/******************************************************************************* * This file contains tcm implementation using v4 configfs fabric infrastructure * for QLogic target mode HBAs * * (c) Copyright 2010-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@daterainc.com> * * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from * the TCM_FC / Open-FCoE.org fabric module. * * Copyright (c) 2010 Cisco Systems, Inc * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. ****************************************************************************/ #include <linux/module.h> #include <linux/moduleparam.h> #include <generated/utsrelease.h> #include <linux/utsname.h> #include <linux/vmalloc.h> #include <linux/init.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/kthread.h> #include <linux/types.h> #include <linux/string.h> #include <linux/configfs.h> #include <linux/ctype.h> #include <asm/unaligned.h> #include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_device.h> #include <scsi/scsi_cmnd.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> #include "qla_def.h" #include "qla_target.h" #include "tcm_qla2xxx.h" static struct workqueue_struct *tcm_qla2xxx_free_wq; static struct workqueue_struct *tcm_qla2xxx_cmd_wq; /* * Parse WWN. * If strict, we require lower-case hex and colon separators to be sure * the name is the same as what would be generated by ft_format_wwn() * so the name and wwn are mapped one-to-one. */ static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) { const char *cp; char c; u32 nibble; u32 byte = 0; u32 pos = 0; u32 err; *wwn = 0; for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { c = *cp; if (c == '\n' && cp[1] == '\0') continue; if (strict && pos++ == 2 && byte++ < 7) { pos = 0; if (c == ':') continue; err = 1; goto fail; } if (c == '\0') { err = 2; if (strict && byte != 8) goto fail; return cp - name; } err = 3; if (isdigit(c)) nibble = c - '0'; else if (isxdigit(c) && (islower(c) || !strict)) nibble = tolower(c) - 'a' + 10; else goto fail; *wwn = (*wwn << 4) | nibble; } err = 4; fail: pr_debug("err %u len %zu pos %u byte %u\n", err, cp - name, pos, byte); return -1; } static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) { u8 b[8]; put_unaligned_be64(wwn, b); return snprintf(buf, len, "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); } static char *tcm_qla2xxx_get_fabric_name(void) { return "qla2xxx"; } /* * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn */ static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) { unsigned int i, j; u8 wwn[8]; memset(wwn, 0, sizeof(wwn)); /* Validate and store the new name */ for (i = 0, j = 0; i < 16; i++) { int value; value = hex_to_bin(*ns++); if (value >= 0) j = (j << 4) | value; else return -EINVAL; if (i % 2) { wwn[i/2] = j & 0xff; j = 0; } } *nm = wwn_to_u64(wwn); return 0; } /* * This parsing logic follows drivers/scsi/scsi_transport_fc.c: * store_fc_host_vport_create() */ static int tcm_qla2xxx_npiv_parse_wwn( const char *name, size_t count, u64 *wwpn, u64 *wwnn) { unsigned int cnt = count; int rc; *wwpn = 0; *wwnn = 0; /* count may include a LF at end of string */ if (name[cnt-1] == '\n' || name[cnt-1] == 0) cnt--; /* validate we have enough characters for WWPN */ if ((cnt != (16+1+16)) || (name[16] != ':')) return -EINVAL; rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); if (rc != 0) return rc; rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); if (rc != 0) return rc; return 0; } static char *tcm_qla2xxx_npiv_get_fabric_name(void) { return "qla2xxx_npiv"; } static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); struct tcm_qla2xxx_lport *lport = tpg->lport; return lport->lport_naa_name; } static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->lport_tpgt; } static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.generate_node_acls; } static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.cache_dynamic_acls; } static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.demo_mode_write_protect; } static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.prod_mode_write_protect; } static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.demo_mode_login_only; } static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->tpg_attrib.fabric_prot_type; } static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return tpg->lport_tpgt; } static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) { struct qla_tgt_mgmt_cmd *mcmd = container_of(work, struct qla_tgt_mgmt_cmd, free_work); transport_generic_free_cmd(&mcmd->se_cmd, 0); } /* * Called from qla_target_template->free_mcmd(), and will call * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops * release callback. qla_hw_data->hardware_lock is expected to be held */ static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) { INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); } static void tcm_qla2xxx_complete_free(struct work_struct *work) { struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); cmd->cmd_in_wq = 0; WARN_ON(cmd->cmd_flags & BIT_16); cmd->cmd_flags |= BIT_16; transport_generic_free_cmd(&cmd->se_cmd, 0); } /* * Called from qla_target_template->free_cmd(), and will call * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops * release callback. qla_hw_data->hardware_lock is expected to be held */ static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) { cmd->cmd_in_wq = 1; INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); queue_work(tcm_qla2xxx_free_wq, &cmd->work); } /* * Called