static void tcm_qla2xxx_release_session(struct kref *kref)
326 struct fc_port *sess = container_of(kref,
327 struct fc_port, sess_kref);
329 qlt_unreg_sess(sess);
332 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
337 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
340 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
342 struct fc_port *sess = se_sess->fabric_sess_ptr;
343 struct scsi_qla_host *vha;
349 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
350 target_sess_cmd_list_set_waiting(se_sess);
351 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
353 sess->explicit_logout = 1;
354 tcm_qla2xxx_put_sess(sess);
357 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
362 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
364 struct qla_tgt_cmd *cmd = container_of(se_cmd,
365 struct qla_tgt_cmd, se_cmd);
368 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
369 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
370 * already kick start the free.
372 pr_debug("write_pending aborted cmd[%p] refcount %d "
373 "transport_state %x, t_state %x, se_cmd_flags %x\n",
374 cmd, kref_read(&cmd->se_cmd.cmd_kref),
375 cmd->se_cmd.transport_state,
377 cmd->se_cmd.se_cmd_flags);
378 transport_generic_request_failure(&cmd->se_cmd,
379 TCM_CHECK_CONDITION_ABORT_CMD);
382 cmd->trc_flags |= TRC_XFR_RDY;
383 cmd->bufflen = se_cmd->data_length;
384 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
386 cmd->sg_cnt = se_cmd->t_data_nents;
387 cmd->sg = se_cmd->t_data_sg;
389 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
390 cmd->prot_sg = se_cmd->t_prot_sg;
391 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
395 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
396 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
398 return qlt_rdy_to_xfer(cmd);
401 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
406 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
408 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
409 struct qla_tgt_cmd *cmd = container_of(se_cmd,
410 struct qla_tgt_cmd, se_cmd);
418 * Called from process context in qla_target.c:qlt_do_work() code
420 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
421 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
422 int data_dir, int bidi)
424 struct se_cmd *se_cmd = &cmd->se_cmd;
425 struct se_session *se_sess;
426 struct fc_port *sess;
427 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
428 struct se_portal_group *se_tpg;
429 struct tcm_qla2xxx_tpg *tpg;
431 int flags = TARGET_SCF_ACK_KREF;
434 flags |= TARGET_SCF_BIDI_OP;
436 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
437 flags |= TARGET_SCF_USE_CPUID;
441 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
445 se_sess = sess->se_sess;
447 pr_err("Unable to locate active struct se_session\n");
451 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
452 se_tpg = se_sess->se_tpg;
453 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
454 if (unlikely(tpg->tpg_attrib.jam_host)) {
455 /* return, and dont run target_submit_cmd,discarding command */
460 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
461 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
462 cmd->unpacked_lun, data_length, fcp_task_attr,
466 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
468 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
471 * Ensure that the complete FCP WRITE payload has been received.
472 * Otherwise return an exception via CHECK_CONDITION status.
475 cmd->cmd_sent_to_fw = 0;
477 transport_generic_request_failure(&cmd->se_cmd,
478 TCM_CHECK_CONDITION_ABORT_CMD);
482 cmd->qpair->tgt_counters.qla_core_ret_ctio++;
483 if (!cmd->write_data_transferred) {
484 switch (cmd->dif_err_code) {
487 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
491 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
495 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
502 if (cmd->se_cmd.pi_err)
503 transport_generic_request_failure(&cmd->se_cmd,
506 transport_generic_request_failure(&cmd->se_cmd,
507 TCM_CHECK_CONDITION_ABORT_CMD);
512 return target_execute_cmd(&cmd->se_cmd);
516 * Called from qla_target.c:qlt_do_ctio_completion()
518 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
520 cmd->trc_flags |= TRC_DATA_IN;
522 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
523 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
526 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
531 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
532 uint16_t *pfw_prot_opts)
534 struct se_cmd *se_cmd = &cmd->se_cmd;
536 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
537 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
539 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
540 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
546 * Called from qla_target.c:qlt_issue_task_mgmt()
548 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
549 uint16_t tmr_func, uint32_t tag)
551 struct fc_port *sess = mcmd->sess;
