1 /*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
5 * (c) Copyright 2010-2013 Datera, Inc.
7 * Author: Nicholas A. Bellinger <nab@daterainc.com>
9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
10 * the TCM_FC / Open-FCoE.org fabric module.
12 * Copyright (c) 2010 Cisco Systems, Inc
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 ****************************************************************************/
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <generated/utsrelease.h>
29 #include <linux/utsname.h>
30 #include <linux/vmalloc.h>
31 #include <linux/init.h>
32 #include <linux/list.h>
33 #include <linux/slab.h>
34 #include <linux/kthread.h>
35 #include <linux/types.h>
36 #include <linux/string.h>
37 #include <linux/configfs.h>
38 #include <linux/ctype.h>
39 #include <asm/unaligned.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_device.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <target/target_core_base.h>
45 #include <target/target_core_fabric.h>
48 #include "qla_target.h"
49 #include "tcm_qla2xxx.h"
51 static struct workqueue_struct *tcm_qla2xxx_free_wq;
52 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
56 * If strict, we require lower-case hex and colon separators to be sure
57 * the name is the same as what would be generated by ft_format_wwn()
58 * so the name and wwn are mapped one-to-one.
60 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
70 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
72 if (c == '\n' && cp[1] == '\0')
74 if (strict && pos++ == 2 && byte++ < 7) {
83 if (strict && byte != 8)
90 else if (isxdigit(c) && (islower(c) || !strict))
91 nibble = tolower(c) - 'a' + 10;
94 *wwn = (*wwn << 4) | nibble;
98 pr_debug("err %u len %zu pos %u byte %u\n",
99 err, cp - name, pos, byte);
103 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
107 put_unaligned_be64(wwn, b);
108 return snprintf(buf, len,
109 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
110 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
113 static char *tcm_qla2xxx_get_fabric_name(void)
119 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
121 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
126 memset(wwn, 0, sizeof(wwn));
128 /* Validate and store the new name */
129 for (i = 0, j = 0; i < 16; i++) {
132 value = hex_to_bin(*ns++);
134 j = (j << 4) | value;
144 *nm = wwn_to_u64(wwn);
149 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
150 * store_fc_host_vport_create()
152 static int tcm_qla2xxx_npiv_parse_wwn(
158 unsigned int cnt = count;
164 /* count may include a LF at end of string */
165 if (name[cnt-1] == '\n' || name[cnt-1] == 0)
168 /* validate we have enough characters for WWPN */
169 if ((cnt != (16+1+16)) || (name[16] != ':'))
172 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
176 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
183 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
185 return "qla2xxx_npiv";
188 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
190 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
191 struct tcm_qla2xxx_tpg, se_tpg);
192 struct tcm_qla2xxx_lport *lport = tpg->lport;
194 return lport->lport_naa_name;
197 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
199 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
200 struct tcm_qla2xxx_tpg, se_tpg);
201 return tpg->lport_tpgt;
204 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
206 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
207 struct tcm_qla2xxx_tpg, se_tpg);
209 return tpg->tpg_attrib.generate_node_acls;
212 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
214 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
215 struct tcm_qla2xxx_tpg, se_tpg);
217 return tpg->tpg_attrib.cache_dynamic_acls;
220 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
223 struct tcm_qla2xxx_tpg, se_tpg);
225 return tpg->tpg_attrib.demo_mode_write_protect;
228 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
230 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
231 struct tcm_qla2xxx_tpg, se_tpg);
233 return tpg->tpg_attrib.prod_mode_write_protect;
236 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
239 struct tcm_qla2xxx_tpg, se_tpg);
241 return tpg->tpg_attrib.demo_mode_login_only;
244 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
246 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
247 struct tcm_qla2xxx_tpg, se_tpg);
249 return tpg->tpg_attrib.fabric_prot_type;
252 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
257 return tpg->lport_tpgt;
260 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
262 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
263 struct qla_tgt_mgmt_cmd, free_work);
265 transport_generic_free_cmd(&mcmd->se_cmd, 0);
269 * Called from qla_target_template->free_mcmd(), and will call
270 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
271 * release callback. qla_hw_data->hardware_lock is expected to be held
273 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
275 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
276 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
279 static void tcm_qla2xxx_complete_free(struct work_struct *work)
281 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
285 WARN_ON(cmd->cmd_flags & BIT_16);
287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
288 cmd->cmd_flags |= BIT_16;
289 transport_generic_free_cmd(&cmd->se_cmd, 0);
293 * Called from qla_target_template->free_cmd(), and will call
294 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
295 * release callback. qla_hw_data->hardware_lock is expected to be held
297 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
299 cmd->vha->tgt_counters.core_qla_free_cmd++;
302 BUG_ON(cmd->cmd_flags & BIT_20);
303 cmd->cmd_flags |= BIT_20;
305 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
306 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
310 * Called from struct target_core_fabric_ops->check_stop_free() context
312 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
314 struct qla_tgt_cmd *cmd;
316 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
317 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
318 cmd->cmd_flags |= BIT_14;
321 return target_put_sess_cmd(se_cmd);
324 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
325 * fabric descriptor @se_cmd command to release
327 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
329 struct qla_tgt_cmd *cmd;
331 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
332 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
333 struct qla_tgt_mgmt_cmd, se_cmd);
338 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
342 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
344 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
345 struct scsi_qla_host *vha;
351 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
352 target_sess_cmd_list_set_waiting(se_sess);
354 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
357 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
362 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
364 struct qla_tgt_cmd *cmd = container_of(se_cmd,
365 struct qla_tgt_cmd, se_cmd);
368 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
369 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
370 * already kick start the free.
