1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
5 * ?? Copyright 2010-2011 RisingTide Systems LLC.
7 * Licensed to the Linux Foundation under the General Public License (GPL)
10 * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
12 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
13 * the TCM_FC / Open-FCoE.org fabric module.
15 * Copyright (c) 2010 Cisco Systems, Inc
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 ****************************************************************************/
29 #include <linux/module.h>
30 #include <linux/moduleparam.h>
31 #include <generated/utsrelease.h>
32 #include <linux/utsname.h>
33 #include <linux/init.h>
34 #include <linux/list.h>
35 #include <linux/slab.h>
36 #include <linux/kthread.h>
37 #include <linux/types.h>
38 #include <linux/string.h>
39 #include <linux/configfs.h>
40 #include <linux/ctype.h>
41 #include <asm/unaligned.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_cmnd.h>
46 #include <target/target_core_base.h>
47 #include <target/target_core_fabric.h>
48 #include <target/target_core_fabric_configfs.h>
49 #include <target/target_core_configfs.h>
50 #include <target/configfs_macros.h>
53 #include "qla_target.h"
54 #include "tcm_qla2xxx.h"
56 struct workqueue_struct *tcm_qla2xxx_free_wq;
57 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
59 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
64 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
71 * If strict, we require lower-case hex and colon separators to be sure
72 * the name is the same as what would be generated by ft_format_wwn()
73 * so the name and wwn are mapped one-to-one.
75 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
85 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
87 if (c == '\n' && cp[1] == '\0')
89 if (strict && pos++ == 2 && byte++ < 7) {
98 if (strict && byte != 8)
105 else if (isxdigit(c) && (islower(c) || !strict))
106 nibble = tolower(c) - 'a' + 10;
109 *wwn = (*wwn << 4) | nibble;
113 pr_debug("err %u len %zu pos %u byte %u\n",
114 err, cp - name, pos, byte);
118 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
122 put_unaligned_be64(wwn, b);
123 return snprintf(buf, len,
124 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
125 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
128 static char *tcm_qla2xxx_get_fabric_name(void)
134 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
136 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
141 memset(wwn, 0, sizeof(wwn));
143 /* Validate and store the new name */
144 for (i = 0, j = 0; i < 16; i++) {
147 value = hex_to_bin(*ns++);
149 j = (j << 4) | value;
159 *nm = wwn_to_u64(wwn);
164 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
165 * store_fc_host_vport_create()
167 static int tcm_qla2xxx_npiv_parse_wwn(
173 unsigned int cnt = count;
179 /* count may include a LF at end of string */
180 if (name[cnt-1] == '\n')
183 /* validate we have enough characters for WWPN */
184 if ((cnt != (16+1+16)) || (name[16] != ':'))
187 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
191 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
198 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
203 put_unaligned_be64(wwpn, b);
204 put_unaligned_be64(wwnn, b2);
205 return snprintf(buf, len,
206 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
207 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
208 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
209 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
212 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
214 return "qla2xxx_npiv";
217 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
219 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
220 struct tcm_qla2xxx_tpg, se_tpg);
221 struct tcm_qla2xxx_lport *lport = tpg->lport;
224 switch (lport->lport_proto_id) {
225 case SCSI_PROTOCOL_FCP:
227 proto_id = fc_get_fabric_proto_ident(se_tpg);
234 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
237 struct tcm_qla2xxx_tpg, se_tpg);
238 struct tcm_qla2xxx_lport *lport = tpg->lport;
240 return &lport->lport_name[0];
243 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
246 struct tcm_qla2xxx_tpg, se_tpg);
247 struct tcm_qla2xxx_lport *lport = tpg->lport;
249 return &lport->lport_npiv_name[0];
252 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
256 return tpg->lport_tpgt;
259 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
264 static u32 tcm_qla2xxx_get_pr_transport_id(
265 struct se_portal_group *se_tpg,
266 struct se_node_acl *se_nacl,
267 struct t10_pr_registration *pr_reg,
271 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
272 struct tcm_qla2xxx_tpg, se_tpg);
273 struct tcm_qla2xxx_lport *lport = tpg->lport;
276 switch (lport->lport_proto_id) {
277 case SCSI_PROTOCOL_FCP:
279 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
287 static u32 tcm_qla2xxx_get_pr_transport_id_len(
288 struct se_portal_group *se_tpg,
289 struct se_node_acl *se_nacl,
290 struct t10_pr_registration *pr_reg,
293 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
294 struct tcm_qla2xxx_tpg, se_tpg);
295 struct tcm_qla2xxx_lport *lport = tpg->lport;
298 switch (lport->lport_proto_id) {
299 case SCSI_PROTOCOL_FCP:
301 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
309 static char *tcm_qla2xxx_parse_pr_out_transport_id(
310 struct se_portal_group *se_tpg,
313 char **port_nexus_ptr)
315 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
316 struct tcm_qla2xxx_tpg, se_tpg);
317 struct tcm_qla2xxx_lport *lport = tpg->lport;
320 switch (lport->lport_proto_id) {
321 case SCSI_PROTOCOL_FCP:
323 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
331 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
334 struct tcm_qla2xxx_tpg, se_tpg);
336 return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
339 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
342 struct tcm_qla2xxx_tpg, se_tpg);
344 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
347 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
349 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
350 struct tcm_qla2xxx_tpg, se_tpg);