552 struct se_cmd *se_cmd = &mcmd->se_cmd;
553 int transl_tmr_func = 0;
554 int flags = TARGET_SCF_ACK_KREF;
558 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
559 transl_tmr_func = TMR_ABORT_TASK;
560 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
562 case QLA_TGT_2G_ABORT_TASK:
563 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
564 transl_tmr_func = TMR_ABORT_TASK;
566 case QLA_TGT_CLEAR_ACA:
567 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
568 transl_tmr_func = TMR_CLEAR_ACA;
570 case QLA_TGT_TARGET_RESET:
571 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
572 transl_tmr_func = TMR_TARGET_WARM_RESET;
574 case QLA_TGT_LUN_RESET:
575 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
576 transl_tmr_func = TMR_LUN_RESET;
578 case QLA_TGT_CLEAR_TS:
579 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
580 transl_tmr_func = TMR_CLEAR_TASK_SET;
582 case QLA_TGT_ABORT_TS:
583 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
584 transl_tmr_func = TMR_ABORT_TASK_SET;
587 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
588 sess->vha->host_no, tmr_func);
592 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
593 transl_tmr_func, GFP_ATOMIC, tag, flags);
596 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
599 struct qla_tgt_cmd *cmd = NULL;
600 struct se_cmd *secmd;
606 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
607 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
608 /* skip task management functions, including tmr->task_cmd */
609 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
612 if (secmd->tag == tag) {
613 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
617 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
622 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
624 struct qla_tgt_cmd *cmd = container_of(se_cmd,
625 struct qla_tgt_cmd, se_cmd);
626 struct scsi_qla_host *vha = cmd->vha;
629 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
630 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
631 * already kick start the free.
633 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
634 "transport_state %x, t_state %x, se_cmd_flags %x\n",
635 cmd, kref_read(&cmd->se_cmd.cmd_kref),
636 cmd->se_cmd.transport_state,
638 cmd->se_cmd.se_cmd_flags);
639 vha->hw->tgt.tgt_ops->free_cmd(cmd);
643 cmd->trc_flags |= TRC_XMIT_DATA;
644 cmd->bufflen = se_cmd->data_length;
645 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
647 cmd->sg_cnt = se_cmd->t_data_nents;
648 cmd->sg = se_cmd->t_data_sg;
651 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
652 cmd->prot_sg = se_cmd->t_prot_sg;
653 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
657 * Now queue completed DATA_IN the qla2xxx LLD and response ring
659 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
660 se_cmd->scsi_status);
663 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
665 struct qla_tgt_cmd *cmd = container_of(se_cmd,
666 struct qla_tgt_cmd, se_cmd);
667 struct scsi_qla_host *vha = cmd->vha;
668 int xmit_type = QLA_TGT_XMIT_STATUS;
672 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
673 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
674 * already kick start the free.
677 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
678 cmd, kref_read(&cmd->se_cmd.cmd_kref),
679 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
680 cmd->se_cmd.se_cmd_flags);
681 vha->hw->tgt.tgt_ops->free_cmd(cmd);
684 cmd->bufflen = se_cmd->data_length;
688 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
689 cmd->trc_flags |= TRC_XMIT_STATUS;
691 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
693 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
694 * for qla_tgt_xmit_response LLD code
696 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
697 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
698 se_cmd->residual_count = 0;
700 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
701 se_cmd->residual_count += se_cmd->data_length;
706 * Now queue status response to qla2xxx LLD code and response ring
708 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
711 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
713 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
714 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
715 struct qla_tgt_mgmt_cmd, se_cmd);
717 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
718 mcmd, se_tmr->function, se_tmr->response);
720 * Do translation between TCM TM response codes and
721 * QLA2xxx FC TM response codes.
723 switch (se_tmr->response) {
724 case TMR_FUNCTION_COMPLETE:
725 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
727 case TMR_TASK_DOES_NOT_EXIST:
728 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
730 case TMR_FUNCTION_REJECTED:
731 mcmd->fc_tm_rsp = FC_TM_REJECT;
733 case TMR_LUN_DOES_NOT_EXIST:
735 mcmd->fc_tm_rsp = FC_TM_FAILED;
739 * Queue the TM response to QLA2xxx LLD to build a
740 * CTIO response packet.