372 pr_debug("write_pending aborted cmd[%p] refcount %d "
373 "transport_state %x, t_state %x, se_cmd_flags %x\n",
374 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
375 cmd->se_cmd.transport_state,
377 cmd->se_cmd.se_cmd_flags);
380 cmd->cmd_flags |= BIT_3;
381 cmd->bufflen = se_cmd->data_length;
382 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
384 cmd->sg_cnt = se_cmd->t_data_nents;
385 cmd->sg = se_cmd->t_data_sg;
387 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
388 cmd->prot_sg = se_cmd->t_prot_sg;
389 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
393 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
394 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
396 return qlt_rdy_to_xfer(cmd);
399 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
403 * Check for WRITE_PENDING status to determine if we need to wait for
404 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
406 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
407 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
408 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
409 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
410 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
414 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
419 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
424 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
426 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
427 struct qla_tgt_cmd *cmd = container_of(se_cmd,
428 struct qla_tgt_cmd, se_cmd);
436 * Called from process context in qla_target.c:qlt_do_work() code
438 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
439 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
440 int data_dir, int bidi)
442 struct se_cmd *se_cmd = &cmd->se_cmd;
443 struct se_session *se_sess;
444 struct qla_tgt_sess *sess;
445 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
446 struct se_portal_group *se_tpg;
447 struct tcm_qla2xxx_tpg *tpg;
449 int flags = TARGET_SCF_ACK_KREF;
452 flags |= TARGET_SCF_BIDI_OP;
454 if (se_cmd->cpuid != WORK_CPU_UNBOUND)
455 flags |= TARGET_SCF_USE_CPUID;
459 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
463 se_sess = sess->se_sess;
465 pr_err("Unable to locate active struct se_session\n");
469 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
470 se_tpg = se_sess->se_tpg;
471 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
472 if (unlikely(tpg->tpg_attrib.jam_host)) {
473 /* return, and dont run target_submit_cmd,discarding command */
478 cmd->vha->tgt_counters.qla_core_sbt_cmd++;
479 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
480 cmd->unpacked_lun, data_length, fcp_task_attr,
484 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
486 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
489 * Ensure that the complete FCP WRITE payload has been received.
490 * Otherwise return an exception via CHECK_CONDITION status.
494 cmd->vha->tgt_counters.qla_core_ret_ctio++;
495 if (!cmd->write_data_transferred) {
497 * Check if se_cmd has already been aborted via LUN_RESET, and
498 * waiting upon completion in tcm_qla2xxx_write_pending_status()
500 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
501 complete(&cmd->se_cmd.t_transport_stop_comp);
505 if (cmd->se_cmd.pi_err)
506 transport_generic_request_failure(&cmd->se_cmd,
509 transport_generic_request_failure(&cmd->se_cmd,
510 TCM_CHECK_CONDITION_ABORT_CMD);
515 return target_execute_cmd(&cmd->se_cmd);
519 * Called from qla_target.c:qlt_do_ctio_completion()
521 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
523 cmd->cmd_flags |= BIT_10;
525 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
526 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
529 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
531 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
533 /* take an extra kref to prevent cmd free too early.
534 * need to wait for SCSI status/check condition to
535 * finish responding generate by transport_generic_request_failure.
537 kref_get(&cmd->se_cmd.cmd_kref);
538 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
542 * Called from qla_target.c:qlt_do_ctio_completion()
544 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
546 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
547 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
551 * Called from qla_target.c:qlt_issue_task_mgmt()
553 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
554 uint8_t tmr_func, uint32_t tag)
556 struct qla_tgt_sess *sess = mcmd->sess;
557 struct se_cmd *se_cmd = &mcmd->se_cmd;
559 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
560 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
563 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
565 struct qla_tgt_cmd *cmd = container_of(se_cmd,
566 struct qla_tgt_cmd, se_cmd);
569 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
570 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
571 * already kick start the free.
