1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
5 * (c) Copyright 2010-2013 Datera, Inc.
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
12 * Copyright (c) 2010 Cisco Systems, Inc
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <generated/utsrelease.h>
29 #include <linux/utsname.h>
30 #include <linux/vmalloc.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/kthread.h>
35 #include <linux/types.h>
36 #include <linux/string.h>
37 #include <linux/configfs.h>
38 #include <linux/ctype.h>
39 #include <asm/unaligned.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <target/target_core_base.h>
45 #include <target/target_core_fabric.h>
46 #include <target/target_core_fabric_configfs.h>
47 #include <target/configfs_macros.h>
50 #include "qla_target.h"
51 #include "tcm_qla2xxx.h"
53 static struct workqueue_struct *tcm_qla2xxx_free_wq;
54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
58 * If strict, we require lower-case hex and colon separators to be sure
59 * the name is the same as what would be generated by ft_format_wwn()
60 * so the name and wwn are mapped one-to-one.
62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
74 if (c == '\n' && cp[1] == '\0')
76 if (strict && pos++ == 2 && byte++ < 7) {
85 if (strict && byte != 8)
92 else if (isxdigit(c) && (islower(c) || !strict))
93 nibble = tolower(c) - 'a' + 10;
96 *wwn = (*wwn << 4) | nibble;
100 pr_debug("err %u len %zu pos %u byte %u\n",
101 err, cp - name, pos, byte);
105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
109 put_unaligned_be64(wwn, b);
110 return snprintf(buf, len,
111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
115 static char *tcm_qla2xxx_get_fabric_name(void)
121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
128 memset(wwn, 0, sizeof(wwn));
130 /* Validate and store the new name */
131 for (i = 0, j = 0; i < 16; i++) {
134 value = hex_to_bin(*ns++);
136 j = (j << 4) | value;
146 *nm = wwn_to_u64(wwn);
151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
152 * store_fc_host_vport_create()
154 static int tcm_qla2xxx_npiv_parse_wwn(
160 unsigned int cnt = count;
166 /* count may include a LF at end of string */
167 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
170 /* validate we have enough characters for WWPN */
171 if ((cnt != (16+1+16)) || (name[16] != ':'))
174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
185 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
187 return "qla2xxx_npiv";
190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
193 struct tcm_qla2xxx_tpg, se_tpg);
194 struct tcm_qla2xxx_lport *lport = tpg->lport;
196 return lport->lport_naa_name;
199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
201 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
202 struct tcm_qla2xxx_tpg, se_tpg);
203 return tpg->lport_tpgt;
206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
208 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
209 struct tcm_qla2xxx_tpg, se_tpg);
211 return tpg->tpg_attrib.generate_node_acls;
214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
217 struct tcm_qla2xxx_tpg, se_tpg);
219 return tpg->tpg_attrib.cache_dynamic_acls;
222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
224 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
225 struct tcm_qla2xxx_tpg, se_tpg);
227 return tpg->tpg_attrib.demo_mode_write_protect;
230 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
232 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
233 struct tcm_qla2xxx_tpg, se_tpg);
235 return tpg->tpg_attrib.prod_mode_write_protect;
238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
240 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
241 struct tcm_qla2xxx_tpg, se_tpg);
243 return tpg->tpg_attrib.demo_mode_login_only;
246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
248 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
249 struct tcm_qla2xxx_tpg, se_tpg);
251 return tpg->tpg_attrib.fabric_prot_type;
254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
257 struct tcm_qla2xxx_tpg, se_tpg);
259 return tpg->lport_tpgt;
262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
264 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
265 struct qla_tgt_mgmt_cmd, free_work);
267 transport_generic_free_cmd(&mcmd->se_cmd, 0);
271 * Called from qla_target_template->free_mcmd(), and will call
272 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
273 * release callback. qla_hw_data->hardware_lock is expected to be held
275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
277 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
278 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
281 static void tcm_qla2xxx_complete_free(struct work_struct *work)
283 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
287 WARN_ON(cmd->cmd_flags & BIT_16);
289 cmd->cmd_flags |= BIT_16;
290 transport_generic_free_cmd(&cmd->se_cmd, 0);
294 * Called from qla_target_template->free_cmd(), and will call
295 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
296 * release callback. qla_hw_data->hardware_lock is expected to be held
298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
302 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
306 * Called from struct target_core_fabric_ops->check_stop_free() context
308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
310 struct qla_tgt_cmd *cmd;
312 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
313 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
314 cmd->cmd_flags |= BIT_14;
317 return target_put_sess_cmd(se_cmd);
320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
321 * fabric descriptor @se_cmd command to release
323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
325 struct qla_tgt_cmd *cmd;
327 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
328 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
329 struct qla_tgt_mgmt_cmd, se_cmd);
334 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
340 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
341 struct scsi_qla_host *vha;
347 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
348 target_sess_cmd_list_set_waiting(se_sess);
349 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