from struct target_core_fabric_ops->check_stop_free() context */ static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd; if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); cmd->cmd_flags |= BIT_14; } return target_put_sess_cmd(se_cmd); } /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying * fabric descriptor @se_cmd command to release */ static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd; if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, struct qla_tgt_mgmt_cmd, se_cmd); qlt_free_mcmd(mcmd); return; } cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); qlt_free_cmd(cmd); } static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) { struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; struct scsi_qla_host *vha; unsigned long flags; BUG_ON(!sess); vha = sess->vha; spin_lock_irqsave(&vha->hw->hardware_lock, flags); target_sess_cmd_list_set_waiting(se_sess); spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); return 1; } static void tcm_qla2xxx_close_session(struct se_session *se_sess) { struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; struct scsi_qla_host *vha; unsigned long flags; BUG_ON(!sess); vha = sess->vha; spin_lock_irqsave(&vha->hw->hardware_lock, flags); qlt_unreg_sess(sess); spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); } static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) { return 0; } static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); cmd->cmd_flags |= BIT_3; cmd->bufflen = se_cmd->data_length; cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); cmd->sg_cnt = se_cmd->t_data_nents; cmd->sg = se_cmd->t_data_sg; cmd->prot_sg_cnt = se_cmd->t_prot_nents; cmd->prot_sg = se_cmd->t_prot_sg; cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; se_cmd->pi_err = 0; /* * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup * the SGL mappings into PCIe memory for incoming FCP WRITE data. */ return qlt_rdy_to_xfer(cmd); } static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) { unsigned long flags; /* * Check for WRITE_PENDING status to determine if we need to wait for * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). */ spin_lock_irqsave(&se_cmd->t_state_lock, flags); if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 3 * HZ); return 0; } spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); return 0; } static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) { return; } static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) { if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); return cmd->state; } return 0; } /* * Called from process context in qla_target.c:qlt_do_work() code */ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, unsigned char *cdb, uint32_t data_length, int fcp_task_attr, int data_dir, int bidi) { struct se_cmd *se_cmd = &cmd->se_cmd; struct se_session *se_sess; struct qla_tgt_sess *sess; int flags = TARGET_SCF_ACK_KREF; if (bidi) flags |= TARGET_SCF_BIDI_OP; sess = cmd->sess; if (!sess) { pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); return -EINVAL; } se_sess = sess->se_sess; if (!se_sess) { pr_err("Unable to locate active struct se_session\n"); return -EINVAL; } return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], cmd->unpacked_lun, data_length, fcp_task_attr, data_dir, flags); } static void tcm_qla2xxx_handle_data_work(struct work_struct *work) { struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); /* * Ensure that the complete FCP WRITE payload has been received. * Otherwise return an exception via CHECK_CONDITION status. */ cmd->cmd_in_wq = 0; cmd->cmd_flags |= BIT_11; if (!cmd->write_data_transferred) { /* * Check if se_cmd has already been aborted via LUN_RESET, and * waiting upon completion in tcm_qla2xxx_write_pending_status() */ if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { complete(&cmd->se_cmd.t_transport_stop_comp); return; } if (cmd->se_cmd.pi_err) transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); else transport_generic_request_failure(&cmd->se_cmd, TCM_CHECK_CONDITION_ABORT_CMD); return; } return target_execute_cmd(&cmd->se_cmd); } /* * Called from qla_target.c:qlt_do_ctio_completion() */ static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) { cmd->cmd_flags |= BIT_10; cmd->cmd_in_wq = 1; INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); queue_work(tcm_qla2xxx_free_wq, &cmd->work); } static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) { struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); /* take an extra kref to prevent cmd free too early. * need to wait for SCSI status/check condition to * finish responding generate by transport_generic_request_failure. */ kref_get(&cmd->se_cmd.cmd_kref); transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); } /* * Called from qla_target.c:qlt_do_ctio_completion() */ static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) { INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); queue_work(tcm_qla2xxx_free_wq, &cmd->work); } /* * Called from qla_target.c:qlt_issue_task_mgmt() */ static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, uint8_t tmr_func, uint32_t tag) { struct qla_tgt_sess *sess = mcmd->sess; struct se_cmd *se_cmd = &mcmd->se_cmd; return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); } static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); cmd->cmd_flags |= BIT_4; cmd->bufflen = se_cmd->data_length; cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); cmd->sg_cnt = se_cmd->t_data_nents; cmd->sg = se_cmd->t_data_sg; cmd->offset = 0; cmd->prot_sg_cnt = se_cmd->t_prot_nents; cmd->prot_sg = se_cmd->t_prot_sg; cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; se_cmd->pi_err = 0; /* * Now queue completed DATA_IN the qla2xxx LLD and response ring */ return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, se_cmd->scsi_status); } static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); int xmit_type = QLA_TGT_XMIT_STATUS; cmd->bufflen = se_cmd->data_length; cmd->sg = NULL; cmd->sg_cnt = 0; cmd->offset = 0; cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); if (cmd->cmd_flags & BIT_5) { pr_crit("Bit_5 already set for cmd = %p.