573 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
574 "transport_state %x, t_state %x, se_cmd_flags %x\n",
575 cmd,cmd->se_cmd.cmd_kref.refcount.counter,
576 cmd->se_cmd.transport_state,
578 cmd->se_cmd.se_cmd_flags);
582 cmd->cmd_flags |= BIT_4;
583 cmd->bufflen = se_cmd->data_length;
584 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
586 cmd->sg_cnt = se_cmd->t_data_nents;
587 cmd->sg = se_cmd->t_data_sg;
590 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
591 cmd->prot_sg = se_cmd->t_prot_sg;
592 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
596 * Now queue completed DATA_IN the qla2xxx LLD and response ring
598 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
599 se_cmd->scsi_status);
602 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
604 struct qla_tgt_cmd *cmd = container_of(se_cmd,
605 struct qla_tgt_cmd, se_cmd);
606 int xmit_type = QLA_TGT_XMIT_STATUS;
608 cmd->bufflen = se_cmd->data_length;
612 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
613 if (cmd->cmd_flags & BIT_5) {
614 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
617 cmd->cmd_flags |= BIT_5;
619 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
621 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
622 * for qla_tgt_xmit_response LLD code
624 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
625 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
626 se_cmd->residual_count = 0;
628 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
629 se_cmd->residual_count += se_cmd->data_length;
634 * Now queue status response to qla2xxx LLD code and response ring
636 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
639 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
641 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
642 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
643 struct qla_tgt_mgmt_cmd, se_cmd);
645 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
646 mcmd, se_tmr->function, se_tmr->response);
648 * Do translation between TCM TM response codes and
649 * QLA2xxx FC TM response codes.
651 switch (se_tmr->response) {
652 case TMR_FUNCTION_COMPLETE:
653 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
655 case TMR_TASK_DOES_NOT_EXIST:
656 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
658 case TMR_FUNCTION_REJECTED:
659 mcmd->fc_tm_rsp = FC_TM_REJECT;
661 case TMR_LUN_DOES_NOT_EXIST:
663 mcmd->fc_tm_rsp = FC_TM_FAILED;
667 * Queue the TM response to QLA2xxx LLD to build a
668 * CTIO response packet.
670 qlt_xmit_tm_rsp(mcmd);
673 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
675 struct qla_tgt_cmd *cmd = container_of(se_cmd,
676 struct qla_tgt_cmd, se_cmd);
678 if (qlt_abort_cmd(cmd))
682 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
683 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
685 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
687 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
689 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
690 struct se_portal_group *se_tpg = se_nacl->se_tpg;
691 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
692 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
693 struct tcm_qla2xxx_lport, lport_wwn);
694 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
695 struct tcm_qla2xxx_nacl, se_node_acl);
698 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
700 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
701 if (WARN_ON(node && (node != se_nacl))) {
703 * The nacl no longer matches what we think it should be.
704 * Most likely a new dynamic acl has been added while
705 * someone dropped the hardware lock. It clearly is a
706 * bug elsewhere, but this bit can't make things worse.
708 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
712 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
713 se_nacl, nacl->nport_wwnn, nacl->nport_id);
715 * Now clear the se_nacl and session pointers from our HW lport lookup
716 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
718 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
719 * target_wait_for_sess_cmds() before the session waits for outstanding
720 * I/O to complete, to avoid a race between session shutdown execution
721 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
723 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
726 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
728 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
729 target_sess_cmd_list_set_waiting(sess->se_sess);
732 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
735 struct tcm_qla2xxx_nacl *nacl =
736 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
739 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
742 nacl->nport_wwnn = wwnn;
743 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
748 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
750 #define DEF_QLA_TPG_ATTRIB(name) \
752 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
753 struct config_item *item, char *page) \
755 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
756 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
757 struct tcm_qla2xxx_tpg, se_tpg); \
759 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
762 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
763 struct config_item *item, const char *page, size_t count) \
765 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
766 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
767 struct tcm_qla2xxx_tpg, se_tpg); \
768 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
772 ret = kstrtoul(page, 0, &val); \
774 pr_err("kstrtoul() failed with" \
775 " ret: %d\n", ret); \
779 if ((val != 0) && (val != 1)) { \
780 pr_err("Illegal boolean value %lu\n", val); \
788 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
790 DEF_QLA_TPG_ATTRIB(generate_node_acls);
791 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
792 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