352 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
355 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
357 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
358 struct tcm_qla2xxx_tpg, se_tpg);
360 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
363 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
364 struct se_portal_group *se_tpg)
366 struct tcm_qla2xxx_nacl *nacl;
368 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
370 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
374 return &nacl->se_node_acl;
377 static void tcm_qla2xxx_release_fabric_acl(
378 struct se_portal_group *se_tpg,
379 struct se_node_acl *se_nacl)
381 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
382 struct tcm_qla2xxx_nacl, se_node_acl);
386 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
388 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
389 struct tcm_qla2xxx_tpg, se_tpg);
391 return tpg->lport_tpgt;
394 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
396 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
397 struct qla_tgt_mgmt_cmd, free_work);
399 transport_generic_free_cmd(&mcmd->se_cmd, 0);
403 * Called from qla_target_template->free_mcmd(), and will call
404 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
405 * release callback. qla_hw_data->hardware_lock is expected to be held
407 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
409 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
410 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
413 static void tcm_qla2xxx_complete_free(struct work_struct *work)
415 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
417 transport_generic_free_cmd(&cmd->se_cmd, 0);
421 * Called from qla_target_template->free_cmd(), and will call
422 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
423 * release callback. qla_hw_data->hardware_lock is expected to be held
425 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
427 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
428 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
432 * Called from struct target_core_fabric_ops->check_stop_free() context
434 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
436 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
439 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
440 * fabric descriptor @se_cmd command to release
442 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
444 struct qla_tgt_cmd *cmd;
446 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
447 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
448 struct qla_tgt_mgmt_cmd, se_cmd);
453 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
457 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
459 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
460 struct scsi_qla_host *vha;
466 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
467 sess->tearing_down = 1;
468 target_splice_sess_cmd_list(se_sess);
469 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
474 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
476 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
477 struct scsi_qla_host *vha;
483 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
484 qlt_unreg_sess(sess);
485 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
488 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
494 * The LIO target core uses DMA_TO_DEVICE to mean that data is going
495 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
496 * that data is coming from the target (eg handling a READ). However,
497 * this is just the opposite of what we have to tell the DMA mapping
498 * layer -- eg when handling a READ, the HBA will have to DMA the data
499 * out of memory so it can send it to the initiator, which means we
500 * need to use DMA_TO_DEVICE when we map the data.
502 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
504 if (se_cmd->se_cmd_flags & SCF_BIDI)
505 return DMA_BIDIRECTIONAL;
507 switch (se_cmd->data_direction) {
509 return DMA_FROM_DEVICE;
510 case DMA_FROM_DEVICE:
511 return DMA_TO_DEVICE;
518 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
520 struct qla_tgt_cmd *cmd = container_of(se_cmd,
521 struct qla_tgt_cmd, se_cmd);
523 cmd->bufflen = se_cmd->data_length;
524 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
526 cmd->sg_cnt = se_cmd->t_data_nents;
527 cmd->sg = se_cmd->t_data_sg;
530 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
531 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
533 return qlt_rdy_to_xfer(cmd);
536 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
540 * Check for WRITE_PENDING status to determine if we need to wait for
541 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
543 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
544 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
545 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
546 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
547 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
551 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
556 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
561 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
563 struct qla_tgt_cmd *cmd = container_of(se_cmd,
564 struct qla_tgt_cmd, se_cmd);
569 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
575 * Called from process context in qla_target.c:qlt_do_work() code
577 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
578 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
579 int data_dir, int bidi)
581 struct se_cmd *se_cmd = &cmd->se_cmd;
582 struct se_session *se_sess;
583 struct qla_tgt_sess *sess;
584 int flags = TARGET_SCF_ACK_KREF;
587 flags |= TARGET_SCF_BIDI_OP;
591 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
595 se_sess = sess->se_sess;
597 pr_err("Unable to locate active struct se_session\n");
601 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
602 cmd->unpacked_lun, data_length, fcp_task_attr,
607 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
609 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
612 * Ensure that the complete FCP WRITE payload has been received.