742 qlt_xmit_tm_rsp(mcmd);
745 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
747 struct qla_tgt_cmd *cmd = container_of(se_cmd,
748 struct qla_tgt_cmd, se_cmd);
750 if (qlt_abort_cmd(cmd))
754 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
755 struct tcm_qla2xxx_nacl *, struct fc_port *);
757 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
759 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
761 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
762 struct se_portal_group *se_tpg = se_nacl->se_tpg;
763 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
764 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
765 struct tcm_qla2xxx_lport, lport_wwn);
766 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
767 struct tcm_qla2xxx_nacl, se_node_acl);
770 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
772 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
773 if (WARN_ON(node && (node != se_nacl))) {
775 * The nacl no longer matches what we think it should be.
776 * Most likely a new dynamic acl has been added while
777 * someone dropped the hardware lock. It clearly is a
778 * bug elsewhere, but this bit can't make things worse.
780 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
784 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
785 se_nacl, nacl->nport_wwnn, nacl->nport_id);
787 * Now clear the se_nacl and session pointers from our HW lport lookup
788 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
790 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
791 * target_wait_for_sess_cmds() before the session waits for outstanding
792 * I/O to complete, to avoid a race between session shutdown execution
793 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
795 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
798 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
800 target_sess_cmd_list_set_waiting(sess->se_sess);
803 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
806 struct tcm_qla2xxx_nacl *nacl =
807 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
810 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
813 nacl->nport_wwnn = wwnn;
814 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
819 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
821 #define DEF_QLA_TPG_ATTRIB(name) \
823 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
824 struct config_item *item, char *page) \
826 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
827 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
828 struct tcm_qla2xxx_tpg, se_tpg); \
830 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
833 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
834 struct config_item *item, const char *page, size_t count) \
836 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
837 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
838 struct tcm_qla2xxx_tpg, se_tpg); \
839 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
843 ret = kstrtoul(page, 0, &val); \
845 pr_err("kstrtoul() failed with" \
846 " ret: %d\n", ret); \
850 if ((val != 0) && (val != 1)) { \
851 pr_err("Illegal boolean value %lu\n", val); \
859 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
861 DEF_QLA_TPG_ATTRIB(generate_node_acls);
862 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
863 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
864 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
865 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
866 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
867 DEF_QLA_TPG_ATTRIB(jam_host);
870 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
871 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
872 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
873 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
874 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
875 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
876 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
877 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
882 /* End items for tcm_qla2xxx_tpg_attrib_cit */
884 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
887 struct se_portal_group *se_tpg = to_tpg(item);
888 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
889 struct tcm_qla2xxx_tpg, se_tpg);
891 return snprintf(page, PAGE_SIZE, "%d\n",
892 atomic_read(&tpg->lport_tpg_enabled));
895 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
896 const char *page, size_t count)
898 struct se_portal_group *se_tpg = to_tpg(item);
899 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
900 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
901 struct tcm_qla2xxx_lport, lport_wwn);
902 struct scsi_qla_host *vha = lport->qla_vha;
903 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
904 struct tcm_qla2xxx_tpg, se_tpg);
908 rc = kstrtoul(page, 0, &op);
910 pr_err("kstrtoul() returned %d\n", rc);
913 if ((op != 1) && (op != 0)) {
914 pr_err("Illegal value for tpg_enable: %lu\n", op);
918 if (atomic_read(&tpg->lport_tpg_enabled))
921 atomic_set(&tpg->lport_tpg_enabled, 1);
924 if (!atomic_read(&tpg->lport_tpg_enabled))
927 atomic_set(&tpg->lport_tpg_enabled, 0);
928 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
934 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
937 return target_show_dynamic_sessions(to_tpg(item), page);
940 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
941 const char *page, size_t count)
943 struct se_portal_group *se_tpg = to_tpg(item);
944 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
945 struct tcm_qla2xxx_tpg, se_tpg);
947 int ret = kstrtoul(page, 0, &val);
950 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
953 if (val != 0 && val != 1 && val != 3) {
954 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
957 tpg->tpg_attrib.fabric_prot_type = val;
962 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
965 struct se_portal_group *se_tpg = to_tpg(item);
966 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
967 struct tcm_qla2xxx_tpg, se_tpg);
969 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
972 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
973 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
974 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
976 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
977 &tcm_qla2xxx_tpg_attr_enable,
978 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
979 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
983 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
986 struct tcm_qla2xxx_lport *lport = container_of(wwn,
987 struct tcm_qla2xxx_lport, lport_wwn);
988 struct tcm_qla2xxx_tpg *tpg;
992 if (strstr(name, "tpgt_") != name)
993 return ERR_PTR(-EINVAL);
994 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
995 return ERR_PTR(-EINVAL);
998 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
999 return ERR_PTR(-ENOSYS);
1002 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1004 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1005 return ERR_PTR(-ENOMEM);
1008 tpg->lport_tpgt = tpgt;
1010 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1013 tpg->tpg_attrib.generate_node_acls = 1;
1014 tpg->tpg_attrib.demo_mode_write_protect = 1;
1015 tpg->tpg_attrib.cache_dynamic_acls = 1;
1016 tpg->tpg_attrib.demo_mode_login_only = 1;
1017 tpg->tpg_attrib.jam_host = 0;
1019 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1027 return &tpg->se_tpg;
1030 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1032 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1033 struct tcm_qla2xxx_tpg, se_tpg);
1034 struct tcm_qla2xxx_lport *lport = tpg->lport;
1035 struct scsi_qla_host *vha = lport->qla_vha;
1037 * Call into qla2x_target.c LLD logic to shutdown the active
1038 * FC Nexuses and disable target mode operation for this qla_hw_data
1040 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1041 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1043 core_tpg_deregister(se_tpg);
1045 * Clear local TPG=1 pointer for non NPIV mode.
