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1// SPDX-License-Identifier: GPL-2.0-or-later2/*******************************************************************************3 * This file contains tcm implementation using v4 configfs fabric infrastructure4 * for QLogic target mode HBAs5 *6 * (c) Copyright 2010-2013 Datera, Inc.7 *8 * Author: Nicholas A. Bellinger <nab@daterainc.com>9 *10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from11 * the TCM_FC / Open-FCoE.org fabric module.12 *13 * Copyright (c) 2010 Cisco Systems, Inc14 *15 ****************************************************************************/16 17 18#include <linux/module.h>19#include <linux/utsname.h>20#include <linux/vmalloc.h>21#include <linux/list.h>22#include <linux/slab.h>23#include <linux/types.h>24#include <linux/string.h>25#include <linux/configfs.h>26#include <linux/ctype.h>27#include <linux/unaligned.h>28#include <scsi/scsi_host.h>29#include <target/target_core_base.h>30#include <target/target_core_fabric.h>31 32#include "qla_def.h"33#include "qla_target.h"34#include "tcm_qla2xxx.h"35 36static struct workqueue_struct *tcm_qla2xxx_free_wq;37 38/*39 * Parse WWN.40 * If strict, we require lower-case hex and colon separators to be sure41 * the name is the same as what would be generated by ft_format_wwn()42 * so the name and wwn are mapped one-to-one.43 */44static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)45{46 const char *cp;47 char c;48 u32 nibble;49 u32 byte = 0;50 u32 pos = 0;51 u32 err;52 53 *wwn = 0;54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {55 c = *cp;56 if (c == '\n' && cp[1] == '\0')57 continue;58 if (strict && pos++ == 2 && byte++ < 7) {59 pos = 0;60 if (c == ':')61 continue;62 err = 1;63 goto fail;64 }65 if (c == '\0') {66 err = 2;67 if (strict && byte != 8)68 goto fail;69 return cp - name;70 }71 err = 3;72 if (isdigit(c))73 nibble = c - '0';74 else if (isxdigit(c) && (islower(c) || !strict))75 nibble = tolower(c) - 'a' + 10;76 else77 goto fail;78 *wwn = (*wwn << 4) | nibble;79 }80 err = 4;81fail:82 pr_debug("err %u len %zu pos %u byte %u\n",83 err, cp - name, pos, byte);84 return -1;85}86 87static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)88{89 u8 b[8];90 91 put_unaligned_be64(wwn, b);92 return snprintf(buf, len,93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);95}96 97/*98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn99 */100static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)101{102 unsigned int i, j;103 u8 wwn[8];104 105 memset(wwn, 0, sizeof(wwn));106 107 /* Validate and store the new name */108 for (i = 0, j = 0; i < 16; i++) {109 int value;110 111 value = hex_to_bin(*ns++);112 if (value >= 0)113 j = (j << 4) | value;114 else115 return -EINVAL;116 117 if (i % 2) {118 wwn[i/2] = j & 0xff;119 j = 0;120 }121 }122 123 *nm = wwn_to_u64(wwn);124 return 0;125}126 127/*128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:129 * store_fc_host_vport_create()130 */131static int tcm_qla2xxx_npiv_parse_wwn(132 const char *name,133 size_t count,134 u64 *wwpn,135 u64 *wwnn)136{137 unsigned int cnt = count;138 int rc;139 140 *wwpn = 0;141 *wwnn = 0;142 143 /* count may include a LF at end of string */144 if (name[cnt-1] == '\n' || name[cnt-1] == 0)145 cnt--;146 147 /* validate we have enough characters for WWPN */148 if ((cnt != (16+1+16)) || (name[16] != ':'))149 return -EINVAL;150 151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);152 if (rc != 0)153 return rc;154 155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);156 if (rc != 0)157 return rc;158 159 return 0;160}161 162static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)163{164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,165 struct tcm_qla2xxx_tpg, se_tpg);166 struct tcm_qla2xxx_lport *lport = tpg->lport;167 168 return lport->lport_naa_name;169}170 171static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)172{173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,174 struct tcm_qla2xxx_tpg, se_tpg);175 return tpg->lport_tpgt;176}177 178static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)179{180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,181 struct tcm_qla2xxx_tpg, se_tpg);182 183 return tpg->tpg_attrib.generate_node_acls;184}185 186static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)187{188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,189 struct tcm_qla2xxx_tpg, se_tpg);190 191 return tpg->tpg_attrib.cache_dynamic_acls;192}193 194static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)195{196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,197 struct tcm_qla2xxx_tpg, se_tpg);198 199 return tpg->tpg_attrib.demo_mode_write_protect;200}201 202static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)203{204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,205 struct tcm_qla2xxx_tpg, se_tpg);206 207 return tpg->tpg_attrib.prod_mode_write_protect;208}209 210static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)211{212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,213 struct tcm_qla2xxx_tpg, se_tpg);214 215 return tpg->tpg_attrib.demo_mode_login_only;216}217 218static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)219{220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,221 struct tcm_qla2xxx_tpg, se_tpg);222 223 return tpg->tpg_attrib.fabric_prot_type;224}225 226static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)227{228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,229 struct tcm_qla2xxx_tpg, se_tpg);230 231 return tpg->lport_tpgt;232}233 234static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)235{236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,237 struct qla_tgt_mgmt_cmd, free_work);238 239 transport_generic_free_cmd(&mcmd->se_cmd, 0);240}241 242/*243 * Called from qla_target_template->free_mcmd(), and will call244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops245 * release callback. qla_hw_data->hardware_lock is expected to be held246 */247static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)248{249 if (!mcmd)250 return;251 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);252 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);253}254 255static void tcm_qla2xxx_complete_free(struct work_struct *work)256{257 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);258 unsigned long flags;259 260 cmd->cmd_in_wq = 0;261 262 WARN_ON(cmd->trc_flags & TRC_CMD_FREE);263 264 /* To do: protect all tgt_counters manipulations with proper locking. */265 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;266 cmd->trc_flags |= TRC_CMD_FREE;267 cmd->cmd_sent_to_fw = 0;268 269 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);270 list_del_init(&cmd->sess_cmd_list);271 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);272 273 transport_generic_free_cmd(&cmd->se_cmd, 0);274}275 276static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess)277{278 struct se_session *se_sess = sess->se_sess;279 struct qla_tgt_cmd *cmd;280 int tag, cpu;281 282 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);283 if (tag < 