613 * Otherwise return an exception via CHECK_CONDITION status.
615 if (!cmd->write_data_transferred) {
617 * Check if se_cmd has already been aborted via LUN_RESET, and
618 * waiting upon completion in tcm_qla2xxx_write_pending_status()
620 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
621 complete(&cmd->se_cmd.t_transport_stop_comp);
625 cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
626 transport_generic_request_failure(&cmd->se_cmd);
630 return target_execute_cmd(&cmd->se_cmd);
634 * Called from qla_target.c:qlt_do_ctio_completion()
636 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
638 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
639 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
643 * Called from qla_target.c:qlt_issue_task_mgmt()
645 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
646 uint8_t tmr_func, uint32_t tag)
648 struct qla_tgt_sess *sess = mcmd->sess;
649 struct se_cmd *se_cmd = &mcmd->se_cmd;
651 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
652 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
655 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
657 struct qla_tgt_cmd *cmd = container_of(se_cmd,
658 struct qla_tgt_cmd, se_cmd);
660 cmd->bufflen = se_cmd->data_length;
661 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
662 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
664 cmd->sg_cnt = se_cmd->t_data_nents;
665 cmd->sg = se_cmd->t_data_sg;
669 * Now queue completed DATA_IN the qla2xxx LLD and response ring
671 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
672 se_cmd->scsi_status);
675 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
677 struct qla_tgt_cmd *cmd = container_of(se_cmd,
678 struct qla_tgt_cmd, se_cmd);
679 int xmit_type = QLA_TGT_XMIT_STATUS;
681 cmd->bufflen = se_cmd->data_length;
685 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
686 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
688 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
690 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
691 * for qla_tgt_xmit_response LLD code
693 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
694 se_cmd->residual_count = se_cmd->data_length;
699 * Now queue status response to qla2xxx LLD code and response ring
701 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
704 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
706 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
707 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
708 struct qla_tgt_mgmt_cmd, se_cmd);
710 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
711 mcmd, se_tmr->function, se_tmr->response);
713 * Do translation between TCM TM response codes and
714 * QLA2xxx FC TM response codes.
716 switch (se_tmr->response) {
717 case TMR_FUNCTION_COMPLETE:
718 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
720 case TMR_TASK_DOES_NOT_EXIST:
721 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
723 case TMR_FUNCTION_REJECTED:
724 mcmd->fc_tm_rsp = FC_TM_REJECT;
726 case TMR_LUN_DOES_NOT_EXIST:
728 mcmd->fc_tm_rsp = FC_TM_FAILED;
732 * Queue the TM response to QLA2xxx LLD to build a
733 * CTIO response packet.
735 qlt_xmit_tm_rsp(mcmd);
740 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
745 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
751 /* Local pointer to allocated TCM configfs fabric module */
752 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
753 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
755 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
756 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
758 * Expected to be called with struct qla_hw_data->hardware_lock held
760 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
762 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
763 struct se_portal_group *se_tpg = se_nacl->se_tpg;
764 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
765 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
766 struct tcm_qla2xxx_lport, lport_wwn);
767 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
768 struct tcm_qla2xxx_nacl, se_node_acl);
771 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
773 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
774 WARN_ON(node && (node != se_nacl));
776 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
777 se_nacl, nacl->nport_wwnn, nacl->nport_id);
779 * Now clear the se_nacl and session pointers from our HW lport lookup
780 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
782 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
783 * target_wait_for_sess_cmds() before the session waits for outstanding
784 * I/O to complete, to avoid a race between session shutdown execution
785 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
787 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
790 static void tcm_qla2xxx_release_session(struct kref *kref)
792 struct se_session *se_sess = container_of(kref,
793 struct se_session, sess_kref);
795 qlt_unreg_sess(se_sess->fabric_sess_ptr);
798 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
800 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
801 struct qla_hw_data *ha = sess->vha->hw;
804 spin_lock_irqsave(&ha->hardware_lock, flags);
805 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
806 spin_unlock_irqrestore(&ha->hardware_lock, flags);
809 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
811 tcm_qla2xxx_put_session(sess->se_sess);
814 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
816 tcm_qla2xxx_shutdown_session(sess->se_sess);
819 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
820 struct se_portal_group *se_tpg,
821 struct config_group *group,
824 struct se_node_acl *se_nacl, *se_nacl_new;
825 struct tcm_qla2xxx_nacl *nacl;
827 u32 qla2xxx_nexus_depth;
829 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
830 return ERR_PTR(-EINVAL);
832 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
834 return ERR_PTR(-ENOMEM);
835 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
836 qla2xxx_nexus_depth = 1;
839 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
