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++;
301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
302 queue_work_on(smp_processor_id(), 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->tgt.sess_lock, flags);
348 target_sess_cmd_list_set_waiting(se_sess);
349 spin_unlock_irqrestore(&vha->hw->tgt.sess_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->tgt.sess_lock, flags);
364 qlt_unreg_sess(sess);
365 spin_unlock_irqrestore(&vha->hw->tgt.sess_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 cmd->vha->tgt_counters.qla_core_sbt_cmd++;
460 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
461 cmd->unpacked_lun, data_length, fcp_task_attr,
465 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
467 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
470 * Ensure that the complete FCP WRITE payload has been received.
471 * Otherwise return an exception via CHECK_CONDITION status.
474 cmd->cmd_flags |= BIT_11;
475 cmd->vha->tgt_counters.qla_core_ret_ctio++;
476 if (!cmd->write_data_transferred) {
478 * Check if se_cmd has already been aborted via LUN_RESET, and
479 * waiting upon completion in tcm_qla2xxx_write_pending_status()
481 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
482 complete(&cmd->se_cmd.t_transport_stop_comp);
486 if (cmd->se_cmd.pi_err)
487 transport_generic_request_failure(&cmd->se_cmd,
490 transport_generic_request_failure(&cmd->se_cmd,
491 TCM_CHECK_CONDITION_ABORT_CMD);
496 return target_execute_cmd(&cmd->se_cmd);
500 * Called from qla_target.c:qlt_do_ctio_completion()
502 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
504 cmd->cmd_flags |= BIT_10;
506 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
507 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
510 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
512 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
514 /* take an extra kref to prevent cmd free too early.
515 * need to wait for SCSI status/check condition to
516 * finish responding generate by transport_generic_request_failure.
518 kref_get(&cmd->se_cmd.cmd_kref);
519 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
523 * Called from qla_target.c:qlt_do_ctio_completion()
525 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
527 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
528 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
532 * Called from qla_target.c:qlt_issue_task_mgmt()
534 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
535 uint8_t tmr_func, uint32_t tag)
537 struct qla_tgt_sess *sess = mcmd->sess;
538 struct se_cmd *se_cmd = &mcmd->se_cmd;
540 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
541 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
544 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
546 struct qla_tgt_cmd *cmd = container_of(se_cmd,
547 struct qla_tgt_cmd, se_cmd);
549 cmd->cmd_flags |= BIT_4;
550 cmd->bufflen = se_cmd->data_length;
551 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
553 cmd->sg_cnt = se_cmd->t_data_nents;
554 cmd->sg = se_cmd->t_data_sg;
557 cmd->prot_sg_cnt = se_cmd->t_prot_nents;
558 cmd->prot_sg = se_cmd->t_prot_sg;
559 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
563 * Now queue completed DATA_IN the qla2xxx LLD and response ring
565 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
566 se_cmd->scsi_status);
569 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
571 struct qla_tgt_cmd *cmd = container_of(se_cmd,
572 struct qla_tgt_cmd, se_cmd);
573 int xmit_type = QLA_TGT_XMIT_STATUS;
575 cmd->bufflen = se_cmd->data_length;
579 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
580 if (cmd->cmd_flags & BIT_5) {
581 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
584 cmd->cmd_flags |= BIT_5;
586 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
588 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
589 * for qla_tgt_xmit_response LLD code
591 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
592 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
593 se_cmd->residual_count = 0;
595 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
596 se_cmd->residual_count += se_cmd->data_length;
601 * Now queue status response to qla2xxx LLD code and response ring
603 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
606 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
608 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
609 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
610 struct qla_tgt_mgmt_cmd, se_cmd);
612 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
613 mcmd, se_tmr->function, se_tmr->response);
615 * Do translation between TCM TM response codes and
616 * QLA2xxx FC TM response codes.