0)284 return NULL;285 286 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];287 memset(cmd, 0, sizeof(struct qla_tgt_cmd));288 cmd->se_cmd.map_tag = tag;289 cmd->se_cmd.map_cpu = cpu;290 291 return cmd;292}293 294static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd)295{296 target_free_tag(cmd->sess->se_sess, &cmd->se_cmd);297}298 299/*300 * Called from qla_target_template->free_cmd(), and will call301 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops302 * release callback. qla_hw_data->hardware_lock is expected to be held303 */304static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)305{306 cmd->qpair->tgt_counters.core_qla_free_cmd++;307 cmd->cmd_in_wq = 1;308 309 WARN_ON(cmd->trc_flags & TRC_CMD_DONE);310 cmd->trc_flags |= TRC_CMD_DONE;311 312 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);313 queue_work(tcm_qla2xxx_free_wq, &cmd->work);314}315 316/*317 * Called from struct target_core_fabric_ops->check_stop_free() context318 */319static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)320{321 struct qla_tgt_cmd *cmd;322 323 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {324 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);325 cmd->trc_flags |= TRC_CMD_CHK_STOP;326 }327 328 return target_put_sess_cmd(se_cmd);329}330 331/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying332 * fabric descriptor @se_cmd command to release333 */334static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)335{336 struct qla_tgt_cmd *cmd;337 338 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {339 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,340 struct qla_tgt_mgmt_cmd, se_cmd);341 qlt_free_mcmd(mcmd);342 return;343 }344 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);345 346 if (WARN_ON(cmd->cmd_sent_to_fw))347 return;348 349 qlt_free_cmd(cmd);350}351 352static void tcm_qla2xxx_release_session(struct kref *kref)353{354 struct fc_port *sess = container_of(kref,355 struct fc_port, sess_kref);356 357 qlt_unreg_sess(sess);358}359 360static void tcm_qla2xxx_put_sess(struct fc_port *sess)361{362 if (!sess)363 return;364 365 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);366}367 368static void tcm_qla2xxx_close_session(struct se_session *se_sess)369{370 struct fc_port *sess = se_sess->fabric_sess_ptr;371 372 BUG_ON(!sess);373 374 target_stop_session(se_sess);375 376 sess->explicit_logout = 1;377 tcm_qla2xxx_put_sess(sess);378}379 380static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)381{382 struct qla_tgt_cmd *cmd = container_of(se_cmd,383 struct qla_tgt_cmd, se_cmd);384 385 if (cmd->aborted) {386 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task387 * can get ahead of this cmd. tcm_qla2xxx_aborted_task388 * already kick start the free.389 */390 pr_debug("write_pending aborted cmd[%p] refcount %d "391 "transport_state %x, t_state %x, se_cmd_flags %x\n",392 cmd, kref_read(&cmd->se_cmd.cmd_kref),393 cmd->se_cmd.transport_state,394 cmd->se_cmd.t_state,395 cmd->se_cmd.se_cmd_flags);396 transport_generic_request_failure(&cmd->se_cmd,397 TCM_CHECK_CONDITION_ABORT_CMD);398 return 0;399 }400 cmd->trc_flags |= TRC_XFR_RDY;401 cmd->bufflen = se_cmd->data_length;402 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);403 404 cmd->sg_cnt = se_cmd->t_data_nents;405 cmd->sg = se_cmd->t_data_sg;406 407 cmd->prot_sg_cnt = se_cmd->t_prot_nents;408 cmd->prot_sg = se_cmd->t_prot_sg;409 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;410 se_cmd->pi_err = 0;411 412 /*413 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup414 * the SGL mappings into PCIe memory for incoming FCP WRITE data.415 */416 return qlt_rdy_to_xfer(cmd);417}418 419static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)420{421 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {422 struct qla_tgt_cmd *cmd = container_of(se_cmd,423 struct qla_tgt_cmd, se_cmd);424 return cmd->state;425 }426 427 return 0;428}429 430/*431 * Called from process context in qla_target.c:qlt_do_work() code432 */433static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,434 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,435 int data_dir, int bidi)436{437 struct se_cmd *se_cmd = &cmd->se_cmd;438 struct se_session *se_sess;439 struct fc_port *sess;440#ifdef CONFIG_TCM_QLA2XXX_DEBUG441 struct se_portal_group *se_tpg;442 struct tcm_qla2xxx_tpg *tpg;443#endif444 int rc, target_flags = TARGET_SCF_ACK_KREF;445 unsigned long flags;446 447 if (bidi)448 target_flags |= TARGET_SCF_BIDI_OP;449 450 if (se_cmd->cpuid != WORK_CPU_UNBOUND)451 target_flags |= TARGET_SCF_USE_CPUID;452 453 sess = cmd->sess;454 if (!sess) {455 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");456 return -EINVAL;457 }458 459 se_sess = sess->se_sess;460 if (!se_sess) {461 pr_err("Unable to locate active struct se_session\n");462 return -EINVAL;463 }464 465#ifdef CONFIG_TCM_QLA2XXX_DEBUG466 se_tpg = se_sess->se_tpg;467 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);468 if (unlikely(tpg->tpg_attrib.jam_host)) {469 /* return, and dont run target_submit_cmd,discarding command */470 return 0;471 }472#endif473 cmd->qpair->tgt_counters.qla_core_sbt_cmd++;474 475 spin_lock_irqsave(&sess->sess_cmd_lock, flags);476 list_add_tail(&cmd->sess_cmd_list, &sess->sess_cmd_list);477 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);478 479 rc = target_init_cmd(se_cmd, se_sess, &cmd->sense_buffer[0],480 cmd->unpacked_lun, data_length, fcp_task_attr,481 data_dir, target_flags);482 if (rc)483 return rc;484 485 if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0,486 GFP_KERNEL))487 return 0;488 489 target_submit(se_cmd);490 return 0;491}492 493static void tcm_qla2xxx_handle_data_work(struct work_struct *work)494{495 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);496 497 /*498 * Ensure that the complete FCP WRITE payload has been received.499 * Otherwise return an exception via CHECK_CONDITION status.500 */501 cmd->cmd_in_wq = 0;502 cmd->cmd_sent_to_fw = 0;503 if (cmd->aborted) {504 transport_generic_request_failure(&cmd->se_cmd,505 TCM_CHECK_CONDITION_ABORT_CMD);506 return;507 }508 509 cmd->qpair->tgt_counters.qla_core_ret_ctio++;510 if (!cmd->write_data_transferred) {511 switch (cmd->dif_err_code) {512 case DIF_ERR_GRD:513 cmd->se_cmd.pi_err =514 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;515 break;516 case DIF_ERR_REF:517 cmd->se_cmd.pi_err =518 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;519 break;520 case DIF_ERR_APP:521 cmd->se_cmd.pi_err =522 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;523 break;524 case DIF_ERR_NONE:525 default:526 break;527 }528 529 if (cmd->se_cmd.pi_err)530 transport_generic_request_failure(&cmd->se_cmd,531 cmd->se_cmd.pi_err);532 else533 transport_generic_request_failure(&cmd->se_cmd,534 TCM_CHECK_CONDITION_ABORT_CMD);535 536 return;537 }538 539 return target_execute_cmd(&cmd->se_cmd);540}541 542/*543 * Called from qla_target.c:qlt_do_ctio_completion()544 */545static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)546{547 cmd->trc_flags |= TRC_DATA_IN;548 cmd->cmd_in_wq = 1;549 