840 * when converting a NodeACL from demo mode -> explict
842 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
843 name, qla2xxx_nexus_depth);
844 if (IS_ERR(se_nacl)) {
845 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
849 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
851 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
852 nacl->nport_wwnn = wwnn;
853 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
858 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
860 struct se_portal_group *se_tpg = se_acl->se_tpg;
861 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
862 struct tcm_qla2xxx_nacl, se_node_acl);
864 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
868 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
870 #define DEF_QLA_TPG_ATTRIB(name) \
872 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
873 struct se_portal_group *se_tpg, \
876 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
877 struct tcm_qla2xxx_tpg, se_tpg); \
879 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
882 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
883 struct se_portal_group *se_tpg, \
887 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
888 struct tcm_qla2xxx_tpg, se_tpg); \
892 ret = kstrtoul(page, 0, &val); \
894 pr_err("kstrtoul() failed with" \
895 " ret: %d\n", ret); \
898 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
900 return (!ret) ? count : -EINVAL; \
903 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
905 static int tcm_qla2xxx_set_attrib_##_name( \
906 struct tcm_qla2xxx_tpg *tpg, \
909 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
911 if ((val != 0) && (val != 1)) { \
912 pr_err("Illegal boolean value %lu\n", val); \
920 #define QLA_TPG_ATTR(_name, _mode) \
921 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
924 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
926 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
927 DEF_QLA_TPG_ATTRIB(generate_node_acls);
928 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
931 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
933 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
934 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
935 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
938 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
940 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
941 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
942 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
945 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
947 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
948 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
949 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
951 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
952 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
953 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
954 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
955 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
959 /* End items for tcm_qla2xxx_tpg_attrib_cit */
961 static ssize_t tcm_qla2xxx_tpg_show_enable(
962 struct se_portal_group *se_tpg,
965 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
966 struct tcm_qla2xxx_tpg, se_tpg);
968 return snprintf(page, PAGE_SIZE, "%d\n",
969 atomic_read(&tpg->lport_tpg_enabled));
972 static ssize_t tcm_qla2xxx_tpg_store_enable(
973 struct se_portal_group *se_tpg,
977 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
978 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
979 struct tcm_qla2xxx_lport, lport_wwn);
980 struct scsi_qla_host *vha = lport->qla_vha;
981 struct qla_hw_data *ha = vha->hw;
982 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
983 struct tcm_qla2xxx_tpg, se_tpg);
987 rc = kstrtoul(page, 0, &op);
989 pr_err("kstrtoul() returned %d\n", rc);
992 if ((op != 1) && (op != 0)) {
993 pr_err("Illegal value for tpg_enable: %lu\n", op);
998 atomic_set(&tpg->lport_tpg_enabled, 1);
1001 if (!ha->tgt.qla_tgt) {
1002 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1005 atomic_set(&tpg->lport_tpg_enabled, 0);
1006 qlt_stop_phase1(ha->tgt.qla_tgt);
1012 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1014 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1015 &tcm_qla2xxx_tpg_enable.attr,
1019 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1021 struct config_group *group,
1024 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1025 struct tcm_qla2xxx_lport, lport_wwn);
1026 struct tcm_qla2xxx_tpg *tpg;
1030 if (strstr(name, "tpgt_") != name)
1031 return ERR_PTR(-EINVAL);
1032 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1033 return ERR_PTR(-EINVAL);
1035 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1036 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1037 return ERR_PTR(-ENOSYS);
1040 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1042 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1043 return ERR_PTR(-ENOMEM);
1046 tpg->lport_tpgt = tpgt;
1048 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1051 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1052 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1053 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1055 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1056 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1062 * Setup local TPG=1 pointer for non NPIV mode.
1064 if (lport->qla_npiv_vp == NULL)
1067 return &tpg->se_tpg;
1070 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1072 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1073 struct tcm_qla2xxx_tpg, se_tpg);
1074 struct tcm_qla2xxx_lport *lport = tpg->lport;
1075 struct scsi_qla_host *vha = lport->qla_vha;
1076 struct qla_hw_data *ha = vha->hw;
1078 * Call into qla2x_target.c LLD logic to shutdown the active
1079 * FC Nexuses and disable target mode operation for this qla_hw_data
1081 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1082 qlt_stop_phase1(ha->tgt.qla_tgt);
1084 core_tpg_deregister(se_tpg);
1086 * Clear local TPG=1 pointer for non NPIV mode.