618 switch (se_tmr->response) {
619 case TMR_FUNCTION_COMPLETE:
620 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
622 case TMR_TASK_DOES_NOT_EXIST:
623 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
625 case TMR_FUNCTION_REJECTED:
626 mcmd->fc_tm_rsp = FC_TM_REJECT;
628 case TMR_LUN_DOES_NOT_EXIST:
630 mcmd->fc_tm_rsp = FC_TM_FAILED;
634 * Queue the TM response to QLA2xxx LLD to build a
635 * CTIO response packet.
637 qlt_xmit_tm_rsp(mcmd);
640 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
642 struct qla_tgt_cmd *cmd = container_of(se_cmd,
643 struct qla_tgt_cmd, se_cmd);
647 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
648 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
650 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
652 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
654 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
655 struct se_portal_group *se_tpg = se_nacl->se_tpg;
656 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
657 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
658 struct tcm_qla2xxx_lport, lport_wwn);
659 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
660 struct tcm_qla2xxx_nacl, se_node_acl);
663 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
665 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
666 if (WARN_ON(node && (node != se_nacl))) {
668 * The nacl no longer matches what we think it should be.
669 * Most likely a new dynamic acl has been added while
670 * someone dropped the hardware lock. It clearly is a
671 * bug elsewhere, but this bit can't make things worse.
673 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
677 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
678 se_nacl, nacl->nport_wwnn, nacl->nport_id);
680 * Now clear the se_nacl and session pointers from our HW lport lookup
681 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
683 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
684 * target_wait_for_sess_cmds() before the session waits for outstanding
685 * I/O to complete, to avoid a race between session shutdown execution
686 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
688 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
691 static void tcm_qla2xxx_release_session(struct kref *kref)
693 struct se_session *se_sess = container_of(kref,
694 struct se_session, sess_kref);
696 qlt_unreg_sess(se_sess->fabric_sess_ptr);
699 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
704 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
705 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
708 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
710 assert_spin_locked(&sess->vha->hw->tgt.sess_lock);
711 target_sess_cmd_list_set_waiting(sess->se_sess);
714 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
717 struct tcm_qla2xxx_nacl *nacl =
718 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
721 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
724 nacl->nport_wwnn = wwnn;
725 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
730 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
732 #define DEF_QLA_TPG_ATTRIB(name) \
734 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
735 struct config_item *item, char *page) \
737 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
738 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
739 struct tcm_qla2xxx_tpg, se_tpg); \
741 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
744 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
745 struct config_item *item, const char *page, size_t count) \
747 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
748 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
749 struct tcm_qla2xxx_tpg, se_tpg); \
750 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
754 ret = kstrtoul(page, 0, &val); \
756 pr_err("kstrtoul() failed with" \
757 " ret: %d\n", ret); \
761 if ((val != 0) && (val != 1)) { \
762 pr_err("Illegal boolean value %lu\n", val); \
770 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
772 DEF_QLA_TPG_ATTRIB(generate_node_acls);
773 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
774 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
775 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
776 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
778 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
779 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
780 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
781 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
782 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
783 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
787 /* End items for tcm_qla2xxx_tpg_attrib_cit */