354 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
356 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
357 struct scsi_qla_host *vha;
363 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
364 qlt_unreg_sess(sess);
365 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
375 struct qla_tgt_cmd *cmd = container_of(se_cmd,
376 struct qla_tgt_cmd, se_cmd);
377 cmd->cmd_flags |= BIT_3;
378 cmd->bufflen = se_cmd->data_length;
379 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
381 cmd->sg_cnt = se_cmd->t_data_nents;
382 cmd->sg = se_cmd->t_data_sg;
384 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
385 cmd->prot_sg = se_cmd->t_prot_sg;
386 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
390 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
391 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
393 return qlt_rdy_to_xfer(cmd);
396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
400 * Check for WRITE_PENDING status to determine if we need to wait for
401 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
403 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
404 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
405 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
406 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
407 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
411 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
423 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
424 struct qla_tgt_cmd *cmd = container_of(se_cmd,
425 struct qla_tgt_cmd, se_cmd);
433 * Called from process context in qla_target.c:qlt_do_work() code
435 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
436 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
437 int data_dir, int bidi)
439 struct se_cmd *se_cmd = &cmd->se_cmd;
440 struct se_session *se_sess;
441 struct qla_tgt_sess *sess;
442 int flags = TARGET_SCF_ACK_KREF;
445 flags |= TARGET_SCF_BIDI_OP;
449 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
453 se_sess = sess->se_sess;
455 pr_err("Unable to locate active struct se_session\n");
459 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
460 cmd->unpacked_lun, data_length, fcp_task_attr,
464 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
466 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
469 * Ensure that the complete FCP WRITE payload has been received.
470 * Otherwise return an exception via CHECK_CONDITION status.
473 cmd->cmd_flags |= BIT_11;
474 if (!cmd->write_data_transferred) {
476 * Check if se_cmd has already been aborted via LUN_RESET, and
477 * waiting upon completion in tcm_qla2xxx_write_pending_status()
479 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
480 complete(&cmd->se_cmd.t_transport_stop_comp);
484 if (cmd->se_cmd.pi_err)
485 transport_generic_request_failure(&cmd->se_cmd,
488 transport_generic_request_failure(&cmd->se_cmd,
489 TCM_CHECK_CONDITION_ABORT_CMD);
494 return target_execute_cmd(&cmd->se_cmd);
498 * Called from qla_target.c:qlt_do_ctio_completion()
500 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
502 cmd->cmd_flags |= BIT_10;
504 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
505 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
508 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
510 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
512 /* take an extra kref to prevent cmd free too early.
513 * need to wait for SCSI status/check condition to
514 * finish responding generate by transport_generic_request_failure.
516 kref_get(&cmd->se_cmd.cmd_kref);
517 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
521 * Called from qla_target.c:qlt_do_ctio_completion()
523 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
525 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
526 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
530 * Called from qla_target.c:qlt_issue_task_mgmt()
532 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
533 uint8_t tmr_func, uint32_t tag)
535 struct qla_tgt_sess *sess = mcmd->sess;
536 struct se_cmd *se_cmd = &mcmd->se_cmd;
538 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
539 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
542 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
544 struct qla_tgt_cmd *cmd = container_of(se_cmd,
545 struct qla_tgt_cmd, se_cmd);
547 cmd->cmd_flags |= BIT_4;
548 cmd->bufflen = se_cmd->data_length;
549 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
551 cmd->sg_cnt = se_cmd->t_data_nents;
552 cmd->sg = se_cmd->t_data_sg;
555 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
556 cmd->prot_sg = se_cmd->t_prot_sg;
557 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
561 * Now queue completed DATA_IN the qla2xxx LLD and response ring
563 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
564 se_cmd->scsi_status);
567 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
569 struct qla_tgt_cmd *cmd = container_of(se_cmd,
570 struct qla_tgt_cmd, se_cmd);
571 int xmit_type = QLA_TGT_XMIT_STATUS;
573 cmd->bufflen = se_cmd->data_length;
577 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
578 if (cmd->cmd_flags & BIT_5) {
579 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
582 cmd->cmd_flags |= BIT_5;
584 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
586 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
587 * for qla_tgt_xmit_response LLD code
589 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
590 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
591 se_cmd->residual_count = 0;
593 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
594 se_cmd->residual_count += se_cmd->data_length;
599 * Now queue status response to qla2xxx LLD code and response ring
601 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
604 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
606 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
607 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
608 struct qla_tgt_mgmt_cmd, se_cmd);
610 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
611 mcmd, se_tmr->function, se_tmr->response);
613 * Do translation between TCM TM response codes and
614 * QLA2xxx FC TM response codes.