\n", cmd); dump_stack(); } cmd->cmd_flags |= BIT_5; if (se_cmd->data_direction == DMA_FROM_DEVICE) { /* * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen * for qla_tgt_xmit_response LLD code */ if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; se_cmd->residual_count = 0; } se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; se_cmd->residual_count += se_cmd->data_length; cmd->bufflen = 0; } /* * Now queue status response to qla2xxx LLD code and response ring */ return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); } static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) { struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, struct qla_tgt_mgmt_cmd, se_cmd); pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", mcmd, se_tmr->function, se_tmr->response); /* * Do translation between TCM TM response codes and * QLA2xxx FC TM response codes. */ switch (se_tmr->response) { case TMR_FUNCTION_COMPLETE: mcmd->fc_tm_rsp = FC_TM_SUCCESS; break; case TMR_TASK_DOES_NOT_EXIST: mcmd->fc_tm_rsp = FC_TM_BAD_CMD; break; case TMR_FUNCTION_REJECTED: mcmd->fc_tm_rsp = FC_TM_REJECT; break; case TMR_LUN_DOES_NOT_EXIST: default: mcmd->fc_tm_rsp = FC_TM_FAILED; break; } /* * Queue the TM response to QLA2xxx LLD to build a * CTIO response packet. */ qlt_xmit_tm_rsp(mcmd); } static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) { struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); qlt_abort_cmd(cmd); } static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); /* * Expected to be called with struct qla_hw_data->hardware_lock held */ static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) { struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; struct se_portal_group *se_tpg = se_nacl->se_tpg; struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; struct tcm_qla2xxx_lport *lport = container_of(se_wwn, struct tcm_qla2xxx_lport, lport_wwn); struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); void *node; pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); if (WARN_ON(node && (node != se_nacl))) { /* * The nacl no longer matches what we think it should be. * Most likely a new dynamic acl has been added while * someone dropped the hardware lock. It clearly is a * bug elsewhere, but this bit can't make things worse. */ btree_insert32(&lport->lport_fcport_map, nacl->nport_id, node, GFP_ATOMIC); } pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", se_nacl, nacl->nport_wwnn, nacl->nport_id); /* * Now clear the se_nacl and session pointers from our HW lport lookup * table mapping for this initiator's fabric S_ID and LOOP_ID entries. * * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> * target_wait_for_sess_cmds() before the session waits for outstanding * I/O to complete, to avoid a race between session shutdown execution * and incoming ATIOs or TMRs picking up a stale se_node_act reference. */ tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); } static void tcm_qla2xxx_release_session(struct kref *kref) { struct se_session *se_sess = container_of(kref, struct se_session, sess_kref); qlt_unreg_sess(se_sess->fabric_sess_ptr); } static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) { if (!sess) return; assert_spin_locked(&sess->vha->hw->hardware_lock); kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); } static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) { assert_spin_locked(&sess->vha->hw->hardware_lock); target_sess_cmd_list_set_waiting(sess->se_sess); } static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, const char *name) { struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); u64 wwnn; if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) return -EINVAL; nacl->nport_wwnn = wwnn; tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); return 0; } /* Start items for tcm_qla2xxx_tpg_attrib_cit */ #define DEF_QLA_TPG_ATTRIB(name) \ \ static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ struct config_item *item, char *page) \ { \ struct se_portal_group *se_tpg = attrib_to_tpg(item); \ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ struct tcm_qla2xxx_tpg, se_tpg); \ \ return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ } \ \ static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ struct config_item *item, const char *page, size_t count) \ { \ struct se_portal_group *se_tpg = attrib_to_tpg(item); \ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ struct tcm_qla2xxx_tpg, se_tpg); \ struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ unsigned long val; \ int ret; \ \ ret = kstrtoul(page, 0, &val); \ if (ret < 0) { \ pr_err("kstrtoul() failed with" \ " ret: %d\n", ret); \ return -EINVAL; \ } \ \ if ((val != 0) && (val != 1)) { \ pr_err("Illegal boolean value %lu\n", val); \ return -EINVAL; \ } \ \ a->name = val; \ \ return count; \ } \ CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) DEF_QLA_TPG_ATTRIB(generate_node_acls); DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); DEF_QLA_TPG_ATTRIB(demo_mode_login_only); static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, NULL, }; /* End items for tcm_qla2xxx_tpg_attrib_cit */ static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, char *page) { struct se_portal_group *se_tpg = to_tpg(item); struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return snprintf(page, PAGE_SIZE, "%d\n", atomic_read(&tpg->lport_tpg_enabled)); } static void tcm_qla2xxx_depend_tpg(struct work_struct *work) { struct tcm_qla2xxx_tpg *base_tpg = container_of(work, struct tcm_qla2xxx_tpg, tpg_base_work); struct se_portal_group *se_tpg = &base_tpg->se_tpg; struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { atomic_set(&base_tpg->lport_tpg_enabled, 1); qlt_enable_vha(base_vha); } complete(&base_tpg->tpg_base_comp); } static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) { struct tcm_qla2xxx_tpg *base_tpg = container_of(work, struct tcm_qla2xxx_tpg, tpg_base_work); struct se_portal_group *se_tpg = &base_tpg->se_tpg; struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { atomic_set(&base_tpg->lport_tpg_enabled, 0); target_undepend_item(&se_tpg->tpg_group.cg_item); } complete(&base_tpg->tpg_base_comp); } static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, const char *page, size_t count) { struct se_portal_group *se_tpg = to_tpg(item); struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); unsigned long op; int rc; rc = kstrtoul(page, 0, &op); if (rc < 0) { pr_err("kstrtoul() returned %d\n", rc); return -EINVAL; } if ((op != 1) && (op != 0)) { pr_err("Illegal value for tpg_enable: %lu\n", op); return -EINVAL; } if (op) { if (atomic_read(&tpg->lport_tpg_enabled)) return -EEXIST; INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); } else { if (!atomic_read(&tpg->lport_tpg_enabled)) return count; INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); } init_completion(&tpg->tpg_base_comp); schedule_work(&tpg->tpg_base_work); wait_for_completion(&tpg->tpg_base_comp); if (op) { if (!atomic_read(&tpg->lport_tpg_enabled)) return -ENODEV; } else { if (atomic_read(&tpg->lport_tpg_enabled)) return -EPERM; } return count; } static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, char *page) { return target_show_dynamic_sessions(to_tpg(item), page); } static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, const char *page, size_t count) { struct se_portal_group *se_tpg = to_tpg(item); struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); unsigned long val; int ret = kstrtoul(page, 0, &val); if (ret) { pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); return ret; } if (val != 0 && val != 1 && val != 3) { pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); return -EINVAL; } tpg->tpg_attrib.fabric_prot_type = val; return count; } static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, char *page) { struct se_portal_group *se_tpg = to_tpg(item); struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); } CONFIGFS_ATTR_WO(tcm_qla2xxx_tpg_, enable); CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { &tcm_qla2xxx_tpg_attr_enable, &tcm_qla2xxx_tpg_attr_dynamic_sessions, &tcm_qla2xxx_tpg_attr_fabric_prot_type, NULL, }; static struct se_portal_group *tcm_qla2xxx_make_tpg( struct se_wwn *wwn, struct config_group *group, const char *name) { struct tcm_qla2xxx_lport *lport = container_of(wwn, struct tcm_qla2xxx_lport, lport_wwn); struct tcm_qla2xxx_tpg *tpg; unsigned long tpgt; int ret; if (strstr(name, "tpgt_") != name) return ERR_PTR(-EINVAL); if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) return ERR_PTR(-EINVAL); if ((tpgt != 1)) { pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); return ERR_PTR(-ENOSYS); } tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); if (!tpg) { pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); return ERR_PTR(-ENOMEM); } tpg->lport = lport; tpg->lport_tpgt = tpgt; /* * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic * NodeACLs */ tpg->tpg_attrib.generate_node_acls = 1; tpg->tpg_attrib.demo_mode_write_protect = 1; tpg->tpg_attrib.cache_dynamic_acls = 1; tpg->tpg_attrib.demo_mode_login_only = 1; ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); if (ret < 0) { kfree(tpg); return NULL; } lport->tpg_1 = tpg; return &tpg->se_tpg; } static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) { struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); struct tcm_qla2xxx_lport *lport = tpg->lport; struct scsi_qla_host *vha = lport->qla_vha; /* * Call into qla2x_target.c LLD logic to shutdown the active * FC Nexuses and disable target mode operation for this qla_hw_data */ if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) qlt_stop_phase1(vha->vha_tgt.qla_tgt); core_tpg_deregister(se_tpg); /* * Clear local TPG=1 pointer for non NPIV mode. */ lport->tpg_1 = NULL; kfree(tpg); } static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, char *page) { return tcm_qla2xxx_tpg_enable_show(item, page); } static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, const char *page, size_t count) { struct se_portal_group *se_tpg = to_tpg(item); struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; struct tcm_qla2xxx_lport *lport = container_of(se_wwn, struct