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);550 queue_work(tcm_qla2xxx_free_wq, &cmd->work);551}552 553static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)554{555 return 0;556}557 558static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,559 uint16_t *pfw_prot_opts)560{561 struct se_cmd *se_cmd = &cmd->se_cmd;562 563 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))564 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;565 566 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))567 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;568 569 return 0;570}571 572/*573 * Called from qla_target.c:qlt_issue_task_mgmt()574 */575static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,576 uint16_t tmr_func, uint32_t tag)577{578 struct fc_port *sess = mcmd->sess;579 struct se_cmd *se_cmd = &mcmd->se_cmd;580 int transl_tmr_func = 0;581 582 switch (tmr_func) {583 case QLA_TGT_ABTS:584 pr_debug("%ld: ABTS received\n", sess->vha->host_no);585 transl_tmr_func = TMR_ABORT_TASK;586 break;587 case QLA_TGT_2G_ABORT_TASK:588 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);589 transl_tmr_func = TMR_ABORT_TASK;590 break;591 case QLA_TGT_CLEAR_ACA:592 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);593 transl_tmr_func = TMR_CLEAR_ACA;594 break;595 case QLA_TGT_TARGET_RESET:596 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);597 transl_tmr_func = TMR_TARGET_WARM_RESET;598 break;599 case QLA_TGT_LUN_RESET:600 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);601 transl_tmr_func = TMR_LUN_RESET;602 break;603 case QLA_TGT_CLEAR_TS:604 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);605 transl_tmr_func = TMR_CLEAR_TASK_SET;606 break;607 case QLA_TGT_ABORT_TS:608 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);609 transl_tmr_func = TMR_ABORT_TASK_SET;610 break;611 default:612 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",613 sess->vha->host_no, tmr_func);614 return -ENOSYS;615 }616 617 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,618 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);619}620 621static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,622 uint64_t tag)623{624 struct qla_tgt_cmd *cmd;625 unsigned long flags;626 627 if (!sess->se_sess)628 return NULL;629 630 spin_lock_irqsave(&sess->sess_cmd_lock, flags);631 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) {632 if (cmd->se_cmd.tag == tag)633 goto done;634 }635 cmd = NULL;636done:637 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags);638 639 return cmd;640}641 642static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)643{644 struct qla_tgt_cmd *cmd = container_of(se_cmd,645 struct qla_tgt_cmd, se_cmd);646 647 if (cmd->aborted) {648 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task649 * can get ahead of this cmd. tcm_qla2xxx_aborted_task650 * already kick start the free.651 */652 pr_debug("queue_data_in aborted cmd[%p] refcount %d "653 "transport_state %x, t_state %x, se_cmd_flags %x\n",654 cmd, kref_read(&cmd->se_cmd.cmd_kref),655 cmd->se_cmd.transport_state,656 cmd->se_cmd.t_state,657 cmd->se_cmd.se_cmd_flags);658 return 0;659 }660 661 cmd->trc_flags |= TRC_XMIT_DATA;662 cmd->bufflen = se_cmd->data_length;663 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);664 665 cmd->sg_cnt = se_cmd->t_data_nents;666 cmd->sg = se_cmd->t_data_sg;667 cmd->offset = 0;668 669 cmd->prot_sg_cnt = se_cmd->t_prot_nents;670 cmd->prot_sg = se_cmd->t_prot_sg;671 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;672 se_cmd->pi_err = 0;673 674 /*675 * Now queue completed DATA_IN the qla2xxx LLD and response ring676 */677 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,678 se_cmd->scsi_status);679}680 681static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)682{683 struct qla_tgt_cmd *cmd = container_of(se_cmd,684 struct qla_tgt_cmd, se_cmd);685 int xmit_type = QLA_TGT_XMIT_STATUS;686 687 if (cmd->aborted) {688 /*689 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task690 * can get ahead of this cmd. tcm_qla2xxx_aborted_task691 * already kick start the free.692 */693 pr_debug(694 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",695 cmd, kref_read(&cmd->se_cmd.cmd_kref),696 cmd->se_cmd.transport_state, cmd->se_cmd.t_state,697 cmd->se_cmd.se_cmd_flags);698 return 0;699 }700 cmd->bufflen = se_cmd->data_length;701 cmd->sg = NULL;702 cmd->sg_cnt = 0;703 cmd->offset = 0;704 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);705 cmd->trc_flags |= TRC_XMIT_STATUS;706 707 if (se_cmd->data_direction == DMA_FROM_DEVICE) {708 /*709 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen710 * for qla_tgt_xmit_response LLD code711 */712 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {713 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;714 se_cmd->residual_count = 0;715 }716 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;717 se_cmd->residual_count += se_cmd->data_length;718 719 cmd->bufflen = 0;720 }721 /*722 * Now queue status response to qla2xxx LLD code and response ring723 */724 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);725}726 727static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)728{729 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;730 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,731 struct qla_tgt_mgmt_cmd, se_cmd);732 733 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",734 mcmd, se_tmr->function, se_tmr->response);735 /*736 * Do translation between TCM TM response codes and737 * QLA2xxx FC TM response codes.738 */739 switch (se_tmr->response) {740 case TMR_FUNCTION_COMPLETE:741 mcmd->fc_tm_rsp = FC_TM_SUCCESS;742 break;743 case TMR_TASK_DOES_NOT_EXIST:744 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;745 break;746 case TMR_FUNCTION_REJECTED:747 mcmd->fc_tm_rsp = FC_TM_REJECT;748 break;749 case TMR_LUN_DOES_NOT_EXIST:750 default:751 mcmd->fc_tm_rsp = FC_TM_FAILED;752 break;753 }754 /*755 * Queue the TM response to QLA2xxx LLD to build a756 * CTIO response packet.757 */758 qlt_xmit_tm_rsp(mcmd);759}760 761static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)762{763 struct qla_tgt_cmd *cmd;764 unsigned long flags;765 766 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)767 return;768 769 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);770 771 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags);772 list_del_init(&cmd->sess_cmd_list);773 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags);774 775 qlt_abort_cmd(cmd);776}777 778static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,779 struct tcm_qla2xxx_nacl *, struct fc_port *);780/*781 * Expected to be called with struct qla_hw_data->tgt.sess_lock held782 */783static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)784{785 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;786 struct se_portal_group *se_tpg = se_nacl->se_tpg;787 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;788 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,789 struct tcm_qla2xxx_lport, lport_wwn);790 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,791 struct