616 switch (se_tmr->response) {
617 case TMR_FUNCTION_COMPLETE:
618 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
620 case TMR_TASK_DOES_NOT_EXIST:
621 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
623 case TMR_FUNCTION_REJECTED:
624 mcmd->fc_tm_rsp = FC_TM_REJECT;
626 case TMR_LUN_DOES_NOT_EXIST:
628 mcmd->fc_tm_rsp = FC_TM_FAILED;
632 * Queue the TM response to QLA2xxx LLD to build a
633 * CTIO response packet.
635 qlt_xmit_tm_rsp(mcmd);
638 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
640 struct qla_tgt_cmd *cmd = container_of(se_cmd,
641 struct qla_tgt_cmd, se_cmd);
645 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
646 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
648 * Expected to be called with struct qla_hw_data->hardware_lock held
650 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
652 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
653 struct se_portal_group *se_tpg = se_nacl->se_tpg;
654 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
655 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
656 struct tcm_qla2xxx_lport, lport_wwn);
657 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
658 struct tcm_qla2xxx_nacl, se_node_acl);
661 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
663 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
664 if (WARN_ON(node && (node != se_nacl))) {
666 * The nacl no longer matches what we think it should be.
667 * Most likely a new dynamic acl has been added while
668 * someone dropped the hardware lock. It clearly is a
669 * bug elsewhere, but this bit can't make things worse.
671 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
675 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
676 se_nacl, nacl->nport_wwnn, nacl->nport_id);
678 * Now clear the se_nacl and session pointers from our HW lport lookup
679 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
681 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
682 * target_wait_for_sess_cmds() before the session waits for outstanding
683 * I/O to complete, to avoid a race between session shutdown execution
684 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
686 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
689 static void tcm_qla2xxx_release_session(struct kref *kref)
691 struct se_session *se_sess = container_of(kref,
692 struct se_session, sess_kref);
694 qlt_unreg_sess(se_sess->fabric_sess_ptr);
697 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
702 assert_spin_locked(&sess->vha->hw->hardware_lock);
703 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
706 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
708 assert_spin_locked(&sess->vha->hw->hardware_lock);
709 target_sess_cmd_list_set_waiting(sess->se_sess);
712 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
715 struct tcm_qla2xxx_nacl *nacl =
716 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
719 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
722 nacl->nport_wwnn = wwnn;
723 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
728 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
730 #define DEF_QLA_TPG_ATTRIB(name) \
732 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
733 struct se_portal_group *se_tpg, \
736 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
737 struct tcm_qla2xxx_tpg, se_tpg); \
739 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
742 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
743 struct se_portal_group *se_tpg, \
747 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
748 struct tcm_qla2xxx_tpg, se_tpg); \
752 ret = kstrtoul(page, 0, &val); \
754 pr_err("kstrtoul() failed with" \
755 " ret: %d\n", ret); \
758 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
760 return (!ret) ? count : -EINVAL; \
763 #define DEF_QLA_TPG_ATTR_BOOL(_name) \
765 static int tcm_qla2xxx_set_attrib_##_name( \
766 struct tcm_qla2xxx_tpg *tpg, \
769 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
771 if ((val != 0) && (val != 1)) { \
772 pr_err("Illegal boolean value %lu\n", val); \
780 #define QLA_TPG_ATTR(_name, _mode) \
781 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
784 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
786 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
787 DEF_QLA_TPG_ATTRIB(generate_node_acls);
788 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
791 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
793 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
794 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
795 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
798 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
800 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
801 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
802 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
805 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
807 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
808 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
809 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
812 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
814 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
815 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
816 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
818 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
819 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
820 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
821 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
822 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
823 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
827 /* End items for tcm_qla2xxx_tpg_attrib_cit */
829 static ssize_t tcm_qla2xxx_tpg_show_enable(
830 struct se_portal_group *se_tpg,
833 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
834 struct tcm_qla2xxx_tpg, se_tpg);