tcm_qla2xxx_lport, lport_wwn); struct scsi_qla_host *vha = lport->qla_vha; struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); unsigned long op; int rc; rc = kstrtoul(page, 0, &op); if (rc < 0) { pr_err("kstrtoul() returned %d\n", rc); return -EINVAL; } if ((op != 1) && (op != 0)) { pr_err("Illegal value for tpg_enable: %lu\n", op); return -EINVAL; } if (op) { if (atomic_read(&tpg->lport_tpg_enabled)) return -EEXIST; atomic_set(&tpg->lport_tpg_enabled, 1); qlt_enable_vha(vha); } else { if (!atomic_read(&tpg->lport_tpg_enabled)) return count; atomic_set(&tpg->lport_tpg_enabled, 0); qlt_stop_phase1(vha->vha_tgt.qla_tgt); } return count; } CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { &tcm_qla2xxx_npiv_tpg_attr_enable, NULL, }; static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( struct se_wwn *wwn, struct config_group *group, const char *name) { struct tcm_qla2xxx_lport *lport = container_of(wwn, struct tcm_qla2xxx_lport, lport_wwn); struct tcm_qla2xxx_tpg *tpg; unsigned long tpgt; int ret; if (strstr(name, "tpgt_") != name) return ERR_PTR(-EINVAL); if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) return ERR_PTR(-EINVAL); tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); if (!tpg) { pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); return ERR_PTR(-ENOMEM); } tpg->lport = lport; tpg->lport_tpgt = tpgt; /* * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic * NodeACLs */ tpg->tpg_attrib.generate_node_acls = 1; tpg->tpg_attrib.demo_mode_write_protect = 1; tpg->tpg_attrib.cache_dynamic_acls = 1; tpg->tpg_attrib.demo_mode_login_only = 1; ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); if (ret < 0) { kfree(tpg); return NULL; } lport->tpg_1 = tpg; return &tpg->se_tpg; } /* * Expected to be called with struct qla_hw_data->hardware_lock held */ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( scsi_qla_host_t *vha, const uint8_t *s_id) { struct tcm_qla2xxx_lport *lport; struct se_node_acl *se_nacl; struct tcm_qla2xxx_nacl *nacl; u32 key; lport = vha->vha_tgt.target_lport_ptr; if (!lport) { pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); dump_stack(); return NULL; } key = sid_to_key(s_id); pr_debug("find_sess_by_s_id: 0x%06x\n", key); se_nacl = btree_lookup32(&lport->lport_fcport_map, key); if (!se_nacl) { pr_debug("Unable to locate s_id: 0x%06x\n", key); return NULL; } pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", se_nacl, se_nacl->initiatorname); nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); if (!nacl->qla_tgt_sess) { pr_err("Unable to locate struct qla_tgt_sess\n"); return NULL; } return nacl->qla_tgt_sess; } /* * Expected to be called with struct qla_hw_data->hardware_lock held */ static void tcm_qla2xxx_set_sess_by_s_id( struct tcm_qla2xxx_lport *lport, struct se_node_acl *new_se_nacl, struct tcm_qla2xxx_nacl *nacl, struct se_session *se_sess, struct qla_tgt_sess *qla_tgt_sess, uint8_t *s_id) { u32 key; void *slot; int rc; key = sid_to_key(s_id); pr_debug("set_sess_by_s_id: %06x\n", key); slot = btree_lookup32(&lport->lport_fcport_map, key); if (!slot) { if (new_se_nacl) { pr_debug("Setting up new fc_port entry to new_se_nacl\n"); nacl->nport_id = key; rc = btree_insert32(&lport->lport_fcport_map, key, new_se_nacl, GFP_ATOMIC); if (rc) printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", (int)key); } else { pr_debug("Wiping nonexisting fc_port entry\n"); } qla_tgt_sess->se_sess = se_sess; nacl->qla_tgt_sess = qla_tgt_sess; return; } if (nacl->qla_tgt_sess) { if (new_se_nacl == NULL) { pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); btree_remove32(&lport->lport_fcport_map, key); nacl->qla_tgt_sess = NULL; return; } pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); btree_update32(&lport->lport_fcport_map, key, new_se_nacl); qla_tgt_sess->se_sess = se_sess; nacl->qla_tgt_sess = qla_tgt_sess; return; } if (new_se_nacl == NULL) { pr_debug("Clearing existing fc_port entry\n"); btree_remove32(&lport->lport_fcport_map, key); return; } pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); btree_update32(&lport->lport_fcport_map, key, new_se_nacl); qla_tgt_sess->se_sess = se_sess; nacl->qla_tgt_sess = qla_tgt_sess; pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); } /* * Expected to be called with struct qla_hw_data->hardware_lock held */ static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( scsi_qla_host_t *vha, const uint16_t loop_id) { struct tcm_qla2xxx_lport *lport; struct se_node_acl *se_nacl; struct tcm_qla2xxx_nacl *nacl; struct tcm_qla2xxx_fc_loopid *fc_loopid; lport = vha->vha_tgt.target_lport_ptr; if (!lport) { pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); dump_stack(); return NULL; } pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); fc_loopid = lport->lport_loopid_map + loop_id; se_nacl = fc_loopid->se_nacl; if (!se_nacl) { pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", loop_id); return NULL; } nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); if (!nacl->qla_tgt_sess) { pr_err("Unable to locate struct qla_tgt_sess\n"); return NULL; } return nacl->qla_tgt_sess; } /* * Expected to be called with struct qla_hw_data->hardware_lock held */ static void tcm_qla2xxx_set_sess_by_loop_id( struct tcm_qla2xxx_lport *lport, struct se_node_acl *new_se_nacl, struct tcm_qla2xxx_nacl *nacl, struct se_session *se_sess, struct qla_tgt_sess *qla_tgt_sess, uint16_t loop_id) { struct se_node_acl *saved_nacl; struct tcm_qla2xxx_fc_loopid *fc_loopid; pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) lport->lport_loopid_map)[loop_id]; saved_nacl = fc_loopid->se_nacl; if (!saved_nacl) { pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); fc_loopid->se_nacl = new_se_nacl; if (qla_tgt_sess->se_sess != se_sess) qla_tgt_sess->se_sess = se_sess; if (nacl->qla_tgt_sess != qla_tgt_sess) nacl->qla_tgt_sess = qla_tgt_sess; return; } if (nacl->qla_tgt_sess) { if (new_se_nacl == NULL) { pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); fc_loopid->se_nacl = NULL; nacl->qla_tgt_sess = NULL; return; } pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); fc_loopid->se_nacl = new_se_nacl; if (qla_tgt_sess->se_sess != se_sess) qla_tgt_sess->se_sess = se_sess; if (nacl->qla_tgt_sess != qla_tgt_sess) nacl->qla_tgt_sess = qla_tgt_sess; return; } if (new_se_nacl == NULL) { pr_debug("Clearing fc_loopid->se_nacl\n"); fc_loopid->se_nacl = NULL; return; } pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); fc_loopid->se_nacl = new_se_nacl; if (qla_tgt_sess->se_sess != se_sess) qla_tgt_sess->se_sess = se_sess; if (nacl->qla_tgt_sess != qla_tgt_sess) nacl->qla_tgt_sess = qla_tgt_sess; pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); } /* * Should always be called with qla_hw_data->hardware_lock held. */ static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) { struct se_session *se_sess = sess->se_sess; unsigned char be_sid[3]; be_sid[0] = sess->s_id.b.domain; be_sid[1] = sess->s_id.b.area; be_sid[2] = sess->s_id.b.al_pa; tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, sess, be_sid); tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, sess, sess->loop_id); } static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) { struct qla_tgt *tgt = sess->tgt; struct qla_hw_data *ha = tgt->ha; scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); struct se_session *se_sess; struct tcm_qla2xxx_lport *lport; BUG_ON(in_interrupt()); se_sess = sess->se_sess; if (!se_sess) { pr_err("struct qla_tgt_sess->se_sess is NULL\n"); dump_stack(); return; } lport = vha->vha_tgt.target_lport_ptr; if (!lport) { pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); dump_stack(); return; } target_wait_for_sess_cmds(se_sess); transport_deregister_session_configfs(sess->se_sess); transport_deregister_session(sess->se_sess); } /* * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() * to locate struct se_node_acl */ static int tcm_qla2xxx_check_initiator_node_acl( scsi_qla_host_t *vha, unsigned char *fc_wwpn, void *qla_tgt_sess, uint8_t *s_id, uint16_t loop_id) { struct qla_hw_data *ha = vha->hw; struct tcm_qla2xxx_lport *lport; struct tcm_qla2xxx_tpg *tpg; struct tcm_qla2xxx_nacl *nacl; struct se_portal_group *se_tpg; struct se_node_acl *se_nacl; struct se_session *se_sess; struct qla_tgt_sess *sess = qla_tgt_sess; unsigned char port_name[36]; unsigned long flags; int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : TCM_QLA2XXX_DEFAULT_TAGS; lport = vha->vha_tgt.target_lport_ptr; if (!lport) { pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); dump_stack(); return -EINVAL; } /* * Locate the TPG=1 reference.. */ tpg = lport->tpg_1; if (!tpg) { pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); return -EINVAL; } se_tpg = &tpg->se_tpg; se_sess = transport_init_session_tags(num_tags, sizeof(struct qla_tgt_cmd), TARGET_PROT_ALL); if (IS_ERR(se_sess)) { pr_err("Unable to initialize struct se_session\n"); return PTR_ERR(se_sess); } /* * Format the FCP Initiator port_name into colon seperated values to * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. */ memset(&port_name, 0, 36); snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); /* * Locate our struct se_node_acl either from an explict NodeACL created * via ConfigFS, or via running in TPG demo mode. */ se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, port_name); if (!se_sess->se_node_acl) { transport_free_session(se_sess); return -EINVAL; } se_nacl = se_sess->se_node_acl; nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); /* * And now setup the new se_nacl and session pointers into our HW lport * mappings for fabric S_ID and LOOP_ID. */ spin_lock_irqsave(&ha->hardware_lock, flags); tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qla_tgt_sess, s_id); tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, qla_tgt_sess, loop_id); spin_unlock_irqrestore(&ha->hardware_lock, flags); /* * Finally register the new FC Nexus with TCM */ transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); return 0; } static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, uint16_t loop_id, bool conf_compl_supported) { struct qla_tgt *tgt = sess->tgt; struct qla_hw_data *ha = tgt->ha; scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); u32 key; if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", sess, sess->port_name, sess->loop_id, loop_id, sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, s_id.b.area, s_id.b.al_pa); if (sess->loop_id != loop_id) { /* * Because we can shuffle loop IDs around and we * update different sessions non-atomically, we might * have overwritten this session's old loop ID * already, and we might end up overwriting some other * session that will be updated later. So we have to * be extra careful and we can't warn about those things... */ if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; lport->lport_loopid_map[loop_id].se_nacl = se_nacl; sess->loop_id = loop_id; } if (sess->s_id.b24 != s_id.b24) { key = (((u32) sess->s_id.b.domain << 16) | ((u32) sess->s_id.b.area << 8) | ((u32) sess->s_id.b.al_pa)); if (btree_lookup32(&lport->lport_fcport_map, key)) WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); else WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); key = (((u32) s_id.b.domain << 16) | ((u32) s_id.b.area << 8) | ((u32) s_id.b.al_pa)); if (btree_lookup32(&lport->lport_fcport_map, key)) { WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", s_id.b.domain, s_id.b.area, s_id.b.al_pa); btree_update32(&lport->lport_fcport_map, key, se_nacl); } else { btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); } sess->s_id = s_id; nacl->nport_id = key; } sess->conf_compl_supported = conf_compl_supported; /* Reset logout parameters to default */ sess->logout_on_delete = 1; sess->keep_nport_handle = 0; } /* * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. */ static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { .handle_cmd = tcm_qla2xxx_handle_cmd, .handle_data = tcm_qla2xxx_handle_data, .handle_dif_err = tcm_qla2xxx_handle_dif_err, .handle_tmr = tcm_qla2xxx_handle_tmr, .free_cmd = tcm_qla2xxx_free_cmd, .free_mcmd = tcm_qla2xxx_free_mcmd, .free_session = tcm_qla2xxx_free_session, .update_sess = tcm_qla2xxx_update_sess, .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, .put_sess = tcm_qla2xxx_put_sess, .shutdown_sess = tcm_qla2xxx_shutdown_sess, }; static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) { int rc; rc = btree_init32(&lport->lport_fcport_map); if (rc) { pr_err("Unable to initialize lport->lport_fcport_map btree\n"); return rc; } lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); if (!lport->lport_loopid_map) { pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); btree_destroy32(&lport->lport_fcport_map); return -ENOMEM; } memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); return 0; } static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, void *target_lport_ptr, u64 npiv_wwpn, u64 npiv_wwnn) { struct qla_hw_data *ha = vha->hw; struct tcm_qla2xxx_lport *lport = (struct tcm_qla2xxx_lport *)target_lport_ptr; /* * Setup tgt_ops, local pointer to vha and target_lport_ptr */ ha->tgt.tgt_ops = &tcm_qla2xxx_template; vha->vha_tgt.target_lport_ptr = target_lport_ptr; lport->qla_vha = vha; return 0; } static struct se_wwn *tcm_qla2xxx_make_lport( struct target_fabric_configfs *tf, struct config_group *group, const char *name) { struct tcm_qla2xxx_lport *lport; u64 wwpn; int ret = -ENODEV; if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) return ERR_PTR(-EINVAL); lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); if (!lport) { pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); return ERR_PTR(-ENOMEM); } lport->lport_wwpn = wwpn; tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, wwpn); sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); ret = tcm_qla2xxx_init_lport(lport); if (ret != 0) goto out; ret = qlt_lport_register(lport, wwpn, 0, 0, tcm_qla2xxx_lport_register_cb); if (ret != 0) goto out_lport; return &lport->lport_wwn; out_lport: vfree(lport->lport_loopid_map); btree_destroy32(&lport->lport_fcport_map); out: kfree(lport); return ERR_PTR(ret); } static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) { struct tcm_qla2xxx_lport *lport = container_of(wwn, struct tcm_qla2xxx_lport, lport_wwn); struct scsi_qla_host *vha = lport->qla_vha; struct se_node_acl *node; u32 key = 0; /* * Call into qla2x_target.c LLD logic to complete the * shutdown of struct qla_tgt after the call to * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. */ if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) qlt_stop_phase2(vha->vha_tgt.qla_tgt); qlt_lport_deregister(vha); vfree(lport->lport_loopid_map); btree_for_each_safe32(&lport->lport_fcport_map, key, node) btree_remove32(&lport->lport_fcport_map, key); btree_destroy32(&lport->lport_fcport_map); kfree(lport); } static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, void *target_lport_ptr, u64 npiv_wwpn, u64 npiv_wwnn) { struct fc_vport *vport; struct Scsi_Host *sh = base_vha->host; struct scsi_qla_host *npiv_vha; struct tcm_qla2xxx_lport *lport = (struct tcm_qla2xxx_lport *)target_lport_ptr; struct tcm_qla2xxx_lport *base_lport = (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; struct fc_vport_identifiers vport_id; if (!qla_tgt_mode_enabled(base_vha)) { pr_err("qla2xxx base_vha not enabled for target mode\n"); return -EPERM; } if (!base_lport || !base_lport->tpg_1 || !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { pr_err("qla2xxx base_lport or tpg_1 not available\n"); return -EPERM; } memset(&vport_id, 0, sizeof(vport_id)); vport_id.port_name = npiv_wwpn; vport_id.node_name = npiv_wwnn; vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; vport_id.vport_type = FC_PORTTYPE_NPIV; vport_id.disable = false; vport = fc_vport_create(sh, 0, &vport_id); if (!vport) { pr_err("fc_vport_create failed for qla2xxx_npiv\n"); return -ENODEV; } /* * Setup local pointer to NPIV vhba + target_lport_ptr */ npiv_vha = (struct scsi_qla_host *)vport->dd_data; npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; lport->qla_vha = npiv_vha; scsi_host_get(npiv_vha->host); return 0; } static struct se_wwn *tcm_qla2xxx_npiv_make_lport( struct target_fabric_configfs *tf, struct config_group *group, const char *name) { struct tcm_qla2xxx_lport *lport; u64 phys_wwpn, npiv_wwpn, npiv_wwnn; char *p, tmp[128]; int ret; snprintf(tmp, 128, "%s", name); p = strchr(tmp, '@'); if (!p) { pr_err("Unable to locate NPIV '@' seperator\n"); return ERR_PTR(-EINVAL); } *p++ = '\0'; if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) return ERR_PTR(-EINVAL); if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, &npiv_wwpn, &npiv_wwnn) < 0) return ERR_PTR(-EINVAL); lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); if (!lport) { pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); return ERR_PTR(-ENOMEM); } lport->lport_npiv_wwpn = npiv_wwpn; lport->lport_npiv_wwnn = npiv_wwnn; sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); ret = tcm_qla2xxx_init_lport(lport); if (ret != 0) goto out; ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, tcm_qla2xxx_lport_register_npiv_cb); if (ret != 0) goto out_lport; return &lport->lport_wwn; out_lport: vfree(lport->lport_loopid_map); btree_destroy32(&lport->lport_fcport_map); out: kfree(lport); return ERR_PTR(ret); } static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) { struct tcm_qla2xxx_lport *lport = container_of(wwn, struct tcm_qla2xxx_lport, lport_wwn); struct scsi_qla_host *npiv_vha = lport->qla_vha; struct qla_hw_data *ha = npiv_vha->hw; scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); scsi_host_put(npiv_vha->host); /* * Notify libfc that we want to release the vha->fc_vport */ fc_vport_terminate(npiv_vha->fc_vport); scsi_host_put(base_vha->host); kfree(lport); } static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, char *page) { return sprintf(page, "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, utsname()->machine); } CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { &tcm_qla2xxx_wwn_attr_version, NULL, }; static const struct target_core_fabric_ops tcm_qla2xxx_ops = { .module = THIS_MODULE, .name = "qla2xxx", .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), /* * XXX: Limit assumes single page per scatter-gather-list entry. * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 */ .max_data_sg_nents = 1200, .get_fabric_name = tcm_qla2xxx_get_fabric_name, .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, .tpg_get_tag = tcm_qla2xxx_get_tag, .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_write_protect, .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_prod_write_protect, .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, .check_stop_free = tcm_qla2xxx_check_stop_free, .release_cmd = tcm_qla2xxx_release_cmd, .shutdown_session = tcm_qla2xxx_shutdown_session, .close_session = tcm_qla2xxx_close_session, .sess_get_index = tcm_qla2xxx_sess_get_index, .sess_get_initiator_sid = NULL, .write_pending = tcm_qla2xxx_write_pending, .write_pending_status = tcm_qla2xxx_write_pending_status, .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, .get_cmd_state = tcm_qla2xxx_get_cmd_state, .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c */ .fabric_make_wwn = tcm_qla2xxx_make_lport, .fabric_drop_wwn = tcm_qla2xxx_drop_lport, .fabric_make_tpg = tcm_qla2xxx_make_tpg, .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, }; static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { .module = THIS_MODULE, .name = "qla2xxx_npiv", .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, .tpg_get_tag = tcm_qla2xxx_get_tag, .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_prod_write_protect, .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, .check_stop_free = tcm_qla2xxx_check_stop_free, .release_cmd = tcm_qla2xxx_release_cmd, .shutdown_session = tcm_qla2xxx_shutdown_session, .close_session = tcm_qla2xxx_close_session, .sess_get_index = tcm_qla2xxx_sess_get_index, .sess_get_initiator_sid = NULL, .write_pending = tcm_qla2xxx_write_pending, .write_pending_status = tcm_qla2xxx_write_pending_status, .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, .get_cmd_state = tcm_qla2xxx_get_cmd_state, .queue_data_in = tcm_qla2xxx_queue_data_in, .queue_status = tcm_qla2xxx_queue_status, .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, .aborted_task = tcm_qla2xxx_aborted_task, /* * Setup function pointers for generic logic in * target_core_fabric_configfs.c */ .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, }; static int tcm_qla2xxx_register_configfs(void) { int ret; pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, utsname()->machine); ret = target_register_template(&tcm_qla2xxx_ops); if (ret) return ret; ret = target_register_template(&tcm_qla2xxx_npiv_ops); if (ret) goto out_fabric; tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", WQ_MEM_RECLAIM, 0); if (!tcm_qla2xxx_free_wq) { ret = -ENOMEM; goto out_fabric_npiv; } tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); if (!tcm_qla2xxx_cmd_wq) { ret = -ENOMEM; goto out_free_wq; } return 0; out_free_wq: destroy_workqueue(tcm_qla2xxx_free_wq); out_fabric_npiv: target_unregister_template(&tcm_qla2xxx_npiv_ops); out_fabric: target_unregister_template(&tcm_qla2xxx_ops); return ret; } static void tcm_qla2xxx_deregister_configfs(void) { destroy_workqueue(tcm_qla2xxx_cmd_wq); destroy_workqueue(tcm_qla2xxx_free_wq); target_unregister_template(&tcm_qla2xxx_ops); target_unregister_template(&tcm_qla2xxx_npiv_ops); } static int __init tcm_qla2xxx_init(void) { int ret; ret = tcm_qla2xxx_register_configfs(); if (ret < 0) return ret; return 0; } static void __exit tcm_qla2xxx_exit(void) { tcm_qla2xxx_deregister_configfs(); } MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); MODULE_LICENSE("GPL"); module_init(tcm_qla2xxx_init); module_exit(tcm_qla2xxx_exit);