1047 lport->tpg_1 = NULL;
1051 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1054 return tcm_qla2xxx_tpg_enable_show(item, page);
1057 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1058 const char *page, size_t count)
1060 struct se_portal_group *se_tpg = to_tpg(item);
1061 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1062 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1063 struct tcm_qla2xxx_lport, lport_wwn);
1064 struct scsi_qla_host *vha = lport->qla_vha;
1065 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1066 struct tcm_qla2xxx_tpg, se_tpg);
1070 rc = kstrtoul(page, 0, &op);
1072 pr_err("kstrtoul() returned %d\n", rc);
1075 if ((op != 1) && (op != 0)) {
1076 pr_err("Illegal value for tpg_enable: %lu\n", op);
1080 if (atomic_read(&tpg->lport_tpg_enabled))
1083 atomic_set(&tpg->lport_tpg_enabled, 1);
1084 qlt_enable_vha(vha);
1086 if (!atomic_read(&tpg->lport_tpg_enabled))
1089 atomic_set(&tpg->lport_tpg_enabled, 0);
1090 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1096 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1098 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1099 &tcm_qla2xxx_npiv_tpg_attr_enable,
1103 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
1106 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1107 struct tcm_qla2xxx_lport, lport_wwn);
1108 struct tcm_qla2xxx_tpg *tpg;
1112 if (strstr(name, "tpgt_") != name)
1113 return ERR_PTR(-EINVAL);
1114 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1115 return ERR_PTR(-EINVAL);
1117 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1119 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1120 return ERR_PTR(-ENOMEM);
1123 tpg->lport_tpgt = tpgt;
1126 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1129 tpg->tpg_attrib.generate_node_acls = 1;
1130 tpg->tpg_attrib.demo_mode_write_protect = 1;
1131 tpg->tpg_attrib.cache_dynamic_acls = 1;
1132 tpg->tpg_attrib.demo_mode_login_only = 1;
1134 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1140 return &tpg->se_tpg;
1144 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1146 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
1149 struct tcm_qla2xxx_lport *lport;
1150 struct se_node_acl *se_nacl;
1151 struct tcm_qla2xxx_nacl *nacl;
1154 lport = vha->vha_tgt.target_lport_ptr;
1156 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1161 key = sid_to_key(s_id);
1162 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1164 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1166 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1169 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1170 se_nacl, se_nacl->initiatorname);
1172 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1173 if (!nacl->fc_port) {
1174 pr_err("Unable to locate struct fc_port\n");
1178 return nacl->fc_port;
1182 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1184 static void tcm_qla2xxx_set_sess_by_s_id(
1185 struct tcm_qla2xxx_lport *lport,
1186 struct se_node_acl *new_se_nacl,
1187 struct tcm_qla2xxx_nacl *nacl,
1188 struct se_session *se_sess,
1189 struct fc_port *fc_port,
1196 key = sid_to_key(s_id);
1197 pr_debug("set_sess_by_s_id: %06x\n", key);
1199 slot = btree_lookup32(&lport->lport_fcport_map, key);
1202 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1203 nacl->nport_id = key;
1204 rc = btree_insert32(&lport->lport_fcport_map, key,
1205 new_se_nacl, GFP_ATOMIC);
1207 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1210 pr_debug("Wiping nonexisting fc_port entry\n");
1213 fc_port->se_sess = se_sess;
1214 nacl->fc_port = fc_port;
1218 if (nacl->fc_port) {
1219 if (new_se_nacl == NULL) {
1220 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1221 btree_remove32(&lport->lport_fcport_map, key);
1222 nacl->fc_port = NULL;
1225 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1226 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1227 fc_port->se_sess = se_sess;
1228 nacl->fc_port = fc_port;
1232 if (new_se_nacl == NULL) {
1233 pr_debug("Clearing existing fc_port entry\n");
1234 btree_remove32(&lport->lport_fcport_map, key);
1238 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1239 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1240 fc_port->se_sess = se_sess;