836 return snprintf(page, PAGE_SIZE, "%d\n",
837 atomic_read(&tpg->lport_tpg_enabled));
840 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
842 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
843 struct tcm_qla2xxx_tpg, tpg_base_work);
844 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
845 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
847 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
848 atomic_set(&base_tpg->lport_tpg_enabled, 1);
849 qlt_enable_vha(base_vha);
851 complete(&base_tpg->tpg_base_comp);
854 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
856 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
857 struct tcm_qla2xxx_tpg, tpg_base_work);
858 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
859 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
861 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
862 atomic_set(&base_tpg->lport_tpg_enabled, 0);
863 target_undepend_item(&se_tpg->tpg_group.cg_item);
865 complete(&base_tpg->tpg_base_comp);
868 static ssize_t tcm_qla2xxx_tpg_store_enable(
869 struct se_portal_group *se_tpg,
873 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
874 struct tcm_qla2xxx_tpg, se_tpg);
878 rc = kstrtoul(page, 0, &op);
880 pr_err("kstrtoul() returned %d\n", rc);
883 if ((op != 1) && (op != 0)) {
884 pr_err("Illegal value for tpg_enable: %lu\n", op);
888 if (atomic_read(&tpg->lport_tpg_enabled))
891 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
893 if (!atomic_read(&tpg->lport_tpg_enabled))
896 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
898 init_completion(&tpg->tpg_base_comp);
899 schedule_work(&tpg->tpg_base_work);
900 wait_for_completion(&tpg->tpg_base_comp);
903 if (!atomic_read(&tpg->lport_tpg_enabled))
906 if (atomic_read(&tpg->lport_tpg_enabled))
912 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
914 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
915 struct se_portal_group *se_tpg,
918 return target_show_dynamic_sessions(se_tpg, page);
921 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
923 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
924 struct se_portal_group *se_tpg,
928 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
929 struct tcm_qla2xxx_tpg, se_tpg);
931 int ret = kstrtoul(page, 0, &val);
934 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
937 if (val != 0 && val != 1 && val != 3) {
938 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
941 tpg->tpg_attrib.fabric_prot_type = val;
946 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
947 struct se_portal_group *se_tpg,
950 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
951 struct tcm_qla2xxx_tpg, se_tpg);
953 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
955 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
957 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
958 &tcm_qla2xxx_tpg_enable.attr,
959 &tcm_qla2xxx_tpg_dynamic_sessions.attr,
960 &tcm_qla2xxx_tpg_fabric_prot_type.attr,
964 static struct se_portal_group *tcm_qla2xxx_make_tpg(
966 struct config_group *group,
969 struct tcm_qla2xxx_lport *lport = container_of(wwn,
970 struct tcm_qla2xxx_lport, lport_wwn);
971 struct tcm_qla2xxx_tpg *tpg;
975 if (strstr(name, "tpgt_") != name)
976 return ERR_PTR(-EINVAL);
977 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
978 return ERR_PTR(-EINVAL);
981 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
982 return ERR_PTR(-ENOSYS);
985 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
987 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
988 return ERR_PTR(-ENOMEM);
991 tpg->lport_tpgt = tpgt;
993 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
996 tpg->tpg_attrib.generate_node_acls = 1;
997 tpg->tpg_attrib.demo_mode_write_protect = 1;
998 tpg->tpg_attrib.cache_dynamic_acls = 1;
999 tpg->tpg_attrib.demo_mode_login_only = 1;
1001 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1009 return &tpg->se_tpg;
1012 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1014 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1015 struct tcm_qla2xxx_tpg, se_tpg);
1016 struct tcm_qla2xxx_lport *lport = tpg->lport;
1017 struct scsi_qla_host *vha = lport->qla_vha;
1019 * Call into qla2x_target.c LLD logic to shutdown the active
1020 * FC Nexuses and disable target mode operation for this qla_hw_data
1022 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1023 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1025 core_tpg_deregister(se_tpg);
1027 * Clear local TPG=1 pointer for non NPIV mode.
1029 lport->tpg_1 = NULL;
1033 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1034 struct se_portal_group *se_tpg,
1037 return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1040 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1041 struct se_portal_group *se_tpg,
1045 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1046 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1047 struct tcm_qla2xxx_lport, lport_wwn);
1048 struct scsi_qla_host *vha = lport->qla_vha;
1049 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1050 struct tcm_qla2xxx_tpg, se_tpg);
1054 rc = kstrtoul(page, 0, &op);
1056 pr_err("kstrtoul() returned %d\n", rc);
1059 if ((op != 1) && (op != 0)) {
1060 pr_err("Illegal value for tpg_enable: %lu\n", op);
1064 if (atomic_read(&tpg->lport_tpg_enabled))
1067 atomic_set(&tpg->lport_tpg_enabled, 1);
1068 qlt_enable_vha(vha);
1070 if (!atomic_read(&tpg->lport_tpg_enabled))
1073 atomic_set(&tpg->lport_tpg_enabled, 0);
1074 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1080 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1082 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1083 &tcm_qla2xxx_npiv_tpg_enable.attr,
1087 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1089 struct config_group *group,
1092 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1093 struct tcm_qla2xxx_lport, lport_wwn);