tcm_qla2xxx_nacl, se_node_acl);792 void *node;793 794 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);795 796 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);797 if (WARN_ON(node && (node != se_nacl))) {798 /*799 * The nacl no longer matches what we think it should be.800 * Most likely a new dynamic acl has been added while801 * someone dropped the hardware lock. It clearly is a802 * bug elsewhere, but this bit can't make things worse.803 */804 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,805 node, GFP_ATOMIC);806 }807 808 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",809 se_nacl, nacl->nport_wwnn, nacl->nport_id);810 /*811 * Now clear the se_nacl and session pointers from our HW lport lookup812 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.813 *814 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->815 * target_wait_for_sess_cmds() before the session waits for outstanding816 * I/O to complete, to avoid a race between session shutdown execution817 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.818 */819 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);820}821 822static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)823{824 target_stop_session(sess->se_sess);825}826 827static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,828 const char *name)829{830 struct tcm_qla2xxx_nacl *nacl =831 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);832 u64 wwnn;833 834 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)835 return -EINVAL;836 837 nacl->nport_wwnn = wwnn;838 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);839 840 return 0;841}842 843/* Start items for tcm_qla2xxx_tpg_attrib_cit */844 845#define DEF_QLA_TPG_ATTRIB(name) \846 \847static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \848 struct config_item *item, char *page) \849{ \850 struct se_portal_group *se_tpg = attrib_to_tpg(item); \851 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \852 struct tcm_qla2xxx_tpg, se_tpg); \853 \854 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \855} \856 \857static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \858 struct config_item *item, const char *page, size_t count) \859{ \860 struct se_portal_group *se_tpg = attrib_to_tpg(item); \861 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \862 struct tcm_qla2xxx_tpg, se_tpg); \863 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \864 unsigned long val; \865 int ret; \866 \867 ret = kstrtoul(page, 0, &val); \868 if (ret < 0) { \869 pr_err("kstrtoul() failed with" \870 " ret: %d\n", ret); \871 return -EINVAL; \872 } \873 \874 if ((val != 0) && (val != 1)) { \875 pr_err("Illegal boolean value %lu\n", val); \876 return -EINVAL; \877 } \878 \879 a->name = val; \880 \881 return count; \882} \883CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)884 885DEF_QLA_TPG_ATTRIB(generate_node_acls);886DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);887DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);888DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);889DEF_QLA_TPG_ATTRIB(demo_mode_login_only);890#ifdef CONFIG_TCM_QLA2XXX_DEBUG891DEF_QLA_TPG_ATTRIB(jam_host);892#endif893 894static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {895 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,896 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,897 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,898 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,899 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,900#ifdef CONFIG_TCM_QLA2XXX_DEBUG901 &tcm_qla2xxx_tpg_attrib_attr_jam_host,902#endif903 NULL,904};905 906/* End items for tcm_qla2xxx_tpg_attrib_cit */907 908static int tcm_qla2xxx_enable_tpg(struct se_portal_group *se_tpg,909 bool enable)910{911 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;912 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,913 struct tcm_qla2xxx_lport, lport_wwn);914 struct scsi_qla_host *vha = lport->qla_vha;915 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,916 struct tcm_qla2xxx_tpg, se_tpg);917 918 if (enable) {919 if (atomic_read(&tpg->lport_tpg_enabled))920 return -EEXIST;921 922 atomic_set(&tpg->lport_tpg_enabled, 1);923 qlt_enable_vha(vha);924 } else {925 if (!atomic_read(&tpg->lport_tpg_enabled))926 return 0;927 928 atomic_set(&tpg->lport_tpg_enabled, 0);929 qlt_stop_phase1(vha->vha_tgt.qla_tgt);930 qlt_stop_phase2(vha->vha_tgt.qla_tgt);931 }932 933 return 0;934}935 936static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,937 char *page)938{939 return target_show_dynamic_sessions(to_tpg(item), page);940}941 942static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,943 const char *page, size_t count)944{945 struct se_portal_group *se_tpg = to_tpg(item);946 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,947 struct tcm_qla2xxx_tpg, se_tpg);948 unsigned long val;949 int ret = kstrtoul(page, 0, &val);950 951 if (ret) {952 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);953 return ret;954 }955 if (val != 0 && val != 1 && val != 3) {956 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);957 return -EINVAL;958 }959 tpg->tpg_attrib.fabric_prot_type = val;960 961 return count;962}963 964static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,965 char *page)966{967 struct se_portal_group *se_tpg = to_tpg(item);968 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,969 struct tcm_qla2xxx_tpg, se_tpg);970 971 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);972}973 974CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);975CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);976 977static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {978 &tcm_qla2xxx_tpg_attr_dynamic_sessions,979 &tcm_qla2xxx_tpg_attr_fabric_prot_type,980 NULL,981};982 983static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,984 const char *name)985{986 struct tcm_qla2xxx_lport *lport = container_of(wwn,987 struct tcm_qla2xxx_lport, lport_wwn);988 struct tcm_qla2xxx_tpg *tpg;989 unsigned long tpgt;990 int ret;991 992 if (strstr(name, "tpgt_") != name)993 return ERR_PTR(-EINVAL);994 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)995 return ERR_PTR(-EINVAL);996 997 if ((tpgt != 1)) {998 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");999 return ERR_PTR(-ENOSYS);1000 }1001 1002 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);1003 if (!tpg) {1004 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");1005 return ERR_PTR(-ENOMEM);1006 }1007 tpg->lport = lport;1008 tpg->lport_tpgt = tpgt;1009 /*1010 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic1011 * NodeACLs1012 */1013 tpg->tpg_attrib.generate_node_acls = 1;1014 tpg->tpg_attrib.demo_mode_write_protect = 1;1015 tpg->tpg_attrib.cache_dynamic_acls = 1;1016 tpg->tpg_attrib.demo_mode_login_only = 1;1017 tpg->tpg_attrib.jam_host = 0;1018 1019 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);1020 if (ret < 0) {1021 kfree(tpg);1022 return NULL;1023 }1024 1025 lport->tpg_1 = tpg;1026 1027 return &tpg->se_tpg;1028}1029 1030static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)1031{1032 