789 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
792 struct se_portal_group *se_tpg = to_tpg(item);
793 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
794 struct tcm_qla2xxx_tpg, se_tpg);
796 return snprintf(page, PAGE_SIZE, "%d\n",
797 atomic_read(&tpg->lport_tpg_enabled));
800 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
802 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
803 struct tcm_qla2xxx_tpg, tpg_base_work);
804 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
805 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
807 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
808 atomic_set(&base_tpg->lport_tpg_enabled, 1);
809 qlt_enable_vha(base_vha);
811 complete(&base_tpg->tpg_base_comp);
814 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
816 struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
817 struct tcm_qla2xxx_tpg, tpg_base_work);
818 struct se_portal_group *se_tpg = &base_tpg->se_tpg;
819 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
821 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
822 atomic_set(&base_tpg->lport_tpg_enabled, 0);
823 target_undepend_item(&se_tpg->tpg_group.cg_item);
825 complete(&base_tpg->tpg_base_comp);
828 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
829 const char *page, size_t count)
831 struct se_portal_group *se_tpg = to_tpg(item);
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 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
852 if (!atomic_read(&tpg->lport_tpg_enabled))
855 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
857 init_completion(&tpg->tpg_base_comp);
858 schedule_work(&tpg->tpg_base_work);
859 wait_for_completion(&tpg->tpg_base_comp);
862 if (!atomic_read(&tpg->lport_tpg_enabled))
865 if (atomic_read(&tpg->lport_tpg_enabled))
871 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
874 return target_show_dynamic_sessions(to_tpg(item), page);
877 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
878 const char *page, size_t count)
880 struct se_portal_group *se_tpg = to_tpg(item);
881 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
882 struct tcm_qla2xxx_tpg, se_tpg);
884 int ret = kstrtoul(page, 0, &val);
887 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
890 if (val != 0 && val != 1 && val != 3) {
891 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
894 tpg->tpg_attrib.fabric_prot_type = val;
899 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
902 struct se_portal_group *se_tpg = to_tpg(item);
903 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
904 struct tcm_qla2xxx_tpg, se_tpg);
906 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
909 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
910 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
911 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
913 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
914 &tcm_qla2xxx_tpg_attr_enable,
915 &tcm_qla2xxx_tpg_attr_dynamic_sessions,
916 &tcm_qla2xxx_tpg_attr_fabric_prot_type,
920 static struct se_portal_group *tcm_qla2xxx_make_tpg(
922 struct config_group *group,
925 struct tcm_qla2xxx_lport *lport = container_of(wwn,
926 struct tcm_qla2xxx_lport, lport_wwn);
927 struct tcm_qla2xxx_tpg *tpg;
931 if (strstr(name, "tpgt_") != name)
932 return ERR_PTR(-EINVAL);
933 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
934 return ERR_PTR(-EINVAL);
937 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
938 return ERR_PTR(-ENOSYS);
941 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
943 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
944 return ERR_PTR(-ENOMEM);
947 tpg->lport_tpgt = tpgt;
949 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
952 tpg->tpg_attrib.generate_node_acls = 1;
953 tpg->tpg_attrib.demo_mode_write_protect = 1;
954 tpg->tpg_attrib.cache_dynamic_acls = 1;
955 tpg->tpg_attrib.demo_mode_login_only = 1;
957 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
968 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
970 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
971 struct tcm_qla2xxx_tpg, se_tpg);
972 struct tcm_qla2xxx_lport *lport = tpg->lport;
973 struct scsi_qla_host *vha = lport->qla_vha;
975 * Call into qla2x_target.c LLD logic to shutdown the active
976 * FC Nexuses and disable target mode operation for this qla_hw_data
978 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
979 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
981 core_tpg_deregister(se_tpg);
983 * Clear local TPG=1 pointer for non NPIV mode.
989 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
992 return tcm_qla2xxx_tpg_enable_show(item, page);
995 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
996 const char *page, size_t count)