1094 struct tcm_qla2xxx_tpg *tpg;
1098 if (strstr(name, "tpgt_") != name)
1099 return ERR_PTR(-EINVAL);
1100 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1101 return ERR_PTR(-EINVAL);
1103 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1105 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1106 return ERR_PTR(-ENOMEM);
1109 tpg->lport_tpgt = tpgt;
1112 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1115 tpg->tpg_attrib.generate_node_acls = 1;
1116 tpg->tpg_attrib.demo_mode_write_protect = 1;
1117 tpg->tpg_attrib.cache_dynamic_acls = 1;
1118 tpg->tpg_attrib.demo_mode_login_only = 1;
1120 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1126 return &tpg->se_tpg;
1130 * Expected to be called with struct qla_hw_data->hardware_lock held
1132 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1133 scsi_qla_host_t *vha,
1134 const uint8_t *s_id)
1136 struct tcm_qla2xxx_lport *lport;
1137 struct se_node_acl *se_nacl;
1138 struct tcm_qla2xxx_nacl *nacl;
1141 lport = vha->vha_tgt.target_lport_ptr;
1143 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1148 key = sid_to_key(s_id);
1149 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1151 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1153 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1156 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1157 se_nacl, se_nacl->initiatorname);
1159 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1160 if (!nacl->qla_tgt_sess) {
1161 pr_err("Unable to locate struct qla_tgt_sess\n");
1165 return nacl->qla_tgt_sess;
1169 * Expected to be called with struct qla_hw_data->hardware_lock held
1171 static void tcm_qla2xxx_set_sess_by_s_id(
1172 struct tcm_qla2xxx_lport *lport,
1173 struct se_node_acl *new_se_nacl,
1174 struct tcm_qla2xxx_nacl *nacl,
1175 struct se_session *se_sess,
1176 struct qla_tgt_sess *qla_tgt_sess,
1183 key = sid_to_key(s_id);
1184 pr_debug("set_sess_by_s_id: %06x\n", key);
1186 slot = btree_lookup32(&lport->lport_fcport_map, key);
1189 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1190 nacl->nport_id = key;
1191 rc = btree_insert32(&lport->lport_fcport_map, key,
1192 new_se_nacl, GFP_ATOMIC);
1194 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1197 pr_debug("Wiping nonexisting fc_port entry\n");
1200 qla_tgt_sess->se_sess = se_sess;
1201 nacl->qla_tgt_sess = qla_tgt_sess;
1205 if (nacl->qla_tgt_sess) {
1206 if (new_se_nacl == NULL) {
1207 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1208 btree_remove32(&lport->lport_fcport_map, key);
1209 nacl->qla_tgt_sess = NULL;
1212 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1213 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1214 qla_tgt_sess->se_sess = se_sess;
1215 nacl->qla_tgt_sess = qla_tgt_sess;
1219 if (new_se_nacl == NULL) {
1220 pr_debug("Clearing existing fc_port entry\n");
1221 btree_remove32(&lport->lport_fcport_map, key);
1225 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1226 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1227 qla_tgt_sess->se_sess = se_sess;
1228 nacl->qla_tgt_sess = qla_tgt_sess;
1230 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1231 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1235 * Expected to be called with struct qla_hw_data->hardware_lock held
1237 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1238 scsi_qla_host_t *vha,
1239 const uint16_t loop_id)
1241 struct tcm_qla2xxx_lport *lport;
1242 struct se_node_acl *se_nacl;
1243 struct tcm_qla2xxx_nacl *nacl;
1244 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1246 lport = vha->vha_tgt.target_lport_ptr;
1248 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1253 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1255 fc_loopid = lport->lport_loopid_map + loop_id;
1256 se_nacl = fc_loopid->se_nacl;
1258 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1263 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1265 if (!nacl->qla_tgt_sess) {
1266 pr_err("Unable to locate struct qla_tgt_sess\n");
1270 return nacl->qla_tgt_sess;
1274 * Expected to be called with struct qla_hw_data->hardware_lock held
1276 static void tcm_qla2xxx_set_sess_by_loop_id(
1277 struct tcm_qla2xxx_lport *lport,
1278 struct se_node_acl *new_se_nacl,
1279 struct tcm_qla2xxx_nacl *nacl,
1280 struct se_session *se_sess,
1281 struct qla_tgt_sess *qla_tgt_sess,
1284 struct se_node_acl *saved_nacl;
1285 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1287 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1289 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1290 lport->lport_loopid_map)[loop_id];
1292 saved_nacl = fc_loopid->se_nacl;
1294 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1295 fc_loopid->se_nacl = new_se_nacl;
1296 if (qla_tgt_sess->se_sess != se_sess)
1297 qla_tgt_sess->se_sess = se_sess;
1298 if (nacl->qla_tgt_sess != qla_tgt_sess)
1299 nacl->qla_tgt_sess = qla_tgt_sess;
1303 if (nacl->qla_tgt_sess) {
1304 if (new_se_nacl == NULL) {
1305 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1306 fc_loopid->se_nacl = NULL;
1307 nacl->qla_tgt_sess = NULL;
1311 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1312 fc_loopid->se_nacl = new_se_nacl;
1313 if (qla_tgt_sess->se_sess != se_sess)
1314 qla_tgt_sess->se_sess = se_sess;
1315 if (nacl->qla_tgt_sess != qla_tgt_sess)
1316 nacl->qla_tgt_sess = qla_tgt_sess;
1320 if (new_se_nacl == NULL) {
1321 pr_debug("Clearing fc_loopid->se_nacl\n");
1322 fc_loopid->se_nacl = NULL;
1326 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1327 fc_loopid->se_nacl = new_se_nacl;
1328 if (qla_tgt_sess->se_sess != se_sess)
1329 qla_tgt_sess->se_sess = se_sess;
1330 if (nacl->qla_tgt_sess != qla_tgt_sess)
1331 nacl->qla_tgt_sess = qla_tgt_sess;
1333 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1334 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1338 * Should always be called with qla_hw_data->hardware_lock held.