793 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
794 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
795 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
796 DEF_QLA_TPG_ATTRIB(jam_host);
799 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
800 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
801 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
802 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
803 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
804 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
805 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
806 &tcm_qla2xxx_tpg_attrib_attr_jam_host,
811 /* End items for tcm_qla2xxx_tpg_attrib_cit */
813 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
816 struct se_portal_group *se_tpg = to_tpg(item);
817 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
818 struct tcm_qla2xxx_tpg, se_tpg);
820 return snprintf(page, PAGE_SIZE, "%d\n",
821 atomic_read(&tpg->lport_tpg_enabled));
824 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
825 const char *page, size_t count)
827 struct se_portal_group *se_tpg = to_tpg(item);
828 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
829 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
830 struct tcm_qla2xxx_lport, lport_wwn);
831 struct scsi_qla_host *vha = lport->qla_vha;
832 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
833 struct tcm_qla2xxx_tpg, se_tpg);
837 rc = kstrtoul(page, 0, &op);
839 pr_err("kstrtoul() returned %d\n", rc);
842 if ((op != 1) && (op != 0)) {
843 pr_err("Illegal value for tpg_enable: %lu\n", op);
847 if (atomic_read(&tpg->lport_tpg_enabled))
850 atomic_set(&tpg->lport_tpg_enabled, 1);
853 if (!atomic_read(&tpg->lport_tpg_enabled))
856 atomic_set(&tpg->lport_tpg_enabled, 0);
857 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
858 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
864 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
867 return target_show_dynamic_sessions(to_tpg(item), page);
870 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
871 const char *page, size_t count)
873 struct se_portal_group *se_tpg = to_tpg(item);
874 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
875 struct tcm_qla2xxx_tpg, se_tpg);
877 int ret = kstrtoul(page, 0, &val);
880 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
883 if (val != 0 && val != 1 && val != 3) {
884 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
887 tpg->tpg_attrib.fabric_prot_type = val;
892 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
895 struct se_portal_group *se_tpg = to_tpg(item);
896 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
897 struct tcm_qla2xxx_tpg, se_tpg);
899 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
902 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
903 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
904 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
906 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
907 &tcm_qla2xxx_tpg_attr_enable,
908 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
909 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
913 static struct se_portal_group *tcm_qla2xxx_make_tpg(
915 struct config_group *group,
918 struct tcm_qla2xxx_lport *lport = container_of(wwn,
919 struct tcm_qla2xxx_lport, lport_wwn);
920 struct tcm_qla2xxx_tpg *tpg;
924 if (strstr(name, "tpgt_") != name)
925 return ERR_PTR(-EINVAL);
926 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
927 return ERR_PTR(-EINVAL);
930 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
931 return ERR_PTR(-ENOSYS);
934 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
936 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
937 return ERR_PTR(-ENOMEM);
940 tpg->lport_tpgt = tpgt;
942 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
945 tpg->tpg_attrib.generate_node_acls = 1;
946 tpg->tpg_attrib.demo_mode_write_protect = 1;
947 tpg->tpg_attrib.cache_dynamic_acls = 1;
948 tpg->tpg_attrib.demo_mode_login_only = 1;
949 tpg->tpg_attrib.jam_host = 0;
951 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
962 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
965 struct tcm_qla2xxx_tpg, se_tpg);
966 struct tcm_qla2xxx_lport *lport = tpg->lport;
967 struct scsi_qla_host *vha = lport->qla_vha;
969 * Call into qla2x_target.c LLD logic to shutdown the active
970 * FC Nexuses and disable target mode operation for this qla_hw_data
972 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
973 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
975 core_tpg_deregister(se_tpg);
977 * Clear local TPG=1 pointer for non NPIV mode.
983 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
986 return tcm_qla2xxx_tpg_enable_show(item, page);
989 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
990 const char *page, size_t count)
992 struct se_portal_group *se_tpg = to_tpg(item);
993 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
994 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
995 struct tcm_qla2xxx_lport, lport_wwn);
996 struct scsi_qla_host *vha = lport->qla_vha;
997 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
998 struct tcm_qla2xxx_tpg, se_tpg);
1002 rc = kstrtoul(page, 0, &op);
1004 pr_err("kstrtoul() returned %d\n", rc);
1007 if ((op != 1) && (op != 0)) {
1008 pr_err("Illegal value for tpg_enable: %lu\n", op);
1012 if (atomic_read(&tpg->lport_tpg_enabled))
1015 atomic_set(&tpg->lport_tpg_enabled, 1);
1016 qlt_enable_vha(vha);
1018 if (!atomic_read(&tpg->lport_tpg_enabled))
1021 atomic_set(&tpg->lport_tpg_enabled, 0);
1022 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1023 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1029 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1031 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1032 &tcm_qla2xxx_npiv_tpg_attr_enable,
1036 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1038 struct config_group *group,