1241 nacl->fc_port = fc_port;
1243 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1244 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1248 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1250 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1251 scsi_qla_host_t *vha,
1252 const uint16_t loop_id)
1254 struct tcm_qla2xxx_lport *lport;
1255 struct se_node_acl *se_nacl;
1256 struct tcm_qla2xxx_nacl *nacl;
1257 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1259 lport = vha->vha_tgt.target_lport_ptr;
1261 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1266 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1268 fc_loopid = lport->lport_loopid_map + loop_id;
1269 se_nacl = fc_loopid->se_nacl;
1271 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1276 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1278 if (!nacl->fc_port) {
1279 pr_err("Unable to locate struct fc_port\n");
1283 return nacl->fc_port;
1287 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1289 static void tcm_qla2xxx_set_sess_by_loop_id(
1290 struct tcm_qla2xxx_lport *lport,
1291 struct se_node_acl *new_se_nacl,
1292 struct tcm_qla2xxx_nacl *nacl,
1293 struct se_session *se_sess,
1294 struct fc_port *fc_port,
1297 struct se_node_acl *saved_nacl;
1298 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1300 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1302 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1303 lport->lport_loopid_map)[loop_id];
1305 saved_nacl = fc_loopid->se_nacl;
1307 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1308 fc_loopid->se_nacl = new_se_nacl;
1309 if (fc_port->se_sess != se_sess)
1310 fc_port->se_sess = se_sess;
1311 if (nacl->fc_port != fc_port)
1312 nacl->fc_port = fc_port;
1316 if (nacl->fc_port) {
1317 if (new_se_nacl == NULL) {
1318 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1319 fc_loopid->se_nacl = NULL;
1320 nacl->fc_port = NULL;
1324 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1325 fc_loopid->se_nacl = new_se_nacl;
1326 if (fc_port->se_sess != se_sess)
1327 fc_port->se_sess = se_sess;
1328 if (nacl->fc_port != fc_port)
1329 nacl->fc_port = fc_port;
1333 if (new_se_nacl == NULL) {
1334 pr_debug("Clearing fc_loopid->se_nacl\n");
1335 fc_loopid->se_nacl = NULL;
1339 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1340 fc_loopid->se_nacl = new_se_nacl;
1341 if (fc_port->se_sess != se_sess)
1342 fc_port->se_sess = se_sess;
1343 if (nacl->fc_port != fc_port)
1344 nacl->fc_port = fc_port;
1346 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1347 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1351 * Should always be called with qla_hw_data->tgt.sess_lock held.
1353 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1354 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1356 struct se_session *se_sess = sess->se_sess;
1358 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1359 sess, port_id_to_be_id(sess->d_id));
1360 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1361 sess, sess->loop_id);
1364 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1366 struct qla_tgt *tgt = sess->tgt;
1367 struct qla_hw_data *ha = tgt->ha;
1368 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1369 struct se_session *se_sess;
1370 struct tcm_qla2xxx_lport *lport;
1372 BUG_ON(in_interrupt());
1374 se_sess = sess->se_sess;
1376 pr_err("struct fc_port->se_sess is NULL\n");
1381 lport = vha->vha_tgt.target_lport_ptr;
1383 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1387 target_wait_for_sess_cmds(se_sess);
1389 target_remove_session(se_sess);
1392 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1393 struct se_session *se_sess, void *p)
1395 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1396 struct tcm_qla2xxx_tpg, se_tpg);
1397 struct tcm_qla2xxx_lport *lport = tpg->lport;
1398 struct qla_hw_data *ha = lport->qla_vha->hw;
1399 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1400 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1401 struct tcm_qla2xxx_nacl, se_node_acl);
1402 struct fc_port *qlat_sess = p;
1403 uint16_t loop_id = qlat_sess->loop_id;
1404 unsigned long flags;
1407 * And now setup se_nacl and session pointers into HW lport internal
1408 * mappings for fabric S_ID and LOOP_ID.