1340 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1341 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1343 struct se_session *se_sess = sess->se_sess;
1344 unsigned char be_sid[3];
1346 be_sid[0] = sess->s_id.b.domain;
1347 be_sid[1] = sess->s_id.b.area;
1348 be_sid[2] = sess->s_id.b.al_pa;
1350 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1352 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1353 sess, sess->loop_id);
1356 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1358 struct qla_tgt *tgt = sess->tgt;
1359 struct qla_hw_data *ha = tgt->ha;
1360 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1361 struct se_session *se_sess;
1362 struct tcm_qla2xxx_lport *lport;
1364 BUG_ON(in_interrupt());
1366 se_sess = sess->se_sess;
1368 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1373 lport = vha->vha_tgt.target_lport_ptr;
1375 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1379 target_wait_for_sess_cmds(se_sess);
1381 transport_deregister_session_configfs(sess->se_sess);
1382 transport_deregister_session(sess->se_sess);
1386 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1387 * to locate struct se_node_acl
1389 static int tcm_qla2xxx_check_initiator_node_acl(
1390 scsi_qla_host_t *vha,
1391 unsigned char *fc_wwpn,
1396 struct qla_hw_data *ha = vha->hw;
1397 struct tcm_qla2xxx_lport *lport;
1398 struct tcm_qla2xxx_tpg *tpg;
1399 struct tcm_qla2xxx_nacl *nacl;
1400 struct se_portal_group *se_tpg;
1401 struct se_node_acl *se_nacl;
1402 struct se_session *se_sess;
1403 struct qla_tgt_sess *sess = qla_tgt_sess;
1404 unsigned char port_name[36];
1405 unsigned long flags;
1406 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1407 TCM_QLA2XXX_DEFAULT_TAGS;
1409 lport = vha->vha_tgt.target_lport_ptr;
1411 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1416 * Locate the TPG=1 reference..
1420 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1423 se_tpg = &tpg->se_tpg;
1425 se_sess = transport_init_session_tags(num_tags,
1426 sizeof(struct qla_tgt_cmd),
1428 if (IS_ERR(se_sess)) {
1429 pr_err("Unable to initialize struct se_session\n");
1430 return PTR_ERR(se_sess);
1433 * Format the FCP Initiator port_name into colon seperated values to
1434 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1436 memset(&port_name, 0, 36);
1437 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1439 * Locate our struct se_node_acl either from an explict NodeACL created
1440 * via ConfigFS, or via running in TPG demo mode.
1442 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1444 if (!se_sess->se_node_acl) {
1445 transport_free_session(se_sess);
1448 se_nacl = se_sess->se_node_acl;
1449 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1451 * And now setup the new se_nacl and session pointers into our HW lport
1452 * mappings for fabric S_ID and LOOP_ID.
1454 spin_lock_irqsave(&ha->hardware_lock, flags);
1455 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1456 qla_tgt_sess, s_id);
1457 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1458 qla_tgt_sess, loop_id);
1459 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1461 * Finally register the new FC Nexus with TCM
1463 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1468 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1469 uint16_t loop_id, bool conf_compl_supported)
1471 struct qla_tgt *tgt = sess->tgt;
1472 struct qla_hw_data *ha = tgt->ha;
1473 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1474 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1475 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1476 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1477 struct tcm_qla2xxx_nacl, se_node_acl);
1481 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1482 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1483 sess, sess->port_name,
1484 sess->loop_id, loop_id, sess->s_id.b.domain,
1485 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1486 s_id.b.area, s_id.b.al_pa);
1488 if (sess->loop_id != loop_id) {
1490 * Because we can shuffle loop IDs around and we
1491 * update different sessions non-atomically, we might
1492 * have overwritten this session's old loop ID
1493 * already, and we might end up overwriting some other
1494 * session that will be updated later. So we have to
1495 * be extra careful and we can't warn about those things...