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,1033 struct tcm_qla2xxx_tpg, se_tpg);1034 struct tcm_qla2xxx_lport *lport = tpg->lport;1035 struct scsi_qla_host *vha = lport->qla_vha;1036 /*1037 * Call into qla2x_target.c LLD logic to shutdown the active1038 * FC Nexuses and disable target mode operation for this qla_hw_data1039 */1040 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)1041 qlt_stop_phase1(vha->vha_tgt.qla_tgt);1042 1043 core_tpg_deregister(se_tpg);1044 /*1045 * Clear local TPG=1 pointer for non NPIV mode.1046 */1047 lport->tpg_1 = NULL;1048 kfree(tpg);1049}1050 1051static int tcm_qla2xxx_npiv_enable_tpg(struct se_portal_group *se_tpg,1052 bool enable)1053{1054 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;1055 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,1056 struct tcm_qla2xxx_lport, lport_wwn);1057 struct scsi_qla_host *vha = lport->qla_vha;1058 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,1059 struct tcm_qla2xxx_tpg, se_tpg);1060 1061 if (enable) {1062 if (atomic_read(&tpg->lport_tpg_enabled))1063 return -EEXIST;1064 1065 atomic_set(&tpg->lport_tpg_enabled, 1);1066 qlt_enable_vha(vha);1067 } else {1068 if (!atomic_read(&tpg->lport_tpg_enabled))1069 return 0;1070 1071 atomic_set(&tpg->lport_tpg_enabled, 0);1072 qlt_stop_phase1(vha->vha_tgt.qla_tgt);1073 qlt_stop_phase2(vha->vha_tgt.qla_tgt);1074 }1075 1076 return 0;1077}1078 1079static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,1080 const char *name)1081{1082 struct tcm_qla2xxx_lport *lport = container_of(wwn,1083 struct tcm_qla2xxx_lport, lport_wwn);1084 struct tcm_qla2xxx_tpg *tpg;1085 unsigned long tpgt;1086 int ret;1087 1088 if (strstr(name, "tpgt_") != name)1089 return ERR_PTR(-EINVAL);1090 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)1091 return ERR_PTR(-EINVAL);1092 1093 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);1094 if (!tpg) {1095 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");1096 return ERR_PTR(-ENOMEM);1097 }1098 tpg->lport = lport;1099 tpg->lport_tpgt = tpgt;1100 1101 /*1102 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic1103 * NodeACLs1104 */1105 tpg->tpg_attrib.generate_node_acls = 1;1106 tpg->tpg_attrib.demo_mode_write_protect = 1;1107 tpg->tpg_attrib.cache_dynamic_acls = 1;1108 tpg->tpg_attrib.demo_mode_login_only = 1;1109 1110 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);1111 if (ret < 0) {1112 kfree(tpg);1113 return NULL;1114 }1115 lport->tpg_1 = tpg;1116 return &tpg->se_tpg;1117}1118 1119/*1120 * Expected to be called with struct qla_hw_data->tgt.sess_lock held1121 */1122static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,1123 const be_id_t s_id)1124{1125 struct tcm_qla2xxx_lport *lport;1126 struct se_node_acl *se_nacl;1127 struct tcm_qla2xxx_nacl *nacl;1128 u32 key;1129 1130 lport = vha->vha_tgt.target_lport_ptr;1131 if (!lport) {1132 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");1133 dump_stack();1134 return NULL;1135 }1136 1137 key = sid_to_key(s_id);1138 pr_debug("find_sess_by_s_id: 0x%06x\n", key);1139 1140 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);1141 if (!se_nacl) {1142 pr_debug("Unable to locate s_id: 0x%06x\n", key);1143 return NULL;1144 }1145 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",1146 se_nacl, se_nacl->initiatorname);1147 1148 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);1149 if (!nacl->fc_port) {1150 pr_err("Unable to locate struct fc_port\n");1151 return NULL;1152 }1153 1154 return nacl->fc_port;1155}1156 1157/*1158 * Expected to be called with struct qla_hw_data->tgt.sess_lock held1159 */1160static void tcm_qla2xxx_set_sess_by_s_id(1161 struct tcm_qla2xxx_lport *lport,1162 struct se_node_acl *new_se_nacl,1163 struct tcm_qla2xxx_nacl *nacl,1164 struct se_session *se_sess,1165 struct fc_port *fc_port,1166 be_id_t s_id)1167{1168 u32 key;1169 void *slot;1170 int rc;1171 1172 key = sid_to_key(s_id);1173 pr_debug("set_sess_by_s_id: %06x\n", key);1174 1175 slot = btree_lookup32(&lport->lport_fcport_map, key);1176 if (!slot) {1177 if (new_se_nacl) {1178 pr_debug("Setting up new fc_port entry to new_se_nacl\n");1179 nacl->nport_id = key;1180 rc = btree_insert32(&lport->lport_fcport_map, key,1181 new_se_nacl, GFP_ATOMIC);1182 if (rc)1183 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",1184 (int)key);1185 } else {1186 pr_debug("Wiping nonexisting fc_port entry\n");1187 }1188 1189 fc_port->se_sess = se_sess;1190 nacl->fc_port = fc_port;1191 return;1192 }1193 1194 if (nacl->fc_port) {1195 if (new_se_nacl == NULL) {1196 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");1197 btree_remove32(&lport->lport_fcport_map, key);1198 nacl->fc_port = NULL;1199 return;1200 }1201 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");1202 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);1203 fc_port->se_sess = se_sess;1204 nacl->fc_port = fc_port;1205 return;1206 }1207 1208 if (new_se_nacl == NULL) {1209 pr_debug("Clearing existing fc_port entry\n");1210 btree_remove32(&lport->lport_fcport_map, key);1211 return;1212 }1213 1214 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");1215 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);1216 fc_port->se_sess = se_sess;1217 nacl->fc_port = fc_port;1218 1219 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",1220 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);1221}1222 1223/*1224 * Expected to be called with struct qla_hw_data->tgt.sess_lock held1225 */1226static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(1227 scsi_qla_host_t *vha,1228 const uint16_t loop_id)1229{1230 struct tcm_qla2xxx_lport *lport;1231 struct se_node_acl *se_nacl;1232 struct tcm_qla2xxx_nacl *nacl;1233 struct tcm_qla2xxx_fc_loopid *fc_loopid;1234 1235 lport = vha->vha_tgt.target_lport_ptr;1236 if (!lport) {1237 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");1238 dump_stack();1239 return NULL;1240 }1241 1242 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);1243 1244 fc_loopid = lport->lport_loopid_map + loop_id;1245 se_nacl = fc_loopid->se_nacl;1246 if (!se_nacl) {1247 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",1248 loop_id);1249 return NULL;1250 }1251 1252 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);1253 1254 if (!nacl->fc_port) {1255 pr_err("Unable to locate struct fc_port\n");1256 return NULL;1257 }1258 1259 return nacl->fc_port;1260}1261 1262/*1263 * Expected to be called with struct qla_hw_data->tgt.sess_lock held1264 */1265static void tcm_qla2xxx_set_sess_by_loop_id(1266 struct tcm_qla2xxx_lport *lport,1267 struct se_node_acl *new_se_nacl,1268 struct tcm_qla2xxx_nacl *nacl,1269 struct se_session *se_sess,1270 struct fc_port *fc_port,1271 uint16_t loop_id)1272{1273 struct se_node_acl *saved_nacl;1274 struct tcm_qla2xxx_fc_loopid *fc_loopid;1275 1276 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);1277 1278 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)1279 lport->lport_loopid_map)[loop_id];1280 1281 saved_nacl = fc_loopid->se_nacl;1282 if (!saved_nacl) {1283 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");1284 