998 struct se_portal_group *se_tpg = to_tpg(item);
999 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1000 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1001 struct tcm_qla2xxx_lport, lport_wwn);
1002 struct scsi_qla_host *vha = lport->qla_vha;
1003 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1004 struct tcm_qla2xxx_tpg, se_tpg);
1008 rc = kstrtoul(page, 0, &op);
1010 pr_err("kstrtoul() returned %d\n", rc);
1013 if ((op != 1) && (op != 0)) {
1014 pr_err("Illegal value for tpg_enable: %lu\n", op);
1018 if (atomic_read(&tpg->lport_tpg_enabled))
1021 atomic_set(&tpg->lport_tpg_enabled, 1);
1022 qlt_enable_vha(vha);
1024 if (!atomic_read(&tpg->lport_tpg_enabled))
1027 atomic_set(&tpg->lport_tpg_enabled, 0);
1028 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1034 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1036 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1037 &tcm_qla2xxx_npiv_tpg_attr_enable,
1041 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1043 struct config_group *group,
1046 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1047 struct tcm_qla2xxx_lport, lport_wwn);
1048 struct tcm_qla2xxx_tpg *tpg;
1052 if (strstr(name, "tpgt_") != name)
1053 return ERR_PTR(-EINVAL);
1054 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1055 return ERR_PTR(-EINVAL);
1057 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1059 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1060 return ERR_PTR(-ENOMEM);
1063 tpg->lport_tpgt = tpgt;
1066 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1069 tpg->tpg_attrib.generate_node_acls = 1;
1070 tpg->tpg_attrib.demo_mode_write_protect = 1;
1071 tpg->tpg_attrib.cache_dynamic_acls = 1;
1072 tpg->tpg_attrib.demo_mode_login_only = 1;
1074 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1080 return &tpg->se_tpg;
1084 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1086 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1087 scsi_qla_host_t *vha,
1088 const uint8_t *s_id)
1090 struct tcm_qla2xxx_lport *lport;
1091 struct se_node_acl *se_nacl;
1092 struct tcm_qla2xxx_nacl *nacl;
1095 lport = vha->vha_tgt.target_lport_ptr;
1097 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1102 key = sid_to_key(s_id);
1103 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1105 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1107 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1110 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1111 se_nacl, se_nacl->initiatorname);
1113 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1114 if (!nacl->qla_tgt_sess) {
1115 pr_err("Unable to locate struct qla_tgt_sess\n");
1119 return nacl->qla_tgt_sess;
1123 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1125 static void tcm_qla2xxx_set_sess_by_s_id(
1126 struct tcm_qla2xxx_lport *lport,
1127 struct se_node_acl *new_se_nacl,
1128 struct tcm_qla2xxx_nacl *nacl,
1129 struct se_session *se_sess,
1130 struct qla_tgt_sess *qla_tgt_sess,
1137 key = sid_to_key(s_id);
1138 pr_debug("set_sess_by_s_id: %06x\n", key);
1140 slot = btree_lookup32(&lport->lport_fcport_map, key);
1143 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1144 nacl->nport_id = key;
1145 rc = btree_insert32(&lport->lport_fcport_map, key,
1146 new_se_nacl, GFP_ATOMIC);
1148 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1151 pr_debug("Wiping nonexisting fc_port entry\n");
1154 qla_tgt_sess->se_sess = se_sess;
1155 nacl->qla_tgt_sess = qla_tgt_sess;
1159 if (nacl->qla_tgt_sess) {
1160 if (new_se_nacl == NULL) {
1161 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1162 btree_remove32(&lport->lport_fcport_map, key);
1163 nacl->qla_tgt_sess = NULL;
1166 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1167 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1168 qla_tgt_sess->se_sess = se_sess;
1169 nacl->qla_tgt_sess = qla_tgt_sess;
1173 if (new_se_nacl == NULL) {
1174 pr_debug("Clearing existing fc_port entry\n");
1175 btree_remove32(&lport->lport_fcport_map, key);
1179 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1180 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1181 qla_tgt_sess->se_sess = se_sess;
1182 nacl->qla_tgt_sess = qla_tgt_sess;
1184 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1185 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1189 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1191 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1192 scsi_qla_host_t *vha,
1193 const uint16_t loop_id)
1195 struct tcm_qla2xxx_lport *lport;
1196 struct se_node_acl *se_nacl;
1197 struct tcm_qla2xxx_nacl *nacl;
1198 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1200 lport = vha->vha_tgt.target_lport_ptr;