1088 if (lport->qla_npiv_vp == NULL)
1089 lport->tpg_1 = NULL;
1094 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1096 struct config_group *group,
1099 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1100 struct tcm_qla2xxx_lport, lport_wwn);
1101 struct tcm_qla2xxx_tpg *tpg;
1105 if (strstr(name, "tpgt_") != name)
1106 return ERR_PTR(-EINVAL);
1107 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1108 return ERR_PTR(-EINVAL);
1110 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1112 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1113 return ERR_PTR(-ENOMEM);
1116 tpg->lport_tpgt = tpgt;
1118 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1119 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1124 return &tpg->se_tpg;
1128 * Expected to be called with struct qla_hw_data->hardware_lock held
1130 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1131 scsi_qla_host_t *vha,
1132 const uint8_t *s_id)
1134 struct qla_hw_data *ha = vha->hw;
1135 struct tcm_qla2xxx_lport *lport;
1136 struct se_node_acl *se_nacl;
1137 struct tcm_qla2xxx_nacl *nacl;
1140 lport = ha->tgt.target_lport_ptr;
1142 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1147 key = (((unsigned long)s_id[0] << 16) |
1148 ((unsigned long)s_id[1] << 8) |
1149 (unsigned long)s_id[2]);
1150 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1152 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1154 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1157 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1158 se_nacl, se_nacl->initiatorname);
1160 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1161 if (!nacl->qla_tgt_sess) {
1162 pr_err("Unable to locate struct qla_tgt_sess\n");
1166 return nacl->qla_tgt_sess;
1170 * Expected to be called with struct qla_hw_data->hardware_lock held
1172 static void tcm_qla2xxx_set_sess_by_s_id(
1173 struct tcm_qla2xxx_lport *lport,
1174 struct se_node_acl *new_se_nacl,
1175 struct tcm_qla2xxx_nacl *nacl,
1176 struct se_session *se_sess,
1177 struct qla_tgt_sess *qla_tgt_sess,
1184 key = (((unsigned long)s_id[0] << 16) |
1185 ((unsigned long)s_id[1] << 8) |
1186 (unsigned long)s_id[2]);
1187 pr_debug("set_sess_by_s_id: %06x\n", key);
1189 slot = btree_lookup32(&lport->lport_fcport_map, key);
1192 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1193 nacl->nport_id = key;
1194 rc = btree_insert32(&lport->lport_fcport_map, key,
1195 new_se_nacl, GFP_ATOMIC);
1197 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1200 pr_debug("Wiping nonexisting fc_port entry\n");
1203 qla_tgt_sess->se_sess = se_sess;
1204 nacl->qla_tgt_sess = qla_tgt_sess;
1208 if (nacl->qla_tgt_sess) {
1209 if (new_se_nacl == NULL) {
1210 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1211 btree_remove32(&lport->lport_fcport_map, key);
1212 nacl->qla_tgt_sess = NULL;
1215 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1216 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1217 qla_tgt_sess->se_sess = se_sess;
1218 nacl->qla_tgt_sess = qla_tgt_sess;
1222 if (new_se_nacl == NULL) {
1223 pr_debug("Clearing existing fc_port entry\n");
1224 btree_remove32(&lport->lport_fcport_map, key);
1228 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1229 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1230 qla_tgt_sess->se_sess = se_sess;
1231 nacl->qla_tgt_sess = qla_tgt_sess;
1233 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1234 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1238 * Expected to be called with struct qla_hw_data->hardware_lock held
1240 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1241 scsi_qla_host_t *vha,
1242 const uint16_t loop_id)
1244 struct qla_hw_data *ha = vha->hw;
1245 struct tcm_qla2xxx_lport *lport;
1246 struct se_node_acl *se_nacl;
1247 struct tcm_qla2xxx_nacl *nacl;
1248 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1250 lport = ha->tgt.target_lport_ptr;
1252 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1257 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1259 fc_loopid = lport->lport_loopid_map + loop_id;
1260 se_nacl = fc_loopid->se_nacl;
1262 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1267 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1269 if (!nacl->qla_tgt_sess) {
1270 pr_err("Unable to locate struct qla_tgt_sess\n");
1274 return nacl->qla_tgt_sess;
1278 * Expected to be called with struct qla_hw_data->hardware_lock held
1280 static void tcm_qla2xxx_set_sess_by_loop_id(
1281 struct tcm_qla2xxx_lport *lport,
1282 struct se_node_acl *new_se_nacl,
1283 struct tcm_qla2xxx_nacl *nacl,