fc_loopid->se_nacl = new_se_nacl;1285 if (fc_port->se_sess != se_sess)1286 fc_port->se_sess = se_sess;1287 if (nacl->fc_port != fc_port)1288 nacl->fc_port = fc_port;1289 return;1290 }1291 1292 if (nacl->fc_port) {1293 if (new_se_nacl == NULL) {1294 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");1295 fc_loopid->se_nacl = NULL;1296 nacl->fc_port = NULL;1297 return;1298 }1299 1300 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");1301 fc_loopid->se_nacl = new_se_nacl;1302 if (fc_port->se_sess != se_sess)1303 fc_port->se_sess = se_sess;1304 if (nacl->fc_port != fc_port)1305 nacl->fc_port = fc_port;1306 return;1307 }1308 1309 if (new_se_nacl == NULL) {1310 pr_debug("Clearing fc_loopid->se_nacl\n");1311 fc_loopid->se_nacl = NULL;1312 return;1313 }1314 1315 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");1316 fc_loopid->se_nacl = new_se_nacl;1317 if (fc_port->se_sess != se_sess)1318 fc_port->se_sess = se_sess;1319 if (nacl->fc_port != fc_port)1320 nacl->fc_port = fc_port;1321 1322 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",1323 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);1324}1325 1326/*1327 * Should always be called with qla_hw_data->tgt.sess_lock held.1328 */1329static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,1330 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)1331{1332 struct se_session *se_sess = sess->se_sess;1333 1334 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,1335 sess, port_id_to_be_id(sess->d_id));1336 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,1337 sess, sess->loop_id);1338}1339 1340static void tcm_qla2xxx_free_session(struct fc_port *sess)1341{1342 struct qla_tgt *tgt = sess->tgt;1343 struct qla_hw_data *ha = tgt->ha;1344 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);1345 struct se_session *se_sess;1346 struct tcm_qla2xxx_lport *lport;1347 1348 se_sess = sess->se_sess;1349 if (!se_sess) {1350 pr_err("struct fc_port->se_sess is NULL\n");1351 dump_stack();1352 return;1353 }1354 1355 lport = vha->vha_tgt.target_lport_ptr;1356 if (!lport) {1357 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");1358 dump_stack();1359 return;1360 }1361 target_wait_for_sess_cmds(se_sess);1362 1363 target_remove_session(se_sess);1364}1365 1366static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,1367 struct se_session *se_sess, void *p)1368{1369 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,1370 struct tcm_qla2xxx_tpg, se_tpg);1371 struct tcm_qla2xxx_lport *lport = tpg->lport;1372 struct qla_hw_data *ha = lport->qla_vha->hw;1373 struct se_node_acl *se_nacl = se_sess->se_node_acl;1374 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,1375 struct tcm_qla2xxx_nacl, se_node_acl);1376 struct fc_port *qlat_sess = p;1377 uint16_t loop_id = qlat_sess->loop_id;1378 unsigned long flags;1379 1380 /*1381 * And now setup se_nacl and session pointers into HW lport internal1382 * mappings for fabric S_ID and LOOP_ID.1383 */1384 spin_lock_irqsave(&ha->tgt.sess_lock, flags);1385 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,1386 port_id_to_be_id(qlat_sess->d_id));1387 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,1388 se_sess, qlat_sess, loop_id);1389 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);1390 1391 return 0;1392}1393 1394/*1395 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()1396 * to locate struct se_node_acl1397 */1398static int tcm_qla2xxx_check_initiator_node_acl(1399 scsi_qla_host_t *vha,1400 unsigned char *fc_wwpn,1401 struct fc_port *qlat_sess)1402{1403 struct qla_hw_data *ha = vha->hw;1404 struct tcm_qla2xxx_lport *lport;1405 struct tcm_qla2xxx_tpg *tpg;1406 struct se_session *se_sess;1407 unsigned char port_name[36];1408 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :1409 TCM_QLA2XXX_DEFAULT_TAGS;1410 1411 lport = vha->vha_tgt.target_lport_ptr;1412 if (!lport) {1413 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");1414 dump_stack();1415 return -EINVAL;1416 }1417 /*1418 * Locate the TPG=1 reference..1419 */1420 tpg = lport->tpg_1;1421 if (!tpg) {1422 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");1423 return -EINVAL;1424 }1425 /*1426 * Format the FCP Initiator port_name into colon seperated values to1427 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.1428 */1429 memset(&port_name, 0, 36);1430 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);1431 /*1432 * Locate our struct se_node_acl either from an explict NodeACL created1433 * via ConfigFS, or via running in TPG demo mode.1434 */1435 se_sess = target_setup_session(&tpg->se_tpg, num_tags,1436 sizeof(struct qla_tgt_cmd),1437 TARGET_PROT_ALL, port_name,1438 qlat_sess, tcm_qla2xxx_session_cb);1439 if (IS_ERR(se_sess))1440 return PTR_ERR(se_sess);1441 1442 return 0;1443}1444 1445static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,1446 uint16_t loop_id, bool conf_compl_supported)1447{1448 struct qla_tgt *tgt = sess->tgt;1449 struct qla_hw_data *ha = tgt->ha;1450 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);1451 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;1452 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;1453 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,1454 struct tcm_qla2xxx_nacl, se_node_acl);1455 u32 key;1456 1457 1458 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)1459 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",1460 sess, sess->port_name,1461 sess->loop_id, loop_id, sess->d_id.b.domain,1462 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,1463 s_id.b.area, s_id.b.al_pa);1464 1465 if (sess->loop_id != loop_id) {1466 /*1467 * Because we can shuffle loop IDs around and we1468 * update different sessions non-atomically, we might1469 * have overwritten this session's old loop ID1470 * already, and we might end up overwriting some other1471 * session that will be updated later. So we have to1472 * be extra careful and we can't warn about those things...1473 */1474 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)1475 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;1476 1477 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;1478 1479 sess->loop_id = loop_id;1480 }1481 1482 if (sess->d_id.b24 != s_id.b24) {1483 key = (((u32) sess->d_id.b.domain << 16) |1484 ((u32) sess->d_id.b.area << 8) |1485 ((u32) sess->d_id.b.al_pa));1486 1487 if (btree_lookup32(&lport->lport_fcport_map, key))1488 WARN(btree_remove32(&lport->lport_fcport_map, key) !