1202 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1207 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1209 fc_loopid = lport->lport_loopid_map + loop_id;
1210 se_nacl = fc_loopid->se_nacl;
1212 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1217 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1219 if (!nacl->qla_tgt_sess) {
1220 pr_err("Unable to locate struct qla_tgt_sess\n");
1224 return nacl->qla_tgt_sess;
1228 * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1230 static void tcm_qla2xxx_set_sess_by_loop_id(
1231 struct tcm_qla2xxx_lport *lport,
1232 struct se_node_acl *new_se_nacl,
1233 struct tcm_qla2xxx_nacl *nacl,
1234 struct se_session *se_sess,
1235 struct qla_tgt_sess *qla_tgt_sess,
1238 struct se_node_acl *saved_nacl;
1239 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1241 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1243 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1244 lport->lport_loopid_map)[loop_id];
1246 saved_nacl = fc_loopid->se_nacl;
1248 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1249 fc_loopid->se_nacl = new_se_nacl;
1250 if (qla_tgt_sess->se_sess != se_sess)
1251 qla_tgt_sess->se_sess = se_sess;
1252 if (nacl->qla_tgt_sess != qla_tgt_sess)
1253 nacl->qla_tgt_sess = qla_tgt_sess;
1257 if (nacl->qla_tgt_sess) {
1258 if (new_se_nacl == NULL) {
1259 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1260 fc_loopid->se_nacl = NULL;
1261 nacl->qla_tgt_sess = NULL;
1265 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1266 fc_loopid->se_nacl = new_se_nacl;
1267 if (qla_tgt_sess->se_sess != se_sess)
1268 qla_tgt_sess->se_sess = se_sess;
1269 if (nacl->qla_tgt_sess != qla_tgt_sess)
1270 nacl->qla_tgt_sess = qla_tgt_sess;
1274 if (new_se_nacl == NULL) {
1275 pr_debug("Clearing fc_loopid->se_nacl\n");
1276 fc_loopid->se_nacl = NULL;
1280 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1281 fc_loopid->se_nacl = new_se_nacl;
1282 if (qla_tgt_sess->se_sess != se_sess)
1283 qla_tgt_sess->se_sess = se_sess;
1284 if (nacl->qla_tgt_sess != qla_tgt_sess)
1285 nacl->qla_tgt_sess = qla_tgt_sess;
1287 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1288 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1292 * Should always be called with qla_hw_data->tgt.sess_lock held.
1294 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1295 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1297 struct se_session *se_sess = sess->se_sess;
1298 unsigned char be_sid[3];
1300 be_sid[0] = sess->s_id.b.domain;
1301 be_sid[1] = sess->s_id.b.area;
1302 be_sid[2] = sess->s_id.b.al_pa;
1304 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1306 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1307 sess, sess->loop_id);
1310 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1312 struct qla_tgt *tgt = sess->tgt;
1313 struct qla_hw_data *ha = tgt->ha;
1314 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1315 struct se_session *se_sess;
1316 struct tcm_qla2xxx_lport *lport;
1318 BUG_ON(in_interrupt());
1320 se_sess = sess->se_sess;
1322 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1327 lport = vha->vha_tgt.target_lport_ptr;
1329 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1333 target_wait_for_sess_cmds(se_sess);
1335 transport_deregister_session_configfs(sess->se_sess);
1336 transport_deregister_session(sess->se_sess);
1340 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1341 * to locate struct se_node_acl
1343 static int tcm_qla2xxx_check_initiator_node_acl(
1344 scsi_qla_host_t *vha,
1345 unsigned char *fc_wwpn,
1350 struct qla_hw_data *ha = vha->hw;
1351 struct tcm_qla2xxx_lport *lport;
1352 struct tcm_qla2xxx_tpg *tpg;
1353 struct tcm_qla2xxx_nacl *nacl;
1354 struct se_portal_group *se_tpg;
1355 struct se_node_acl *se_nacl;
1356 struct se_session *se_sess;
1357 struct qla_tgt_sess *sess = qla_tgt_sess;
1358 unsigned char port_name[36];
1359 unsigned long flags;
1360 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1361 TCM_QLA2XXX_DEFAULT_TAGS;
1363 lport = vha->vha_tgt.target_lport_ptr;
1365 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1370 * Locate the TPG=1 reference..
1374 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1377 se_tpg = &tpg->se_tpg;
1379 se_sess = transport_init_session_tags(num_tags,
1380 sizeof(struct qla_tgt_cmd),
1382 if (IS_ERR(se_sess)) {
1383 pr_err("Unable to initialize struct se_session\n");
1384 return PTR_ERR(se_sess);
1387 * Format the FCP Initiator port_name into colon seperated values to
1388 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1390 memset(&port_name, 0, 36);
1391 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1393 * Locate our struct se_node_acl either from an explict NodeACL created
1394 * via ConfigFS, or via running in TPG demo mode.