1284 struct se_session *se_sess,
1285 struct qla_tgt_sess *qla_tgt_sess,
1288 struct se_node_acl *saved_nacl;
1289 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1291 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1293 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1294 lport->lport_loopid_map)[loop_id];
1296 saved_nacl = fc_loopid->se_nacl;
1298 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1299 fc_loopid->se_nacl = new_se_nacl;
1300 if (qla_tgt_sess->se_sess != se_sess)
1301 qla_tgt_sess->se_sess = se_sess;
1302 if (nacl->qla_tgt_sess != qla_tgt_sess)
1303 nacl->qla_tgt_sess = qla_tgt_sess;
1307 if (nacl->qla_tgt_sess) {
1308 if (new_se_nacl == NULL) {
1309 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1310 fc_loopid->se_nacl = NULL;
1311 nacl->qla_tgt_sess = NULL;
1315 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1316 fc_loopid->se_nacl = new_se_nacl;
1317 if (qla_tgt_sess->se_sess != se_sess)
1318 qla_tgt_sess->se_sess = se_sess;
1319 if (nacl->qla_tgt_sess != qla_tgt_sess)
1320 nacl->qla_tgt_sess = qla_tgt_sess;
1324 if (new_se_nacl == NULL) {
1325 pr_debug("Clearing fc_loopid->se_nacl\n");
1326 fc_loopid->se_nacl = NULL;
1330 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1331 fc_loopid->se_nacl = new_se_nacl;
1332 if (qla_tgt_sess->se_sess != se_sess)
1333 qla_tgt_sess->se_sess = se_sess;
1334 if (nacl->qla_tgt_sess != qla_tgt_sess)
1335 nacl->qla_tgt_sess = qla_tgt_sess;
1337 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1338 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1342 * Should always be called with qla_hw_data->hardware_lock held.
1344 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1345 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1347 struct se_session *se_sess = sess->se_sess;
1348 unsigned char be_sid[3];
1350 be_sid[0] = sess->s_id.b.domain;
1351 be_sid[1] = sess->s_id.b.area;
1352 be_sid[2] = sess->s_id.b.al_pa;
1354 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1356 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1357 sess, sess->loop_id);
1360 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1362 struct qla_tgt *tgt = sess->tgt;
1363 struct qla_hw_data *ha = tgt->ha;
1364 struct se_session *se_sess;
1365 struct se_node_acl *se_nacl;
1366 struct tcm_qla2xxx_lport *lport;
1367 struct tcm_qla2xxx_nacl *nacl;
1369 BUG_ON(in_interrupt());
1371 se_sess = sess->se_sess;
1373 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1377 se_nacl = se_sess->se_node_acl;
1378 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1380 lport = ha->tgt.target_lport_ptr;
1382 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1386 target_wait_for_sess_cmds(se_sess, 0);
1388 transport_deregister_session_configfs(sess->se_sess);
1389 transport_deregister_session(sess->se_sess);
1393 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1394 * to locate struct se_node_acl
1396 static int tcm_qla2xxx_check_initiator_node_acl(
1397 scsi_qla_host_t *vha,
1398 unsigned char *fc_wwpn,
1403 struct qla_hw_data *ha = vha->hw;
1404 struct tcm_qla2xxx_lport *lport;
1405 struct tcm_qla2xxx_tpg *tpg;
1406 struct tcm_qla2xxx_nacl *nacl;
1407 struct se_portal_group *se_tpg;
1408 struct se_node_acl *se_nacl;
1409 struct se_session *se_sess;
1410 struct qla_tgt_sess *sess = qla_tgt_sess;
1411 unsigned char port_name[36];
1412 unsigned long flags;
1414 lport = ha->tgt.target_lport_ptr;
1416 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1421 * Locate the TPG=1 reference..
1425 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1428 se_tpg = &tpg->se_tpg;
1430 se_sess = transport_init_session();
1431 if (IS_ERR(se_sess)) {
1432 pr_err("Unable to initialize struct se_session\n");
1433 return PTR_ERR(se_sess);
1436 * Format the FCP Initiator port_name into colon seperated values to
1437 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1439 memset(&port_name, 0, 36);
1440 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1441 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1442 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1444 * Locate our struct se_node_acl either from an explict NodeACL created
1445 * via ConfigFS, or via running in TPG demo mode.
1447 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1449 if (!se_sess->se_node_acl) {
1450 transport_free_session(se_sess);
1453 se_nacl = se_sess->se_node_acl;
1454 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1456 * And now setup the new se_nacl and session pointers into our HW lport
1457 * mappings for fabric S_ID and LOOP_ID.