1497 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1498 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1500 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1502 sess->loop_id = loop_id;
1505 if (sess->s_id.b24 != s_id.b24) {
1506 key = (((u32) sess->s_id.b.domain << 16) |
1507 ((u32) sess->s_id.b.area << 8) |
1508 ((u32) sess->s_id.b.al_pa));
1510 if (btree_lookup32(&lport->lport_fcport_map, key))
1511 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1512 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1513 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1515 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1516 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1518 key = (((u32) s_id.b.domain << 16) |
1519 ((u32) s_id.b.area << 8) |
1520 ((u32) s_id.b.al_pa));
1522 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1523 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1524 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1525 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1527 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1531 nacl->nport_id = key;
1534 sess->conf_compl_supported = conf_compl_supported;
1536 /* Reset logout parameters to default */
1537 sess->logout_on_delete = 1;
1538 sess->keep_nport_handle = 0;
1542 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1544 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1545 .handle_cmd = tcm_qla2xxx_handle_cmd,
1546 .handle_data = tcm_qla2xxx_handle_data,
1547 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1548 .handle_tmr = tcm_qla2xxx_handle_tmr,
1549 .free_cmd = tcm_qla2xxx_free_cmd,
1550 .free_mcmd = tcm_qla2xxx_free_mcmd,
1551 .free_session = tcm_qla2xxx_free_session,
1552 .update_sess = tcm_qla2xxx_update_sess,
1553 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1554 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1555 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1556 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1557 .put_sess = tcm_qla2xxx_put_sess,
1558 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1561 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1565 rc = btree_init32(&lport->lport_fcport_map);
1567 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1571 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1573 if (!lport->lport_loopid_map) {
1574 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1575 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1576 btree_destroy32(&lport->lport_fcport_map);
1579 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1581 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1582 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1586 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1587 void *target_lport_ptr,
1588 u64 npiv_wwpn, u64 npiv_wwnn)
1590 struct qla_hw_data *ha = vha->hw;
1591 struct tcm_qla2xxx_lport *lport =
1592 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1594 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1596 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1597 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1598 lport->qla_vha = vha;
1603 static struct se_wwn *tcm_qla2xxx_make_lport(
1604 struct target_fabric_configfs *tf,
1605 struct config_group *group,
1608 struct tcm_qla2xxx_lport *lport;
1612 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1613 return ERR_PTR(-EINVAL);
1615 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1617 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1618 return ERR_PTR(-ENOMEM);
1620 lport->lport_wwpn = wwpn;
1621 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1623 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1625 ret = tcm_qla2xxx_init_lport(lport);
1629 ret = qlt_lport_register(lport, wwpn, 0, 0,
1630 tcm_qla2xxx_lport_register_cb);
1634 return &lport->lport_wwn;
1636 vfree(lport->lport_loopid_map);
1637 btree_destroy32(&lport->lport_fcport_map);
1640 return ERR_PTR(ret);
1643 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1645 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1646 struct tcm_qla2xxx_lport, lport_wwn);
1647 struct scsi_qla_host *vha = lport->qla_vha;
1648 struct se_node_acl *node;
1652 * Call into qla2x_target.c LLD logic to complete the
1653 * shutdown of struct qla_tgt after the call to
1654 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1656 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1657 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1659 qlt_lport_deregister(vha);
1661 vfree(lport->lport_loopid_map);
1662 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1663 btree_remove32(&lport->lport_fcport_map, key);
1664 btree_destroy32(&lport->lport_fcport_map);
1668 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1669 void *target_lport_ptr,
1670 u64 npiv_wwpn, u64 npiv_wwnn)
1672 struct fc_vport *vport;
1673 struct Scsi_Host *sh = base_vha->host;
1674 struct scsi_qla_host *npiv_vha;
1675 struct tcm_qla2xxx_lport *lport =
1676 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1677 struct tcm_qla2xxx_lport *base_lport =
1678 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1679 struct fc_vport_identifiers vport_id;
1681 if (!qla_tgt_mode_enabled(base_vha)) {
1682 pr_err("qla2xxx base_vha not enabled for target mode\n");
1686 if (!base_lport || !base_lport->tpg_1 ||
1687 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1688 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1692 memset(&vport_id, 0, sizeof(vport_id));
1693 vport_id.port_name = npiv_wwpn;
1694 vport_id.node_name = npiv_wwnn;
1695 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1696 vport_id.vport_type = FC_PORTTYPE_NPIV;
1697 vport_id.disable = false;
1699 vport = fc_vport_create(sh, 0, &vport_id);
1701 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1705 * Setup local pointer to NPIV vhba + target_lport_ptr
1707 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1708 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1709 lport->qla_vha = npiv_vha;
1710 scsi_host_get(npiv_vha->host);
1715 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1716 struct target_fabric_configfs *tf,
1717 struct config_group *group,
1720 struct tcm_qla2xxx_lport *lport;
1721 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1725 snprintf(tmp, 128, "%s", name);
1727 p = strchr(tmp, '@');
1729 pr_err("Unable to locate NPIV '@' seperator\n");
1730 return ERR_PTR(-EINVAL);
1734 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1735 return ERR_PTR(-EINVAL);
1737 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1738 &npiv_wwpn, &npiv_wwnn) < 0)
1739 return ERR_PTR(-EINVAL);
1741 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1743 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1744 return ERR_PTR(-ENOMEM);
1746 lport->lport_npiv_wwpn = npiv_wwpn;
1747 lport->lport_npiv_wwnn = npiv_wwnn;
1748 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1750 ret = tcm_qla2xxx_init_lport(lport);
1754 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1755 tcm_qla2xxx_lport_register_npiv_cb);
1759 return &lport->lport_wwn;
1761 vfree(lport->lport_loopid_map);
1762 btree_destroy32(&lport->lport_fcport_map);
1765 return ERR_PTR(ret);
1768 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1770 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1771 struct tcm_qla2xxx_lport, lport_wwn);
1772 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1773 struct qla_hw_data *ha = npiv_vha->hw;
1774 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1776 scsi_host_put(npiv_vha->host);
1778 * Notify libfc that we want to release the vha->fc_vport
1780 fc_vport_terminate(npiv_vha->fc_vport);
1781 scsi_host_put(base_vha->host);
1786 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1787 struct target_fabric_configfs *tf,
1790 return sprintf(page,
1791 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1792 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1793 utsname()->machine);
1796 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1798 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1799 &tcm_qla2xxx_wwn_version.attr,
1803 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1804 .module = THIS_MODULE,
1806 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1808 * XXX: Limit assumes single page per scatter-gather-list entry.