1410 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1411 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
1412 port_id_to_be_id(qlat_sess->d_id));
1413 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1414 se_sess, qlat_sess, loop_id);
1415 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1421 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1422 * to locate struct se_node_acl
1424 static int tcm_qla2xxx_check_initiator_node_acl(
1425 scsi_qla_host_t *vha,
1426 unsigned char *fc_wwpn,
1427 struct fc_port *qlat_sess)
1429 struct qla_hw_data *ha = vha->hw;
1430 struct tcm_qla2xxx_lport *lport;
1431 struct tcm_qla2xxx_tpg *tpg;
1432 struct se_session *se_sess;
1433 unsigned char port_name[36];
1434 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1435 TCM_QLA2XXX_DEFAULT_TAGS;
1437 lport = vha->vha_tgt.target_lport_ptr;
1439 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1444 * Locate the TPG=1 reference..
1448 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
1452 * Format the FCP Initiator port_name into colon seperated values to
1453 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1455 memset(&port_name, 0, 36);
1456 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1458 * Locate our struct se_node_acl either from an explict NodeACL created
1459 * via ConfigFS, or via running in TPG demo mode.
1461 se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1462 sizeof(struct qla_tgt_cmd),
1463 TARGET_PROT_ALL, port_name,
1464 qlat_sess, tcm_qla2xxx_session_cb);
1465 if (IS_ERR(se_sess))
1466 return PTR_ERR(se_sess);
1471 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1472 uint16_t loop_id, bool conf_compl_supported)
1474 struct qla_tgt *tgt = sess->tgt;
1475 struct qla_hw_data *ha = tgt->ha;
1476 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1477 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1478 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1479 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1480 struct tcm_qla2xxx_nacl, se_node_acl);
1484 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1485 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1486 sess, sess->port_name,
1487 sess->loop_id, loop_id, sess->d_id.b.domain,
1488 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1489 s_id.b.area, s_id.b.al_pa);
1491 if (sess->loop_id != loop_id) {
1493 * Because we can shuffle loop IDs around and we
1494 * update different sessions non-atomically, we might
1495 * have overwritten this session's old loop ID
1496 * already, and we might end up overwriting some other
1497 * session that will be updated later. So we have to
1498 * be extra careful and we can't warn about those things...
1500 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1501 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1503 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1505 sess->loop_id = loop_id;
1508 if (sess->d_id.b24 != s_id.b24) {
1509 key = (((u32) sess->d_id.b.domain << 16) |
1510 ((u32) sess->d_id.b.area << 8) |
1511 ((u32) sess->d_id.b.al_pa));
1513 if (btree_lookup32(&lport->lport_fcport_map, key))
1514 WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1515 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1516 sess->d_id.b.domain, sess->d_id.b.area,
1517 sess->d_id.b.al_pa);
1519 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1520 sess->d_id.b.domain, sess->d_id.b.area,
1521 sess->d_id.b.al_pa);
1523 key = (((u32) s_id.b.domain << 16) |
1524 ((u32) s_id.b.area << 8) |
1525 ((u32) s_id.b.al_pa));
1527 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1528 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1529 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1530 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1532 btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1537 nacl->nport_id = key;
1540 sess->conf_compl_supported = conf_compl_supported;
1545 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1547 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1548 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
1549 .handle_cmd = tcm_qla2xxx_handle_cmd,
1550 .handle_data = tcm_qla2xxx_handle_data,
1551 .handle_tmr = tcm_qla2xxx_handle_tmr,
1552 .free_cmd = tcm_qla2xxx_free_cmd,
1553 .free_mcmd = tcm_qla2xxx_free_mcmd,
1554 .free_session = tcm_qla2xxx_free_session,
1555 .update_sess = tcm_qla2xxx_update_sess,
1556 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1557 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1558 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1559 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1560 .put_sess = tcm_qla2xxx_put_sess,
1561 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1562 .get_dif_tags = tcm_qla2xxx_dif_tags,
1563 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
1566 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1570 rc = btree_init32(&lport->lport_fcport_map);
1572 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1576 lport->lport_loopid_map =
1577 vzalloc(array_size(65536,
1578 sizeof(struct tcm_qla2xxx_fc_loopid)));
1579 if (!lport->lport_loopid_map) {
1580 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1581 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1582 btree_destroy32(&lport->lport_fcport_map);
1585 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1586 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1590 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1591 void *target_lport_ptr,
1592 u64 npiv_wwpn, u64 npiv_wwnn)