1459 spin_lock_irqsave(&ha->hardware_lock, flags);
1460 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1461 qla_tgt_sess, s_id);
1462 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1463 qla_tgt_sess, loop_id);
1464 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1466 * Finally register the new FC Nexus with TCM
1468 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1474 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1476 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1477 .handle_cmd = tcm_qla2xxx_handle_cmd,
1478 .handle_data = tcm_qla2xxx_handle_data,
1479 .handle_tmr = tcm_qla2xxx_handle_tmr,
1480 .free_cmd = tcm_qla2xxx_free_cmd,
1481 .free_mcmd = tcm_qla2xxx_free_mcmd,
1482 .free_session = tcm_qla2xxx_free_session,
1483 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1484 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1485 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1486 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1487 .put_sess = tcm_qla2xxx_put_sess,
1488 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1491 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1495 rc = btree_init32(&lport->lport_fcport_map);
1497 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1501 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1503 if (!lport->lport_loopid_map) {
1504 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1505 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1506 btree_destroy32(&lport->lport_fcport_map);
1509 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1511 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1512 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1516 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1518 struct qla_hw_data *ha = vha->hw;
1519 struct tcm_qla2xxx_lport *lport;
1521 * Setup local pointer to vha, NPIV VP pointer (if present) and
1522 * vha->tcm_lport pointer
1524 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1525 lport->qla_vha = vha;
1530 static struct se_wwn *tcm_qla2xxx_make_lport(
1531 struct target_fabric_configfs *tf,
1532 struct config_group *group,
1535 struct tcm_qla2xxx_lport *lport;
1539 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1540 return ERR_PTR(-EINVAL);
1542 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1544 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1545 return ERR_PTR(-ENOMEM);
1547 lport->lport_wwpn = wwpn;
1548 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1551 ret = tcm_qla2xxx_init_lport(lport);
1555 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1556 tcm_qla2xxx_lport_register_cb, lport);
1560 return &lport->lport_wwn;
1562 vfree(lport->lport_loopid_map);
1563 btree_destroy32(&lport->lport_fcport_map);
1566 return ERR_PTR(ret);
1569 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1571 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1572 struct tcm_qla2xxx_lport, lport_wwn);
1573 struct scsi_qla_host *vha = lport->qla_vha;
1574 struct qla_hw_data *ha = vha->hw;
1575 struct se_node_acl *node;
1579 * Call into qla2x_target.c LLD logic to complete the
1580 * shutdown of struct qla_tgt after the call to
1581 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1583 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1584 qlt_stop_phase2(ha->tgt.qla_tgt);
1586 qlt_lport_deregister(vha);
1588 vfree(lport->lport_loopid_map);
1589 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1590 btree_remove32(&lport->lport_fcport_map, key);
1591 btree_destroy32(&lport->lport_fcport_map);
1595 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1596 struct target_fabric_configfs *tf,
1597 struct config_group *group,
1600 struct tcm_qla2xxx_lport *lport;
1601 u64 npiv_wwpn, npiv_wwnn;
1604 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1605 &npiv_wwpn, &npiv_wwnn) < 0)
1606 return ERR_PTR(-EINVAL);
1608 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1610 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1611 return ERR_PTR(-ENOMEM);
1613 lport->lport_npiv_wwpn = npiv_wwpn;
1614 lport->lport_npiv_wwnn = npiv_wwnn;
1615 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1616 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1618 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1623 return &lport->lport_wwn;
1626 return ERR_PTR(ret);
1629 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1631 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1632 struct tcm_qla2xxx_lport, lport_wwn);
1633 struct scsi_qla_host *vha = lport->qla_vha;
1634 struct Scsi_Host *sh = vha->host;
1636 * Notify libfc that we want to release the lport->npiv_vport
1638 fc_vport_terminate(lport->npiv_vport);
1645 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1646 struct target_fabric_configfs *tf,
1649 return sprintf(page,
1650 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1651 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1652 utsname()->machine);
1655 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1657 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1658 &tcm_qla2xxx_wwn_version.attr,
1662 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1663 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1664 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1665 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1666 .tpg_get_tag = tcm_qla2xxx_get_tag,
1667 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1668 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1669 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1670 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1671 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1672 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1673 .tpg_check_demo_mode_write_protect =
1674 tcm_qla2xxx_check_demo_write_protect,
1675 .tpg_check_prod_mode_write_protect =
1676 tcm_qla2xxx_check_prod_write_protect,
1677 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1678 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1679 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1680 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1681 .check_stop_free = tcm_qla2xxx_check_stop_free,
1682 .release_cmd = tcm_qla2xxx_release_cmd,
1683 .put_session = tcm_qla2xxx_put_session,
1684 .shutdown_session = tcm_qla2xxx_shutdown_session,
1685 .close_session = tcm_qla2xxx_close_session,
1686 .sess_get_index = tcm_qla2xxx_sess_get_index,
1687 .sess_get_initiator_sid = NULL,
1688 .write_pending = tcm_qla2xxx_write_pending,
1689 .write_pending_status = tcm_qla2xxx_write_pending_status,
1690 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1691 .get_task_tag = tcm_qla2xxx_get_task_tag,
1692 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1693 .queue_data_in = tcm_qla2xxx_queue_data_in,
1694 .queue_status = tcm_qla2xxx_queue_status,
1695 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1696 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1697 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1699 * Setup function pointers for generic logic in