1041 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1042 struct tcm_qla2xxx_lport, lport_wwn);
1043 struct tcm_qla2xxx_tpg *tpg;
1047 if (strstr(name, "tpgt_") != name)
1048 return ERR_PTR(-EINVAL);
1049 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1050 return ERR_PTR(-EINVAL);
1052 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1054 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1055 return ERR_PTR(-ENOMEM);
1058 tpg->lport_tpgt = tpgt;
1061 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1064 tpg->tpg_attrib.generate_node_acls = 1;
1065 tpg->tpg_attrib.demo_mode_write_protect = 1;
1066 tpg->tpg_attrib.cache_dynamic_acls = 1;
1067 tpg->tpg_attrib.demo_mode_login_only = 1;
1069 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1075 return &tpg->se_tpg;
1079 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1081 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1082 scsi_qla_host_t *vha,
1083 const uint8_t *s_id)
1085 struct tcm_qla2xxx_lport *lport;
1086 struct se_node_acl *se_nacl;
1087 struct tcm_qla2xxx_nacl *nacl;
1090 lport = vha->vha_tgt.target_lport_ptr;
1092 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1097 key = sid_to_key(s_id);
1098 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1100 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1102 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1105 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1106 se_nacl, se_nacl->initiatorname);
1108 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1109 if (!nacl->qla_tgt_sess) {
1110 pr_err("Unable to locate struct qla_tgt_sess\n");
1114 return nacl->qla_tgt_sess;
1118 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1120 static void tcm_qla2xxx_set_sess_by_s_id(
1121 struct tcm_qla2xxx_lport *lport,
1122 struct se_node_acl *new_se_nacl,
1123 struct tcm_qla2xxx_nacl *nacl,
1124 struct se_session *se_sess,
1125 struct qla_tgt_sess *qla_tgt_sess,
1132 key = sid_to_key(s_id);
1133 pr_debug("set_sess_by_s_id: %06x\n", key);
1135 slot = btree_lookup32(&lport->lport_fcport_map, key);
1138 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1139 nacl->nport_id = key;
1140 rc = btree_insert32(&lport->lport_fcport_map, key,
1141 new_se_nacl, GFP_ATOMIC);
1143 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1146 pr_debug("Wiping nonexisting fc_port entry\n");
1149 qla_tgt_sess->se_sess = se_sess;
1150 nacl->qla_tgt_sess = qla_tgt_sess;
1154 if (nacl->qla_tgt_sess) {
1155 if (new_se_nacl == NULL) {
1156 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1157 btree_remove32(&lport->lport_fcport_map, key);
1158 nacl->qla_tgt_sess = NULL;
1161 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1162 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1163 qla_tgt_sess->se_sess = se_sess;
1164 nacl->qla_tgt_sess = qla_tgt_sess;
1168 if (new_se_nacl == NULL) {
1169 pr_debug("Clearing existing fc_port entry\n");
1170 btree_remove32(&lport->lport_fcport_map, key);
1174 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1175 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1176 qla_tgt_sess->se_sess = se_sess;
1177 nacl->qla_tgt_sess = qla_tgt_sess;
1179 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1180 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1184 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1186 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1187 scsi_qla_host_t *vha,
1188 const uint16_t loop_id)
1190 struct tcm_qla2xxx_lport *lport;
1191 struct se_node_acl *se_nacl;
1192 struct tcm_qla2xxx_nacl *nacl;
1193 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1195 lport = vha->vha_tgt.target_lport_ptr;
1197 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1202 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1204 fc_loopid = lport->lport_loopid_map + loop_id;
1205 se_nacl = fc_loopid->se_nacl;
1207 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1212 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1214 if (!nacl->qla_tgt_sess) {
1215 pr_err("Unable to locate struct qla_tgt_sess\n");
1219 return nacl->qla_tgt_sess;
1223 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1225 static void tcm_qla2xxx_set_sess_by_loop_id(
1226 struct tcm_qla2xxx_lport *lport,
1227 struct se_node_acl *new_se_nacl,
1228 struct tcm_qla2xxx_nacl *nacl,
1229 struct se_session *se_sess,
1230 struct qla_tgt_sess *qla_tgt_sess,
1233 struct se_node_acl *saved_nacl;
1234 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1236 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1238 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1239 lport->lport_loopid_map)[loop_id];
1241 saved_nacl = fc_loopid->se_nacl;
1243 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1244 fc_loopid->se_nacl = new_se_nacl;
1245 if (qla_tgt_sess->se_sess != se_sess)
1246 qla_tgt_sess->se_sess = se_sess;
1247 if (nacl->qla_tgt_sess != qla_tgt_sess)
1248 nacl->qla_tgt_sess = qla_tgt_sess;
1252 if (nacl->qla_tgt_sess) {
1253 if (new_se_nacl == NULL) {
1254 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1255 fc_loopid->se_nacl = NULL;
1256 nacl->qla_tgt_sess = NULL;
1260 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1261 fc_loopid->se_nacl = new_se_nacl;
1262 if (qla_tgt_sess->se_sess != se_sess)
1263 qla_tgt_sess->se_sess = se_sess;
1264 if (nacl->qla_tgt_sess != qla_tgt_sess)
1265 nacl->qla_tgt_sess = qla_tgt_sess;
1269 if (new_se_nacl == NULL) {
1270 pr_debug("Clearing fc_loopid->se_nacl\n");
1271 fc_loopid->se_nacl = NULL;
1275 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1276 fc_loopid->se_nacl = new_se_nacl;
1277 if (qla_tgt_sess->se_sess != se_sess)
1278 qla_tgt_sess->se_sess = se_sess;
1279 if (nacl->qla_tgt_sess != qla_tgt_sess)
1280 nacl->qla_tgt_sess = qla_tgt_sess;
1282 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1283 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1287 * Should always be called with qla_hw_data->tgt.sess_lock held.