1594 struct qla_hw_data *ha = vha->hw;
1595 struct tcm_qla2xxx_lport *lport =
1596 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1598 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1600 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1601 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1602 lport->qla_vha = vha;
1607 static struct se_wwn *tcm_qla2xxx_make_lport(
1608 struct target_fabric_configfs *tf,
1609 struct config_group *group,
1612 struct tcm_qla2xxx_lport *lport;
1616 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1617 return ERR_PTR(-EINVAL);
1619 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1621 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1622 return ERR_PTR(-ENOMEM);
1624 lport->lport_wwpn = wwpn;
1625 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1627 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1629 ret = tcm_qla2xxx_init_lport(lport);
1633 ret = qlt_lport_register(lport, wwpn, 0, 0,
1634 tcm_qla2xxx_lport_register_cb);
1638 return &lport->lport_wwn;
1640 vfree(lport->lport_loopid_map);
1641 btree_destroy32(&lport->lport_fcport_map);
1644 return ERR_PTR(ret);
1647 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1649 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1650 struct tcm_qla2xxx_lport, lport_wwn);
1651 struct scsi_qla_host *vha = lport->qla_vha;
1652 struct se_node_acl *node;
1656 * Call into qla2x_target.c LLD logic to complete the
1657 * shutdown of struct qla_tgt after the call to
1658 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1660 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1661 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1663 qlt_lport_deregister(vha);
1665 vfree(lport->lport_loopid_map);
1666 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1667 btree_remove32(&lport->lport_fcport_map, key);
1668 btree_destroy32(&lport->lport_fcport_map);
1672 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1673 void *target_lport_ptr,
1674 u64 npiv_wwpn, u64 npiv_wwnn)
1676 struct fc_vport *vport;
1677 struct Scsi_Host *sh = base_vha->host;
1678 struct scsi_qla_host *npiv_vha;
1679 struct tcm_qla2xxx_lport *lport =
1680 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1681 struct tcm_qla2xxx_lport *base_lport =
1682 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1683 struct fc_vport_identifiers vport_id;
1685 if (qla_ini_mode_enabled(base_vha)) {
1686 pr_err("qla2xxx base_vha not enabled for target mode\n");
1690 if (!base_lport || !base_lport->tpg_1 ||
1691 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1692 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1696 memset(&vport_id, 0, sizeof(vport_id));
1697 vport_id.port_name = npiv_wwpn;
1698 vport_id.node_name = npiv_wwnn;
1699 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1700 vport_id.vport_type = FC_PORTTYPE_NPIV;
1701 vport_id.disable = false;
1703 vport = fc_vport_create(sh, 0, &vport_id);
1705 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1709 * Setup local pointer to NPIV vhba + target_lport_ptr
1711 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1712 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1713 lport->qla_vha = npiv_vha;
1714 scsi_host_get(npiv_vha->host);
1719 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1720 struct target_fabric_configfs *tf,
1721 struct config_group *group,
1724 struct tcm_qla2xxx_lport *lport;
1725 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1729 snprintf(tmp, 128, "%s", name);
1731 p = strchr(tmp, '@');
1733 pr_err("Unable to locate NPIV '@' separator\n");
1734 return ERR_PTR(-EINVAL);
1738 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1739 return ERR_PTR(-EINVAL);
1741 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1742 &npiv_wwpn, &npiv_wwnn) < 0)
1743 return ERR_PTR(-EINVAL);
1745 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1747 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1748 return ERR_PTR(-ENOMEM);
1750 lport->lport_npiv_wwpn = npiv_wwpn;
1751 lport->lport_npiv_wwnn = npiv_wwnn;
1752 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1754 ret = tcm_qla2xxx_init_lport(lport);
1758 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1759 tcm_qla2xxx_lport_register_npiv_cb);
1763 return &lport->lport_wwn;
1765 vfree(lport->lport_loopid_map);
1766 btree_destroy32(&lport->lport_fcport_map);
1769 return ERR_PTR(ret);
1772 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1774 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1775 struct tcm_qla2xxx_lport, lport_wwn);
1776 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1777 struct qla_hw_data *ha = npiv_vha->hw;
1778 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1780 scsi_host_put(npiv_vha->host);
1782 * Notify libfc that we want to release the vha->fc_vport
1784 fc_vport_terminate(npiv_vha->fc_vport);
1785 scsi_host_put(base_vha->host);
1790 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1793 return sprintf(page,
1794 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1795 QLA2XXX_VERSION, utsname()->sysname,
1796 utsname()->machine, utsname()->release);
1799 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1801 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1802 &tcm_qla2xxx_wwn_attr_version,
1806 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1807 .module = THIS_MODULE,
1808 .fabric_name = "qla2xxx",
1809 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1811 * XXX: Limit assumes single page per scatter-gather-list entry.