1700 * target_core_fabric_configfs.c
1702 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1703 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1704 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1705 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1706 .fabric_post_link = NULL,
1707 .fabric_pre_unlink = NULL,
1708 .fabric_make_np = NULL,
1709 .fabric_drop_np = NULL,
1710 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1711 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1714 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1715 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1716 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1717 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1718 .tpg_get_tag = tcm_qla2xxx_get_tag,
1719 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1720 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1721 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1722 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1723 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1724 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1725 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1726 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1727 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1728 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1729 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1730 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1731 .release_cmd = tcm_qla2xxx_release_cmd,
1732 .put_session = tcm_qla2xxx_put_session,
1733 .shutdown_session = tcm_qla2xxx_shutdown_session,
1734 .close_session = tcm_qla2xxx_close_session,
1735 .sess_get_index = tcm_qla2xxx_sess_get_index,
1736 .sess_get_initiator_sid = NULL,
1737 .write_pending = tcm_qla2xxx_write_pending,
1738 .write_pending_status = tcm_qla2xxx_write_pending_status,
1739 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1740 .get_task_tag = tcm_qla2xxx_get_task_tag,
1741 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1742 .queue_data_in = tcm_qla2xxx_queue_data_in,
1743 .queue_status = tcm_qla2xxx_queue_status,
1744 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1745 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1746 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1748 * Setup function pointers for generic logic in
1749 * target_core_fabric_configfs.c
1751 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1752 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1753 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1754 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1755 .fabric_post_link = NULL,
1756 .fabric_pre_unlink = NULL,
1757 .fabric_make_np = NULL,
1758 .fabric_drop_np = NULL,
1759 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1760 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1763 static int tcm_qla2xxx_register_configfs(void)
1765 struct target_fabric_configfs *fabric, *npiv_fabric;
1768 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1769 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1770 utsname()->machine);
1772 * Register the top level struct config_item_type with TCM core
1774 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1775 if (IS_ERR(fabric)) {
1776 pr_err("target_fabric_configfs_init() failed\n");
1777 return PTR_ERR(fabric);
1780 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1782 fabric->tf_ops = tcm_qla2xxx_ops;
1784 * Setup default attribute lists for various fabric->tf_cit_tmpl
1786 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1787 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1788 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1789 tcm_qla2xxx_tpg_attrib_attrs;
1790 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1791 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1792 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1793 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1794 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1795 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1797 * Register the fabric for use within TCM
1799 ret = target_fabric_configfs_register(fabric);
1801 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1805 * Setup our local pointer to *fabric
1807 tcm_qla2xxx_fabric_configfs = fabric;
1808 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1811 * Register the top level struct config_item_type for NPIV with TCM core
1813 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1814 if (IS_ERR(npiv_fabric)) {
1815 pr_err("target_fabric_configfs_init() failed\n");
1816 ret = PTR_ERR(npiv_fabric);
1820 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1822 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1824 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1826 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1827 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1828 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1829 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1830 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1831 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1832 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1833 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1834 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1836 * Register the npiv_fabric for use within TCM
1838 ret = target_fabric_configfs_register(npiv_fabric);
1840 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1844 * Setup our local pointer to *npiv_fabric
1846 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1847 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1849 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1851 if (!tcm_qla2xxx_free_wq) {
1853 goto out_fabric_npiv;
1856 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1857 if (!tcm_qla2xxx_cmd_wq) {
1865 destroy_workqueue(tcm_qla2xxx_free_wq);
1867 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1869 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1873 static void tcm_qla2xxx_deregister_configfs(void)
1875 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1876 destroy_workqueue(tcm_qla2xxx_free_wq);
1878 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1879 tcm_qla2xxx_fabric_configfs = NULL;
1880 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1882 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1883 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1884 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1887 static int __init tcm_qla2xxx_init(void)
1891 ret = tcm_qla2xxx_register_configfs();
1898 static void __exit tcm_qla2xxx_exit(void)
1900 tcm_qla2xxx_deregister_configfs();
1903 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1904 MODULE_LICENSE("GPL");
1905 module_init(tcm_qla2xxx_init);
1906 module_exit(tcm_qla2xxx_exit);