1396 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1398 if (!se_sess->se_node_acl) {
1399 transport_free_session(se_sess);
1402 se_nacl = se_sess->se_node_acl;
1403 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1405 * And now setup the new se_nacl and session pointers into our HW lport
1406 * mappings for fabric S_ID and LOOP_ID.
1408 spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1409 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1410 qla_tgt_sess, s_id);
1411 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1412 qla_tgt_sess, loop_id);
1413 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1415 * Finally register the new FC Nexus with TCM
1417 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1422 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1423 uint16_t loop_id, bool conf_compl_supported)
1425 struct qla_tgt *tgt = sess->tgt;
1426 struct qla_hw_data *ha = tgt->ha;
1427 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1428 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1429 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1430 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1431 struct tcm_qla2xxx_nacl, se_node_acl);
1435 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1436 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1437 sess, sess->port_name,
1438 sess->loop_id, loop_id, sess->s_id.b.domain,
1439 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1440 s_id.b.area, s_id.b.al_pa);
1442 if (sess->loop_id != loop_id) {
1444 * Because we can shuffle loop IDs around and we
1445 * update different sessions non-atomically, we might
1446 * have overwritten this session's old loop ID
1447 * already, and we might end up overwriting some other
1448 * session that will be updated later. So we have to
1449 * be extra careful and we can't warn about those things...
1451 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1452 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1454 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1456 sess->loop_id = loop_id;
1459 if (sess->s_id.b24 != s_id.b24) {
1460 key = (((u32) sess->s_id.b.domain << 16) |
1461 ((u32) sess->s_id.b.area << 8) |
1462 ((u32) sess->s_id.b.al_pa));
1464 if (btree_lookup32(&lport->lport_fcport_map, key))
1465 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1466 "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1467 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1469 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1470 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1472 key = (((u32) s_id.b.domain << 16) |
1473 ((u32) s_id.b.area << 8) |
1474 ((u32) s_id.b.al_pa));
1476 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1477 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1478 s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1479 btree_update32(&lport->lport_fcport_map, key, se_nacl);
1481 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1485 nacl->nport_id = key;
1488 sess->conf_compl_supported = conf_compl_supported;
1490 /* Reset logout parameters to default */
1491 sess->logout_on_delete = 1;
1492 sess->keep_nport_handle = 0;
1496 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1498 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1499 .handle_cmd = tcm_qla2xxx_handle_cmd,
1500 .handle_data = tcm_qla2xxx_handle_data,
1501 .handle_dif_err = tcm_qla2xxx_handle_dif_err,
1502 .handle_tmr = tcm_qla2xxx_handle_tmr,
1503 .free_cmd = tcm_qla2xxx_free_cmd,
1504 .free_mcmd = tcm_qla2xxx_free_mcmd,
1505 .free_session = tcm_qla2xxx_free_session,
1506 .update_sess = tcm_qla2xxx_update_sess,
1507 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1508 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1509 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1510 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1511 .put_sess = tcm_qla2xxx_put_sess,
1512 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1515 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1519 rc = btree_init32(&lport->lport_fcport_map);
1521 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1525 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1527 if (!lport->lport_loopid_map) {
1528 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1529 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1530 btree_destroy32(&lport->lport_fcport_map);
1533 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1535 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1536 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1540 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1541 void *target_lport_ptr,
1542 u64 npiv_wwpn, u64 npiv_wwnn)
1544 struct qla_hw_data *ha = vha->hw;
1545 struct tcm_qla2xxx_lport *lport =
1546 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1548 * Setup tgt_ops, local pointer to vha and target_lport_ptr
1550 ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1551 vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1552 lport->qla_vha = vha;
1557 static struct se_wwn *tcm_qla2xxx_make_lport(