1812 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1814 .max_data_sg_nents = 1200,
1815 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1816 .tpg_get_tag = tcm_qla2xxx_get_tag,
1817 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1818 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1819 .tpg_check_demo_mode_write_protect =
1820 tcm_qla2xxx_check_demo_write_protect,
1821 .tpg_check_prod_mode_write_protect =
1822 tcm_qla2xxx_check_prod_write_protect,
1823 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1824 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1825 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1826 .check_stop_free = tcm_qla2xxx_check_stop_free,
1827 .release_cmd = tcm_qla2xxx_release_cmd,
1828 .close_session = tcm_qla2xxx_close_session,
1829 .sess_get_index = tcm_qla2xxx_sess_get_index,
1830 .sess_get_initiator_sid = NULL,
1831 .write_pending = tcm_qla2xxx_write_pending,
1832 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1833 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1834 .queue_data_in = tcm_qla2xxx_queue_data_in,
1835 .queue_status = tcm_qla2xxx_queue_status,
1836 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1837 .aborted_task = tcm_qla2xxx_aborted_task,
1839 * Setup function pointers for generic logic in
1840 * target_core_fabric_configfs.c
1842 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1843 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1844 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1845 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1846 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1848 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1849 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1850 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1853 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1854 .module = THIS_MODULE,
1855 .fabric_name = "qla2xxx_npiv",
1856 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1857 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1858 .tpg_get_tag = tcm_qla2xxx_get_tag,
1859 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1860 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1861 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1862 .tpg_check_prod_mode_write_protect =
1863 tcm_qla2xxx_check_prod_write_protect,
1864 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1865 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1866 .check_stop_free = tcm_qla2xxx_check_stop_free,
1867 .release_cmd = tcm_qla2xxx_release_cmd,
1868 .close_session = tcm_qla2xxx_close_session,
1869 .sess_get_index = tcm_qla2xxx_sess_get_index,
1870 .sess_get_initiator_sid = NULL,
1871 .write_pending = tcm_qla2xxx_write_pending,
1872 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1873 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1874 .queue_data_in = tcm_qla2xxx_queue_data_in,
1875 .queue_status = tcm_qla2xxx_queue_status,
1876 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1877 .aborted_task = tcm_qla2xxx_aborted_task,
1879 * Setup function pointers for generic logic in
1880 * target_core_fabric_configfs.c
1882 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1883 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1884 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1885 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1886 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1888 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1889 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1892 static int tcm_qla2xxx_register_configfs(void)
1896 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1897 QLA2XXX_VERSION, utsname()->sysname,
1898 utsname()->machine, utsname()->release);
1900 ret = target_register_template(&tcm_qla2xxx_ops);
1904 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1908 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1910 if (!tcm_qla2xxx_free_wq) {
1912 goto out_fabric_npiv;
1918 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1920 target_unregister_template(&tcm_qla2xxx_ops);
1924 static void tcm_qla2xxx_deregister_configfs(void)
1926 destroy_workqueue(tcm_qla2xxx_free_wq);
1928 target_unregister_template(&tcm_qla2xxx_ops);
1929 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1932 static int __init tcm_qla2xxx_init(void)
1936 ret = tcm_qla2xxx_register_configfs();
1943 static void __exit tcm_qla2xxx_exit(void)
1945 tcm_qla2xxx_deregister_configfs();
1948 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1949 MODULE_LICENSE("GPL");
1950 module_init(tcm_qla2xxx_init);
1951 module_exit(tcm_qla2xxx_exit);