1289 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1290 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1292 struct se_session *se_sess = sess->se_sess;
1293 unsigned char be_sid[3];
1295 be_sid[0] = sess->s_id.b.domain;
1296 be_sid[1] = sess->s_id.b.area;
1297 be_sid[2] = sess->s_id.b.al_pa;
1299 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1301 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1302 sess, sess->loop_id);
1305 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1307 struct qla_tgt *tgt = sess->tgt;
1308 struct qla_hw_data *ha = tgt->ha;
1309 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1310 struct se_session *se_sess;
1311 struct tcm_qla2xxx_lport *lport;
1313 BUG_ON(in_interrupt());
1315 se_sess = sess->se_sess;
1317 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1322 lport = vha->vha_tgt.target_lport_ptr;
1324 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1328 target_wait_for_sess_cmds(se_sess);
1330 transport_deregister_session_configfs(sess->se_sess);
1331 transport_deregister_session(sess->se_sess);
1334 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1335 struct se_session *se_sess, void *p)
1337 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1338 struct tcm_qla2xxx_tpg, se_tpg);
1339 struct tcm_qla2xxx_lport *lport = tpg->lport;
1340 struct qla_hw_data *ha = lport->qla_vha->hw;
1341 struct se_node_acl *se_nacl = se_sess->se_node_acl;
1342 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1343 struct tcm_qla2xxx_nacl, se_node_acl);
1344 struct qla_tgt_sess *qlat_sess = p;
1345 uint16_t loop_id = qlat_sess->loop_id;
1346 unsigned long flags;
1347 unsigned char be_sid[3];
1349 be_sid[0] = qlat_sess->s_id.b.domain;
1350 be_sid[1] = qlat_sess->s_id.b.area;
1351 be_sid[2] = qlat_sess->s_id.b.al_pa;
1354 * And now setup se_nacl and session pointers into HW lport internal
1355 * mappings for fabric S_ID and LOOP_ID.
1357 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1358 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl,
1359 se_sess, qlat_sess, be_sid);
1360 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1361 se_sess, qlat_sess, loop_id);
1362 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1368 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1369 * to locate struct se_node_acl
1371 static int tcm_qla2xxx_check_initiator_node_acl(
1372 scsi_qla_host_t *vha,
1373 unsigned char *fc_wwpn,
1374 struct qla_tgt_sess *qlat_sess)
1376 struct qla_hw_data *ha = vha->hw;
1377 struct tcm_qla2xxx_lport *lport;
1378 struct tcm_qla2xxx_tpg *tpg;
1379 struct se_session *se_sess;
1380 unsigned char port_name[36];
1381 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1382 TCM_QLA2XXX_DEFAULT_TAGS;
1384 lport = vha->vha_tgt.target_lport_ptr;
1386 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1391 * Locate the TPG=1 reference..
1395 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1399 * Format the FCP Initiator port_name into colon seperated values to
1400 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1402 memset(&port_name, 0, 36);
1403 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1405 * Locate our struct se_node_acl either from an explict NodeACL created
1406 * via ConfigFS, or via running in TPG demo mode.
1408 se_sess = target_alloc_session(&tpg->se_tpg, num_tags,
1409 sizeof(struct qla_tgt_cmd),
1410 TARGET_PROT_ALL, port_name,
1411 qlat_sess, tcm_qla2xxx_session_cb);
1412 if (IS_ERR(se_sess))
1413 return PTR_ERR(se_sess);
1418 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1419 uint16_t loop_id, bool conf_compl_supported)
1421 struct qla_tgt *tgt = sess->tgt;
1422 struct qla_hw_data *ha = tgt->ha;
1423 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1424 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1425 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1426 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1427 struct tcm_qla2xxx_nacl, se_node_acl);
1431 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1432 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1433 sess, sess->port_name,
1434 sess->loop_id, loop_id, sess->s_id.b.domain,
1435 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1436 s_id.b.area, s_id.b.al_pa);
1438 if (sess->loop_id != loop_id) {
1440 * Because we can shuffle loop IDs around and we
1441 * update different sessions non-atomically, we might
1442 * have overwritten this session's old loop ID
1443 * already, and we might end up overwriting some other
1444 * session that will be updated later. So we have to
1445 * be extra careful and we can't warn about those things...