1558 struct target_fabric_configfs *tf,
1559 struct config_group *group,
1562 struct tcm_qla2xxx_lport *lport;
1566 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1567 return ERR_PTR(-EINVAL);
1569 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1571 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1572 return ERR_PTR(-ENOMEM);
1574 lport->lport_wwpn = wwpn;
1575 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1577 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1579 ret = tcm_qla2xxx_init_lport(lport);
1583 ret = qlt_lport_register(lport, wwpn, 0, 0,
1584 tcm_qla2xxx_lport_register_cb);
1588 return &lport->lport_wwn;
1590 vfree(lport->lport_loopid_map);
1591 btree_destroy32(&lport->lport_fcport_map);
1594 return ERR_PTR(ret);
1597 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1599 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1600 struct tcm_qla2xxx_lport, lport_wwn);
1601 struct scsi_qla_host *vha = lport->qla_vha;
1602 struct se_node_acl *node;
1606 * Call into qla2x_target.c LLD logic to complete the
1607 * shutdown of struct qla_tgt after the call to
1608 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1610 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1611 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1613 qlt_lport_deregister(vha);
1615 vfree(lport->lport_loopid_map);
1616 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1617 btree_remove32(&lport->lport_fcport_map, key);
1618 btree_destroy32(&lport->lport_fcport_map);
1622 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1623 void *target_lport_ptr,
1624 u64 npiv_wwpn, u64 npiv_wwnn)
1626 struct fc_vport *vport;
1627 struct Scsi_Host *sh = base_vha->host;
1628 struct scsi_qla_host *npiv_vha;
1629 struct tcm_qla2xxx_lport *lport =
1630 (struct tcm_qla2xxx_lport *)target_lport_ptr;
1631 struct tcm_qla2xxx_lport *base_lport =
1632 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1633 struct fc_vport_identifiers vport_id;
1635 if (!qla_tgt_mode_enabled(base_vha)) {
1636 pr_err("qla2xxx base_vha not enabled for target mode\n");
1640 if (!base_lport || !base_lport->tpg_1 ||
1641 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1642 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1646 memset(&vport_id, 0, sizeof(vport_id));
1647 vport_id.port_name = npiv_wwpn;
1648 vport_id.node_name = npiv_wwnn;
1649 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1650 vport_id.vport_type = FC_PORTTYPE_NPIV;
1651 vport_id.disable = false;
1653 vport = fc_vport_create(sh, 0, &vport_id);
1655 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1659 * Setup local pointer to NPIV vhba + target_lport_ptr
1661 npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1662 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1663 lport->qla_vha = npiv_vha;
1664 scsi_host_get(npiv_vha->host);
1669 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1670 struct target_fabric_configfs *tf,
1671 struct config_group *group,
1674 struct tcm_qla2xxx_lport *lport;
1675 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1679 snprintf(tmp, 128, "%s", name);
1681 p = strchr(tmp, '@');
1683 pr_err("Unable to locate NPIV '@' seperator\n");
1684 return ERR_PTR(-EINVAL);
1688 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1689 return ERR_PTR(-EINVAL);
1691 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1692 &npiv_wwpn, &npiv_wwnn) < 0)
1693 return ERR_PTR(-EINVAL);
1695 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1697 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1698 return ERR_PTR(-ENOMEM);
1700 lport->lport_npiv_wwpn = npiv_wwpn;
1701 lport->lport_npiv_wwnn = npiv_wwnn;
1702 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1704 ret = tcm_qla2xxx_init_lport(lport);
1708 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1709 tcm_qla2xxx_lport_register_npiv_cb);
1713 return &lport->lport_wwn;
1715 vfree(lport->lport_loopid_map);
1716 btree_destroy32(&lport->lport_fcport_map);
1719 return ERR_PTR(ret);
1722 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1724 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1725 struct tcm_qla2xxx_lport, lport_wwn);
1726 struct scsi_qla_host *npiv_vha = lport->qla_vha;
1727 struct qla_hw_data *ha = npiv_vha->hw;
1728 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1730 scsi_host_put(npiv_vha->host);
1732 * Notify libfc that we want to release the vha->fc_vport
1734 fc_vport_terminate(npiv_vha->fc_vport);
1735 scsi_host_put(base_vha->host);
1740 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1743 return sprintf(page,
1744 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1745 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1746 utsname()->machine);
1749 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1751 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1752 &tcm_qla2xxx_wwn_attr_version,
1756 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1757 .module = THIS_MODULE,
1759 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1761 * XXX: Limit assumes single page per scatter-gather-list entry.
