| /******************************************************************************* |
| * 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/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 <target/target_core_fabric_configfs.h> |
| #include <target/target_core_configfs.h> |
| #include <target/configfs_macros.h> |
| |
| #include "qla_def.h" |
| #include "qla_target.h" |
| #include "tcm_qla2xxx.h" |
| |
| struct workqueue_struct *tcm_qla2xxx_free_wq; |
| struct workqueue_struct *tcm_qla2xxx_cmd_wq; |
| |
| static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg) |
| { |
| return 1; |
| } |
| |
| static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg) |
| { |
| return 0; |
| } |
| |
| /* |
| * 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') |
| 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 ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len, |
| u64 wwpn, u64 wwnn) |
| { |
| u8 b[8], b2[8]; |
| |
| put_unaligned_be64(wwpn, b); |
| put_unaligned_be64(wwnn, b2); |
| return snprintf(buf, len, |
| "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x," |
| "%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], |
| b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]); |
| } |
| |
| static char *tcm_qla2xxx_npiv_get_fabric_name(void) |
| { |
| return "qla2xxx_npiv"; |
| } |
| |
| static u8 tcm_qla2xxx_get_fabric_proto_ident(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; |
| u8 proto_id; |
| |
| switch (lport->lport_proto_id) { |
| case SCSI_PROTOCOL_FCP: |
| default: |
| proto_id = fc_get_fabric_proto_ident(se_tpg); |
| break; |
| } |
| |
| return proto_id; |
| } |
| |
| 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 char *tcm_qla2xxx_npiv_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_npiv_name[0]; |
| } |
| |
| 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 u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) |
| { |
| return 1; |
| } |
| |
| static u32 tcm_qla2xxx_get_pr_transport_id( |
| struct se_portal_group *se_tpg, |
| struct se_node_acl *se_nacl, |
| struct t10_pr_registration *pr_reg, |
| int *format_code, |
| unsigned char *buf) |
| { |
| struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, |
| struct tcm_qla2xxx_tpg, se_tpg); |
| struct tcm_qla2xxx_lport *lport = tpg->lport; |
| int ret = 0; |
| |
| switch (lport->lport_proto_id) { |
| case SCSI_PROTOCOL_FCP: |
| default: |
| ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, |
| format_code, buf); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static u32 tcm_qla2xxx_get_pr_transport_id_len( |
| struct se_portal_group *se_tpg, |
| struct se_node_acl *se_nacl, |
| struct t10_pr_registration *pr_reg, |
| int *format_code) |
| { |
| struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, |
| struct tcm_qla2xxx_tpg, se_tpg); |
| struct tcm_qla2xxx_lport *lport = tpg->lport; |
| int ret = 0; |
| |
| switch (lport->lport_proto_id) { |
| case SCSI_PROTOCOL_FCP: |
| default: |
| ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, |
| format_code); |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static char *tcm_qla2xxx_parse_pr_out_transport_id( |
| struct se_portal_group *se_tpg, |
| const char *buf, |
| u32 *out_tid_len, |
| char **port_nexus_ptr) |
| { |
| struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, |
| struct tcm_qla2xxx_tpg, se_tpg); |
| struct tcm_qla2xxx_lport *lport = tpg->lport; |
| char *tid = NULL; |
| |
| switch (lport->lport_proto_id) { |
| case SCSI_PROTOCOL_FCP: |
| default: |
| tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, |
| port_nexus_ptr); |
| break; |
| } |
| |
| return tid; |
| } |
| |
| 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 struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( |
| struct se_portal_group *se_tpg) |
| { |
| struct tcm_qla2xxx_nacl *nacl; |
| |
| nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); |
| if (!nacl) { |
| pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n"); |
| return NULL; |
| } |
| |
| return &nacl->se_node_acl; |
| } |
| |
| static void tcm_qla2xxx_release_fabric_acl( |
| struct se_portal_group *se_tpg, |
| struct se_node_acl *se_nacl) |
| { |
| struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, |
| struct tcm_qla2xxx_nacl, se_node_acl); |
| kfree(nacl); |
| } |
| |
| 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); |
| |
| 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) |
| { |
| 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) |
| { |
| return target_put_sess_cmd(se_cmd->se_sess, 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->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; |
| |
| /* |
| * 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, |
| 3000); |
| 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 u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) |
| { |
| struct qla_tgt_cmd *cmd = container_of(se_cmd, |
| struct qla_tgt_cmd, se_cmd); |
| |
| return cmd->tag; |
| } |
| |
| static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) |
| { |
| 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. |
| */ |
| 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; |
| } |
| |
| 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) |
| { |
| INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_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->bufflen = se_cmd->data_length; |
| cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); |
| cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); |
| |
| cmd->sg_cnt = se_cmd->t_data_nents; |
| cmd->sg = se_cmd->t_data_sg; |
| cmd->offset = 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); |
| cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); |
| |
| 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); |
| } |
| |
| /* Local pointer to allocated TCM configfs fabric module */ |
| struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; |
| struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; |
| |
| 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); |
| WARN_ON(node && (node != se_nacl)); |
| |
| 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_session(struct se_session *se_sess) |
| { |
| struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; |
| struct qla_hw_data *ha = sess->vha->hw; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ha->hardware_lock, flags); |
| kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); |
| spin_unlock_irqrestore(&ha->hardware_lock, flags); |
| } |
| |
| static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) |
| { |
| 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 struct se_node_acl *tcm_qla2xxx_make_nodeacl( |
| struct se_portal_group *se_tpg, |
| struct config_group *group, |
| const char *name) |
| { |
| struct se_node_acl *se_nacl, *se_nacl_new; |
| struct tcm_qla2xxx_nacl *nacl; |
| u64 wwnn; |
| u32 qla2xxx_nexus_depth; |
| |
| if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) |
| return ERR_PTR(-EINVAL); |
| |
| se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); |
| if (!se_nacl_new) |
| return ERR_PTR(-ENOMEM); |
| /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ |
| qla2xxx_nexus_depth = 1; |
| |
| /* |
| * se_nacl_new may be released by core_tpg_add_initiator_node_acl() |
| * when converting a NodeACL from demo mode -> explict |
| */ |
| se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, |
| name, qla2xxx_nexus_depth); |
| if (IS_ERR(se_nacl)) { |
| tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); |
| return se_nacl; |
| } |
| /* |
| * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN |
| */ |
| nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); |
| nacl->nport_wwnn = wwnn; |
| tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); |
| |
| return se_nacl; |
| } |
| |
| static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) |
| { |
| struct se_portal_group *se_tpg = se_acl->se_tpg; |
| struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, |
| struct tcm_qla2xxx_nacl, se_node_acl); |
| |
| core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); |
| kfree(nacl); |
| } |
| |
| /* Start items for tcm_qla2xxx_tpg_attrib_cit */ |
| |
| #define DEF_QLA_TPG_ATTRIB(name) \ |
| \ |
| static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ |
| struct se_portal_group *se_tpg, \ |
| char *page) \ |
| { \ |
| 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_store_##name( \ |
| struct se_portal_group *se_tpg, \ |
| const char *page, \ |
| size_t count) \ |
| { \ |
| struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ |
| struct tcm_qla2xxx_tpg, se_tpg); \ |
| unsigned long val; \ |
| int ret; \ |
| \ |
| ret = kstrtoul(page, 0, &val); \ |
| if (ret < 0) { \ |
| pr_err("kstrtoul() failed with" \ |
| " ret: %d\n", ret); \ |
| return -EINVAL; \ |
| } \ |
| ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ |
| \ |
| return (!ret) ? count : -EINVAL; \ |
| } |
| |
| #define DEF_QLA_TPG_ATTR_BOOL(_name) \ |
| \ |
| static int tcm_qla2xxx_set_attrib_##_name( \ |
| struct tcm_qla2xxx_tpg *tpg, \ |
| unsigned long val) \ |
| { \ |
| struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ |
| \ |
| if ((val != 0) && (val != 1)) { \ |
| pr_err("Illegal boolean value %lu\n", val); \ |
| return -EINVAL; \ |
| } \ |
| \ |
| a->_name = val; \ |
| return 0; \ |
| } |
| |
| #define QLA_TPG_ATTR(_name, _mode) \ |
| TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); |
| |
| /* |
| * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls |
| */ |
| DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); |
| DEF_QLA_TPG_ATTRIB(generate_node_acls); |
| QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); |
| |
| /* |
| Define tcm_qla2xxx_attrib_s_cache_dynamic_acls |
| */ |
| DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); |
| DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); |
| QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); |
| |
| /* |
| * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect |
| */ |
| DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); |
| DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); |
| QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); |
| |
| /* |
| * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect |
| */ |
| DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); |
| DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); |
| QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); |
| |
| /* |
| * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only |
| */ |
| DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); |
| DEF_QLA_TPG_ATTRIB(demo_mode_login_only); |
| QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); |
| |
| static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { |
| &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, |
| &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, |
| &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, |
| &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, |
| &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, |
| NULL, |
| }; |
| |
| /* End items for tcm_qla2xxx_tpg_attrib_cit */ |
| |
| static ssize_t tcm_qla2xxx_tpg_show_enable( |
| struct se_portal_group *se_tpg, |
| char *page) |
| { |
| 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 ssize_t tcm_qla2xxx_tpg_store_enable( |
| struct se_portal_group *se_tpg, |
| const char *page, |
| size_t count) |
| { |
| 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 qla_hw_data *ha = vha->hw; |
| 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) { |
| atomic_set(&tpg->lport_tpg_enabled, 1); |
| qlt_enable_vha(vha); |
| } else { |
| if (!ha->tgt.qla_tgt) { |
| pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n"); |
| return -ENODEV; |
| } |
| atomic_set(&tpg->lport_tpg_enabled, 0); |
| qlt_stop_phase1(ha->tgt.qla_tgt); |