=1489 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",1490 sess->d_id.b.domain, sess->d_id.b.area,1491 sess->d_id.b.al_pa);1492 else1493 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",1494 sess->d_id.b.domain, sess->d_id.b.area,1495 sess->d_id.b.al_pa);1496 1497 key = (((u32) s_id.b.domain << 16) |1498 ((u32) s_id.b.area << 8) |1499 ((u32) s_id.b.al_pa));1500 1501 if (btree_lookup32(&lport->lport_fcport_map, key)) {1502 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",1503 s_id.b.domain, s_id.b.area, s_id.b.al_pa);1504 btree_update32(&lport->lport_fcport_map, key, se_nacl);1505 } else {1506 btree_insert32(&lport->lport_fcport_map, key, se_nacl,1507 GFP_ATOMIC);1508 }1509 1510 sess->d_id = s_id;1511 nacl->nport_id = key;1512 }1513 1514 sess->conf_compl_supported = conf_compl_supported;1515 1516}1517 1518/*1519 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.1520 */1521static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = {1522 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,1523 .handle_cmd = tcm_qla2xxx_handle_cmd,1524 .handle_data = tcm_qla2xxx_handle_data,1525 .handle_tmr = tcm_qla2xxx_handle_tmr,1526 .get_cmd = tcm_qla2xxx_get_cmd,1527 .rel_cmd = tcm_qla2xxx_rel_cmd,1528 .free_cmd = tcm_qla2xxx_free_cmd,1529 .free_mcmd = tcm_qla2xxx_free_mcmd,1530 .free_session = tcm_qla2xxx_free_session,1531 .update_sess = tcm_qla2xxx_update_sess,1532 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,1533 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,1534 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,1535 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,1536 .put_sess = tcm_qla2xxx_put_sess,1537 .shutdown_sess = tcm_qla2xxx_shutdown_sess,1538 .get_dif_tags = tcm_qla2xxx_dif_tags,1539 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags,1540};1541 1542static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)1543{1544 int rc;1545 size_t map_sz;1546 1547 rc = btree_init32(&lport->lport_fcport_map);1548 if (rc) {1549 pr_err("Unable to initialize lport->lport_fcport_map btree\n");1550 return rc;1551 }1552 1553 map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid));1554 1555 lport->lport_loopid_map = vzalloc(map_sz);1556 if (!lport->lport_loopid_map) {1557 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz);1558 btree_destroy32(&lport->lport_fcport_map);1559 return -ENOMEM;1560 }1561 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz);1562 return 0;1563}1564 1565static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,1566 void *target_lport_ptr,1567 u64 npiv_wwpn, u64 npiv_wwnn)1568{1569 struct qla_hw_data *ha = vha->hw;1570 struct tcm_qla2xxx_lport *lport =1571 (struct tcm_qla2xxx_lport *)target_lport_ptr;1572 /*1573 * Setup tgt_ops, local pointer to vha and target_lport_ptr1574 */1575 ha->tgt.tgt_ops = &tcm_qla2xxx_template;1576 vha->vha_tgt.target_lport_ptr = target_lport_ptr;1577 lport->qla_vha = vha;1578 1579 return 0;1580}1581 1582static struct se_wwn *tcm_qla2xxx_make_lport(1583 struct target_fabric_configfs *tf,1584 struct config_group *group,1585 const char *name)1586{1587 struct tcm_qla2xxx_lport *lport;1588 u64 wwpn;1589 int ret = -ENODEV;1590 1591 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)1592 return ERR_PTR(-EINVAL);1593 1594 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);1595 if (!lport) {1596 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");1597 return ERR_PTR(-ENOMEM);1598 }1599 lport->lport_wwpn = wwpn;1600 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,1601 wwpn);1602 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);1603 1604 ret = tcm_qla2xxx_init_lport(lport);1605 if (ret != 0)1606 goto out;1607 1608 ret = qlt_lport_register(lport, wwpn, 0, 0,1609 tcm_qla2xxx_lport_register_cb);1610 if (ret != 0)1611 goto out_lport;1612 1613 return &lport->lport_wwn;1614out_lport:1615 vfree(lport->lport_loopid_map);1616 btree_destroy32(&lport->lport_fcport_map);1617out:1618 kfree(lport);1619 return ERR_PTR(ret);1620}1621 1622static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)1623{1624 struct tcm_qla2xxx_lport *lport = container_of(wwn,1625 struct tcm_qla2xxx_lport, lport_wwn);1626 struct scsi_qla_host *vha = lport->qla_vha;1627 struct se_node_acl *node;1628 u32 key = 0;1629 1630 /*1631 * Call into qla2x_target.c LLD logic to complete the1632 * shutdown of struct qla_tgt after the call to1633 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..1634 */1635 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)1636 qlt_stop_phase2(vha->vha_tgt.qla_tgt);1637 1638 qlt_lport_deregister(vha);1639 1640 vfree(lport->lport_loopid_map);1641 btree_for_each_safe32(&lport->lport_fcport_map, key, node)1642 btree_remove32(&lport->lport_fcport_map, key);1643 btree_destroy32(&lport->lport_fcport_map);1644 kfree(lport);1645}1646 1647static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,1648 void *target_lport_ptr,1649 u64 npiv_wwpn, u64 npiv_wwnn)1650{1651 struct fc_vport *vport;1652 struct Scsi_Host *sh = base_vha->host;1653 struct scsi_qla_host *npiv_vha;1654 struct tcm_qla2xxx_lport *lport =1655 (struct tcm_qla2xxx_lport *)target_lport_ptr;1656 struct tcm_qla2xxx_lport *base_lport =1657 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;1658 struct fc_vport_identifiers vport_id;1659 1660 if (qla_ini_mode_enabled(base_vha)) {1661 pr_err("qla2xxx base_vha not enabled for target mode\n");1662 return -EPERM;1663 }1664 1665 if (!base_lport || !base_lport->tpg_1 ||1666 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {1667 pr_err("qla2xxx base_lport or tpg_1 not available\n");1668 return -EPERM;1669 }1670 1671 memset(&vport_id, 0, sizeof(vport_id));1672 vport_id.port_name = npiv_wwpn;1673 vport_id.node_name = npiv_wwnn;1674 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;1675 vport_id.vport_type = FC_PORTTYPE_NPIV;1676 vport_id.disable = false;1677 1678 vport = fc_vport_create(sh, 0, &vport_id);1679 if (!vport) {1680 pr_err("fc_vport_create failed for qla2xxx_npiv\n");1681 return -ENODEV;1682 }1683 /*1684 * Setup local pointer to NPIV vhba + target_lport_ptr1685 */1686 npiv_vha = (struct scsi_qla_host *)vport->dd_data;1687 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;1688 lport->qla_vha = npiv_vha;1689 scsi_host_get(npiv_vha->host);1690 return 0;1691}1692 1693 1694static struct se_wwn *tcm_qla2xxx_npiv_make_lport(1695 struct target_fabric_configfs *tf,1696 struct config_group *group,1697 const char *name)1698{1699 struct tcm_qla2xxx_lport *lport;1700 u64 phys_wwpn, npiv_wwpn, npiv_wwnn;1701 char *p, tmp[128];1702 int ret;1703 1704 snprintf(tmp, 128, "%s", name);1705 1706 p = strchr(tmp, '@');1707 if (!p) {1708 pr_err("Unable to locate NPIV '@' separator\n");1709 return ERR_PTR(-EINVAL);1710 }1711 *p++ = '\0';1712 1713 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)1714 return ERR_PTR(-EINVAL);1715 1716 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,1717 &npiv_wwpn, &npiv_wwnn) < 0)1718 return ERR_PTR(-EINVAL);1719 1720 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);1721 if (!lport) {1722 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");1723 return ERR_PTR(-ENOMEM);1724 }1725 lport->lport_npiv_wwpn = npiv_wwpn;1726 lport->lport_npiv_wwnn = npiv_wwnn;1727 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);1728 1729 ret = tcm_qla2xxx_init_lport(lport);1730 if (ret != 0)1731 goto out;1732 1733 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,1734 tcm_qla2xxx_lport_register_npiv_cb);1735 if (ret != 0)1736 goto out_lport;1737 1738 return &lport->lport_wwn;1739out_lport:1740 vfree(lport->lport_loopid_map);1741 btree_destroy32(&lport->lport_fcport_map);1742out:1743 kfree(lport);1744 return ERR_PTR(ret);1745}1746 