1762 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1764 .max_data_sg_nents = 1200,
1765 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1766 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1767 .tpg_get_tag = tcm_qla2xxx_get_tag,
1768 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1769 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1770 .tpg_check_demo_mode_write_protect =
1771 tcm_qla2xxx_check_demo_write_protect,
1772 .tpg_check_prod_mode_write_protect =
1773 tcm_qla2xxx_check_prod_write_protect,
1774 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
1775 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1776 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1777 .check_stop_free = tcm_qla2xxx_check_stop_free,
1778 .release_cmd = tcm_qla2xxx_release_cmd,
1779 .shutdown_session = tcm_qla2xxx_shutdown_session,
1780 .close_session = tcm_qla2xxx_close_session,
1781 .sess_get_index = tcm_qla2xxx_sess_get_index,
1782 .sess_get_initiator_sid = NULL,
1783 .write_pending = tcm_qla2xxx_write_pending,
1784 .write_pending_status = tcm_qla2xxx_write_pending_status,
1785 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1786 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1787 .queue_data_in = tcm_qla2xxx_queue_data_in,
1788 .queue_status = tcm_qla2xxx_queue_status,
1789 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1790 .aborted_task = tcm_qla2xxx_aborted_task,
1792 * Setup function pointers for generic logic in
1793 * target_core_fabric_configfs.c
1795 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1796 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1797 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1798 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1799 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1801 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1802 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
1803 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
1806 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1807 .module = THIS_MODULE,
1808 .name = "qla2xxx_npiv",
1809 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
1810 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1811 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1812 .tpg_get_tag = tcm_qla2xxx_get_tag,
1813 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1814 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1815 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1816 .tpg_check_prod_mode_write_protect =
1817 tcm_qla2xxx_check_prod_write_protect,
1818 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1819 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1820 .check_stop_free = tcm_qla2xxx_check_stop_free,
1821 .release_cmd = tcm_qla2xxx_release_cmd,
1822 .shutdown_session = tcm_qla2xxx_shutdown_session,
1823 .close_session = tcm_qla2xxx_close_session,
1824 .sess_get_index = tcm_qla2xxx_sess_get_index,
1825 .sess_get_initiator_sid = NULL,
1826 .write_pending = tcm_qla2xxx_write_pending,
1827 .write_pending_status = tcm_qla2xxx_write_pending_status,
1828 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1829 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1830 .queue_data_in = tcm_qla2xxx_queue_data_in,
1831 .queue_status = tcm_qla2xxx_queue_status,
1832 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1833 .aborted_task = tcm_qla2xxx_aborted_task,
1835 * Setup function pointers for generic logic in
1836 * target_core_fabric_configfs.c
1838 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1839 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1840 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1841 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1842 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
1844 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
1845 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
1848 static int tcm_qla2xxx_register_configfs(void)
1852 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1853 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1854 utsname()->machine);
1856 ret = target_register_template(&tcm_qla2xxx_ops);
1860 ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1864 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1866 if (!tcm_qla2xxx_free_wq) {
1868 goto out_fabric_npiv;
1871 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1872 if (!tcm_qla2xxx_cmd_wq) {
1880 destroy_workqueue(tcm_qla2xxx_free_wq);
1882 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1884 target_unregister_template(&tcm_qla2xxx_ops);
1888 static void tcm_qla2xxx_deregister_configfs(void)
1890 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1891 destroy_workqueue(tcm_qla2xxx_free_wq);
1893 target_unregister_template(&tcm_qla2xxx_ops);
1894 target_unregister_template(&tcm_qla2xxx_npiv_ops);
1897 static int __init tcm_qla2xxx_init(void)
1901 ret = tcm_qla2xxx_register_configfs();
1908 static void __exit tcm_qla2xxx_exit(void)
1910 tcm_qla2xxx_deregister_configfs();
1913 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1914 MODULE_LICENSE("GPL");
1915 module_init(tcm_qla2xxx_init);
1916 module_exit(tcm_qla2xxx_exit);