1447 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1448 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1450 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1452 sess->loop_id = loop_id;
1455 if (sess->s_id.b24 != s_id.b24) {
1456 key = (((u32) sess->s_id.b.domain << 16) |
1457 ((u32) sess->s_id.b.area << 8) |
1458 ((u32) sess->s_id.b.al_pa));
1460 if (btree_lookup32(&lport->lport_fcport_map, key))
1461 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1462 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1463 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1465 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1466 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1468 key = (((u32) s_id.b.domain << 16) |
1469 ((u32) s_id.b.area << 8) |
1470 ((u32) s_id.b.al_pa));
1472 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1473 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1474 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1475 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1477 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1481 nacl->nport_id = key;
1484 sess->conf_compl_supported = conf_compl_supported;
1486 /* Reset logout parameters to default */
1487 sess->logout_on_delete = 1;
1488 sess->keep_nport_handle = 0;
1492 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1494 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1495 .handle_cmd = tcm_qla2xxx_handle_cmd,
1496 .handle_data = tcm_qla2xxx_handle_data,
1497 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1498 .handle_tmr = tcm_qla2xxx_handle_tmr,
1499 .free_cmd = tcm_qla2xxx_free_cmd,
1500 .free_mcmd = tcm_qla2xxx_free_mcmd,
1501 .free_session = tcm_qla2xxx_free_session,
1502 .update_sess = tcm_qla2xxx_update_sess,
1503 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1504 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1505 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1506 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1507 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1510 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1514 rc = btree_init32(&lport->lport_fcport_map);
1516 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1520 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1522 if (!lport->lport_loopid_map) {
1523 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1524 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1525 btree_destroy32(&lport->lport_fcport_map);
1528 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1530 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1531 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1535 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1536 void *target_lport_ptr,
1537 u64 npiv_wwpn, u64 npiv_wwnn)
1539 struct qla_hw_data *ha = vha->hw;
1540 struct tcm_qla2xxx_lport *lport =
1541 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1543 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1545 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1546 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1547 lport->qla_vha = vha;
1552 static struct se_wwn *tcm_qla2xxx_make_lport(
1553 struct target_fabric_configfs *tf,
1554 struct config_group *group,
1557 struct tcm_qla2xxx_lport *lport;
1561 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1562 return ERR_PTR(-EINVAL);
1564 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1566 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1567 return ERR_PTR(-ENOMEM);
1569 lport->lport_wwpn = wwpn;
1570 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1572 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1574 ret = tcm_qla2xxx_init_lport(lport);
1578 ret = qlt_lport_register(lport, wwpn, 0, 0,
1579 tcm_qla2xxx_lport_register_cb);
1583 return &lport->lport_wwn;
1585 vfree(lport->lport_loopid_map);
1586 btree_destroy32(&lport->lport_fcport_map);
1589 return ERR_PTR(ret);
1592 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1594 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1595 struct tcm_qla2xxx_lport, lport_wwn);
1596 struct scsi_qla_host *vha = lport->qla_vha;
1597 struct se_node_acl *node;
1601 * Call into qla2x_target.c LLD logic to complete the
1602 * shutdown of struct qla_tgt after the call to
1603 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1605 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1606 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1608 qlt_lport_deregister(vha);
1610 vfree(lport->lport_loopid_map);
1611 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1612 btree_remove32(&lport->lport_fcport_map, key);
1613 btree_destroy32(&lport->lport_fcport_map);
1617 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1618 void *target_lport_ptr,
1619 u64 npiv_wwpn, u64 npiv_wwnn)
1621 struct fc_vport *vport;
1622 struct Scsi_Host *sh = base_vha->host;
1623 struct scsi_qla_host *npiv_vha;
1624 struct tcm_qla2xxx_lport *lport =
1625 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1626 struct tcm_qla2xxx_lport *base_lport =
1627 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1628 struct fc_vport_identifiers vport_id;
1630 if (!qla_tgt_mode_enabled(base_vha)) {
1631 pr_err("qla2xxx base_vha not enabled for target mode\n");
1635 if (!base_lport || !base_lport->tpg_1 ||
1636 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1637 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1641 memset(&vport_id, 0, sizeof(vport_id));
1642 vport_id.port_name = npiv_wwpn;
1643 vport_id.node_name = npiv_wwnn;
1644 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1645 vport_id.vport_type = FC_PORTTYPE_NPIV;
1646 vport_id.disable = false;
1648 vport = fc_vport_create(sh, 0, &vport_id);
1650 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1654 * Setup local pointer to NPIV vhba + target_lport_ptr
1656 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1657 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1658 lport->qla_vha = npiv_vha;
1659 scsi_host_get(npiv_vha->host);
1664 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1665 struct target_fabric_configfs *tf,
1666 struct config_group *group,
1669 struct tcm_qla2xxx_lport *lport;
1670 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1674 snprintf(tmp, 128, "%s", name);
1676 p = strchr(tmp, '@');
1678 pr_err("Unable to locate NPIV '@' seperator\n");
1679 return ERR_PTR(-EINVAL);
1683 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1684 return ERR_PTR(-EINVAL);
1686 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1687 &npiv_wwpn, &npiv_wwnn) < 0)
1688 return ERR_PTR(-EINVAL);
1690 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1692 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1693 return ERR_PTR(-ENOMEM);
1695 lport->lport_npiv_wwpn = npiv_wwpn;
1696 lport->lport_npiv_wwnn = npiv_wwnn;
1697 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1699 ret = tcm_qla2xxx_init_lport(lport);
1703 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1704 tcm_qla2xxx_lport_register_npiv_cb);
1708 return &lport->lport_wwn;
1710 vfree(lport->lport_loopid_map);
1711 btree_destroy32(&lport->lport_fcport_map);
1714 return ERR_PTR(ret);
1717 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1719 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1720 struct tcm_qla2xxx_lport, lport_wwn);
1721 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1722 struct qla_hw_data *ha = npiv_vha->hw;
1723 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1725 scsi_host_put(npiv_vha->host);
1727 * Notify libfc that we want to release the vha->fc_vport
1729 fc_vport_terminate(npiv_vha->fc_vport);
1730 scsi_host_put(base_vha->host);
1735 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1738 return sprintf(page,
1739 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1740 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1741 utsname()->machine);
1744 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1746 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1747 &tcm_qla2xxx_wwn_attr_version,
1751 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1752 .module = THIS_MODULE,
1754 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1756 * XXX: Limit assumes single page per scatter-gather-list entry.