1809 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1811 .max_data_sg_nents = 1200,
1812 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1813 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1814 .tpg_get_tag = tcm_qla2xxx_get_tag,
1815 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1816 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1817 .tpg_check_demo_mode_write_protect =
1818 tcm_qla2xxx_check_demo_write_protect,
1819 .tpg_check_prod_mode_write_protect =
1820 tcm_qla2xxx_check_prod_write_protect,
1821 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1822 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1823 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1824 .check_stop_free = tcm_qla2xxx_check_stop_free,
1825 .release_cmd = tcm_qla2xxx_release_cmd,
1826 .shutdown_session = tcm_qla2xxx_shutdown_session,
1827 .close_session = tcm_qla2xxx_close_session,
1828 .sess_get_index = tcm_qla2xxx_sess_get_index,
1829 .sess_get_initiator_sid = NULL,
1830 .write_pending = tcm_qla2xxx_write_pending,
1831 .write_pending_status = tcm_qla2xxx_write_pending_status,
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 .name = "qla2xxx_npiv",
1856 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1857 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1858 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1859 .tpg_get_tag = tcm_qla2xxx_get_tag,
1860 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1861 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1862 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1863 .tpg_check_prod_mode_write_protect =
1864 tcm_qla2xxx_check_prod_write_protect,
1865 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1866 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1867 .check_stop_free = tcm_qla2xxx_check_stop_free,
1868 .release_cmd = tcm_qla2xxx_release_cmd,
1869 .shutdown_session = tcm_qla2xxx_shutdown_session,
1870 .close_session = tcm_qla2xxx_close_session,
1871 .sess_get_index = tcm_qla2xxx_sess_get_index,
1872 .sess_get_initiator_sid = NULL,
1873 .write_pending = tcm_qla2xxx_write_pending,
1874 .write_pending_status = tcm_qla2xxx_write_pending_status,
1875 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1876 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1877 .queue_data_in = tcm_qla2xxx_queue_data_in,
1878 .queue_status = tcm_qla2xxx_queue_status,
1879 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1880 .aborted_task = tcm_qla2xxx_aborted_task,
1882 * Setup function pointers for generic logic in
1883 * target_core_fabric_configfs.c
1885 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1886 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1887 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1888 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1889 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1891 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1892 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1895 static int tcm_qla2xxx_register_configfs(void)
1899 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1900 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1901 utsname()->machine);
1903 ret = target_register_template(&tcm_qla2xxx_ops);
1907 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1911 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1913 if (!tcm_qla2xxx_free_wq) {
1915 goto out_fabric_npiv;
1918 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1919 if (!tcm_qla2xxx_cmd_wq) {
1927 destroy_workqueue(tcm_qla2xxx_free_wq);
1929 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1931 target_unregister_template(&tcm_qla2xxx_ops);
1935 static void tcm_qla2xxx_deregister_configfs(void)
1937 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1938 destroy_workqueue(tcm_qla2xxx_free_wq);
1940 target_unregister_template(&tcm_qla2xxx_ops);
1941 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1944 static int __init tcm_qla2xxx_init(void)
1948 ret = tcm_qla2xxx_register_configfs();
1955 static void __exit tcm_qla2xxx_exit(void)
1957 tcm_qla2xxx_deregister_configfs();
1960 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1961 MODULE_LICENSE("GPL");
1962 module_init(tcm_qla2xxx_init);
1963 module_exit(tcm_qla2xxx_exit);