1747static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)1748{1749 struct tcm_qla2xxx_lport *lport = container_of(wwn,1750 struct tcm_qla2xxx_lport, lport_wwn);1751 struct scsi_qla_host *npiv_vha = lport->qla_vha;1752 struct qla_hw_data *ha = npiv_vha->hw;1753 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);1754 1755 scsi_host_put(npiv_vha->host);1756 /*1757 * Notify libfc that we want to release the vha->fc_vport1758 */1759 fc_vport_terminate(npiv_vha->fc_vport);1760 scsi_host_put(base_vha->host);1761 kfree(lport);1762}1763 1764 1765static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,1766 char *page)1767{1768 return sprintf(page,1769 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",1770 QLA2XXX_VERSION, utsname()->sysname,1771 utsname()->machine, utsname()->release);1772}1773 1774CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);1775 1776static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {1777 &tcm_qla2xxx_wwn_attr_version,1778 NULL,1779};1780 1781static const struct target_core_fabric_ops tcm_qla2xxx_ops = {1782 .module = THIS_MODULE,1783 .fabric_name = "qla2xxx",1784 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),1785 /*1786 * XXX: Limit assumes single page per scatter-gather-list entry.1787 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=40961788 */1789 .max_data_sg_nents = 1200,1790 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,1791 .tpg_get_tag = tcm_qla2xxx_get_tag,1792 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,1793 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,1794 .tpg_check_demo_mode_write_protect =1795 tcm_qla2xxx_check_demo_write_protect,1796 .tpg_check_prod_mode_write_protect =1797 tcm_qla2xxx_check_prod_write_protect,1798 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,1799 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,1800 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,1801 .check_stop_free = tcm_qla2xxx_check_stop_free,1802 .release_cmd = tcm_qla2xxx_release_cmd,1803 .close_session = tcm_qla2xxx_close_session,1804 .sess_get_initiator_sid = NULL,1805 .write_pending = tcm_qla2xxx_write_pending,1806 .get_cmd_state = tcm_qla2xxx_get_cmd_state,1807 .queue_data_in = tcm_qla2xxx_queue_data_in,1808 .queue_status = tcm_qla2xxx_queue_status,1809 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,1810 .aborted_task = tcm_qla2xxx_aborted_task,1811 /*1812 * Setup function pointers for generic logic in1813 * target_core_fabric_configfs.c1814 */1815 .fabric_make_wwn = tcm_qla2xxx_make_lport,1816 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,1817 .fabric_make_tpg = tcm_qla2xxx_make_tpg,1818 .fabric_enable_tpg = tcm_qla2xxx_enable_tpg,1819 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,1820 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,1821 1822 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,1823 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,1824 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,1825 1826 .default_submit_type = TARGET_DIRECT_SUBMIT,1827 .direct_submit_supp = 1,1828};1829 1830static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {1831 .module = THIS_MODULE,1832 .fabric_name = "qla2xxx_npiv",1833 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl),1834 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,1835 .tpg_get_tag = tcm_qla2xxx_get_tag,1836 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,1837 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,1838 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,1839 .tpg_check_prod_mode_write_protect =1840 tcm_qla2xxx_check_prod_write_protect,1841 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,1842 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,1843 .check_stop_free = tcm_qla2xxx_check_stop_free,1844 .release_cmd = tcm_qla2xxx_release_cmd,1845 .close_session = tcm_qla2xxx_close_session,1846 .sess_get_initiator_sid = NULL,1847 .write_pending = tcm_qla2xxx_write_pending,1848 .get_cmd_state = tcm_qla2xxx_get_cmd_state,1849 .queue_data_in = tcm_qla2xxx_queue_data_in,1850 .queue_status = tcm_qla2xxx_queue_status,1851 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,1852 .aborted_task = tcm_qla2xxx_aborted_task,1853 /*1854 * Setup function pointers for generic logic in1855 * target_core_fabric_configfs.c1856 */1857 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,1858 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,1859 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,1860 .fabric_enable_tpg = tcm_qla2xxx_npiv_enable_tpg,1861 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,1862 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,1863 1864 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,1865 1866 .default_submit_type = TARGET_DIRECT_SUBMIT,1867 .direct_submit_supp = 1,1868};1869 1870static int tcm_qla2xxx_register_configfs(void)1871{1872 int ret;1873 1874 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",1875 QLA2XXX_VERSION, utsname()->sysname,1876 utsname()->machine, utsname()->release);1877 1878 ret = target_register_template(&tcm_qla2xxx_ops);1879 if (ret)1880 return ret;1881 1882 ret = target_register_template(&tcm_qla2xxx_npiv_ops);1883 if (ret)1884 goto out_fabric;1885 1886 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",1887 WQ_MEM_RECLAIM, 0);1888 if (!tcm_qla2xxx_free_wq) {1889 ret = -ENOMEM;1890 goto out_fabric_npiv;1891 }1892 1893 return 0;1894 1895out_fabric_npiv:1896 target_unregister_template(&tcm_qla2xxx_npiv_ops);1897out_fabric:1898 target_unregister_template(&tcm_qla2xxx_ops);1899 return ret;1900}1901 1902static void tcm_qla2xxx_deregister_configfs(void)1903{1904 destroy_workqueue(tcm_qla2xxx_free_wq);1905 1906 target_unregister_template(&tcm_qla2xxx_ops);1907 target_unregister_template(&tcm_qla2xxx_npiv_ops);1908}1909 1910static int __init tcm_qla2xxx_init(void)1911{1912 int ret;1913 1914 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64);1915 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64);1916 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32);1917 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64);1918 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12);1919 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4);1920 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64);1921 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);1922 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64);1923 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64);1924 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);1925 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24);1926 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24);1927 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64);1928 1929 ret = tcm_qla2xxx_register_configfs();1930 if (ret < 0)1931 return ret;1932 1933 return 0;1934}1935 1936static void __exit tcm_qla2xxx_exit(void)1937{1938 tcm_qla2xxx_deregister_configfs();1939}1940 1941MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");1942MODULE_LICENSE("GPL");1943module_init(tcm_qla2xxx_init);1944module_exit(tcm_qla2xxx_exit);1945