1757 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1759 .max_data_sg_nents = 1200,
1760 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1761 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1762 .tpg_get_tag = tcm_qla2xxx_get_tag,
1763 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1764 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1765 .tpg_check_demo_mode_write_protect =
1766 tcm_qla2xxx_check_demo_write_protect,
1767 .tpg_check_prod_mode_write_protect =
1768 tcm_qla2xxx_check_prod_write_protect,
1769 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1770 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1771 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1772 .check_stop_free = tcm_qla2xxx_check_stop_free,
1773 .release_cmd = tcm_qla2xxx_release_cmd,
1774 .close_session = tcm_qla2xxx_close_session,
1775 .sess_get_index = tcm_qla2xxx_sess_get_index,
1776 .sess_get_initiator_sid = NULL,
1777 .write_pending = tcm_qla2xxx_write_pending,
1778 .write_pending_status = tcm_qla2xxx_write_pending_status,
1779 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1780 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1781 .queue_data_in = tcm_qla2xxx_queue_data_in,
1782 .queue_status = tcm_qla2xxx_queue_status,
1783 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1784 .aborted_task = tcm_qla2xxx_aborted_task,
1786 * Setup function pointers for generic logic in
1787 * target_core_fabric_configfs.c
1789 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1790 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1791 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1792 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1793 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1795 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1796 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1797 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1800 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1801 .module = THIS_MODULE,
1802 .name = "qla2xxx_npiv",
1803 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1804 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1805 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1806 .tpg_get_tag = tcm_qla2xxx_get_tag,
1807 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1808 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1809 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1810 .tpg_check_prod_mode_write_protect =
1811 tcm_qla2xxx_check_prod_write_protect,
1812 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1813 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1814 .check_stop_free = tcm_qla2xxx_check_stop_free,
1815 .release_cmd = tcm_qla2xxx_release_cmd,
1816 .close_session = tcm_qla2xxx_close_session,
1817 .sess_get_index = tcm_qla2xxx_sess_get_index,
1818 .sess_get_initiator_sid = NULL,
1819 .write_pending = tcm_qla2xxx_write_pending,
1820 .write_pending_status = tcm_qla2xxx_write_pending_status,
1821 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1822 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1823 .queue_data_in = tcm_qla2xxx_queue_data_in,
1824 .queue_status = tcm_qla2xxx_queue_status,
1825 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1826 .aborted_task = tcm_qla2xxx_aborted_task,
1828 * Setup function pointers for generic logic in
1829 * target_core_fabric_configfs.c
1831 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1832 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1833 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1834 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1835 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1837 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1838 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1841 static int tcm_qla2xxx_register_configfs(void)
1845 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1846 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1847 utsname()->machine);
1849 ret = target_register_template(&tcm_qla2xxx_ops);
1853 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1857 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1859 if (!tcm_qla2xxx_free_wq) {
1861 goto out_fabric_npiv;
1864 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1865 if (!tcm_qla2xxx_cmd_wq) {
1873 destroy_workqueue(tcm_qla2xxx_free_wq);
1875 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1877 target_unregister_template(&tcm_qla2xxx_ops);
1881 static void tcm_qla2xxx_deregister_configfs(void)
1883 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1884 destroy_workqueue(tcm_qla2xxx_free_wq);
1886 target_unregister_template(&tcm_qla2xxx_ops);
1887 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1890 static int __init tcm_qla2xxx_init(void)
1894 ret = tcm_qla2xxx_register_configfs();
1901 static void __exit tcm_qla2xxx_exit(void)
1903 tcm_qla2xxx_deregister_configfs();
1906 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1907 MODULE_LICENSE("GPL");
1908 module_init(tcm_qla2xxx_init);
1909 module_exit(tcm_qla2xxx_exit);