| } |
| |
| return count; |
| } |
| |
| TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); |
| |
| static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { |
| &tcm_qla2xxx_tpg_enable.attr, |
| 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 (!lport->qla_npiv_vp && (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(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, |
| &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); |
| if (ret < 0) { |
| kfree(tpg); |
| return NULL; |
| } |
| /* |
| * Setup local TPG=1 pointer for non NPIV mode. |
| */ |
| if (lport->qla_npiv_vp == 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; |
| struct qla_hw_data *ha = vha->hw; |
| /* |
| * Call into qla2x_target.c LLD logic to shutdown the active |
| * FC Nexuses and disable target mode operation for this qla_hw_data |
| */ |
| if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop) |
| qlt_stop_phase1(ha->tgt.qla_tgt); |
| |
| core_tpg_deregister(se_tpg); |
| /* |
| * Clear local TPG=1 pointer for non NPIV mode. |
| */ |
| if (lport->qla_npiv_vp == NULL) |
| lport->tpg_1 = NULL; |
| |
| kfree(tpg); |
| } |
| |
| 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; |
| |
| ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, |
| &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); |
| if (ret < 0) { |
| kfree(tpg); |
| return NULL; |
| } |
| 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 qla_hw_data *ha = vha->hw; |
| struct tcm_qla2xxx_lport *lport; |
| struct se_node_acl *se_nacl; |
| struct tcm_qla2xxx_nacl *nacl; |
| u32 key; |
| |
| lport = ha->tgt.target_lport_ptr; |
| if (!lport) { |
| pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); |
| dump_stack(); |
| return NULL; |
| } |
| |
| key = (((unsigned long)s_id[0] << 16) | |
| ((unsigned long)s_id[1] << 8) | |
| (unsigned long)s_id[2]); |
| 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 = (((unsigned long)s_id[0] << 16) | |
| ((unsigned long)s_id[1] << 8) | |
| (unsigned long)s_id[2]); |
| 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 qla_hw_data *ha = vha->hw; |
| struct tcm_qla2xxx_lport *lport; |
| struct se_node_acl *se_nacl; |
| struct tcm_qla2xxx_nacl *nacl; |
| struct tcm_qla2xxx_fc_loopid *fc_loopid; |
| |
| lport = ha->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; |
| struct se_session *se_sess; |
| struct se_node_acl *se_nacl; |
| struct tcm_qla2xxx_lport *lport; |
| struct tcm_qla2xxx_nacl *nacl; |
| |
| 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; |
| } |
| se_nacl = se_sess->se_node_acl; |
| nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); |
| |
| lport = ha->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; |
| |
| lport = ha->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(); |
| 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, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", |
| fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], |
| fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); |
| /* |
| * 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; |
| struct tcm_qla2xxx_lport *lport = ha->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; |
| } |
| |
| /* |
| * 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_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) |
| { |
| struct qla_hw_data *ha = vha->hw; |
| struct tcm_qla2xxx_lport *lport; |
| /* |
| * Setup local pointer to vha, NPIV VP pointer (if present) and |
| * vha->tcm_lport pointer |
| */ |
| lport = (struct tcm_qla2xxx_lport *)ha->tgt.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(&tcm_qla2xxx_template, wwpn, |
| tcm_qla2xxx_lport_register_cb, lport); |
| 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 qla_hw_data *ha = vha->hw; |
| 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 (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped) |
| qlt_stop_phase2(ha->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 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 npiv_wwpn, npiv_wwnn; |
| int ret; |
| |
| if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+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; |
| tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0], |
| TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn); |
| sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); |
| |
| /* FIXME: tcm_qla2xxx_npiv_make_lport */ |
| ret = -ENOSYS; |
| if (ret != 0) |
| goto out; |
| |
| return &lport->lport_wwn; |
| 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 *vha = lport->qla_vha; |
| struct Scsi_Host *sh = vha->host; |
| /* |
| * Notify libfc that we want to release the lport->npiv_vport |
| */ |
| fc_vport_terminate(lport->npiv_vport); |
| |
| scsi_host_put(sh); |
| kfree(lport); |
| } |
| |
| |
| static ssize_t tcm_qla2xxx_wwn_show_attr_version( |
| struct target_fabric_configfs *tf, |
| 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); |
| } |
| |
| TF_WWN_ATTR_RO(tcm_qla2xxx, version); |
| |
| static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { |
| &tcm_qla2xxx_wwn_version.attr, |
| NULL, |
| }; |
| |
| static struct target_core_fabric_ops tcm_qla2xxx_ops = { |
| .get_fabric_name = tcm_qla2xxx_get_fabric_name, |
| .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, |
| .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, |
| .tpg_get_tag = tcm_qla2xxx_get_tag, |
| .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, |
| .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, |
| .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, |
| .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, |
| .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_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, |
| .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, |
| .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, |
| .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, |
| .check_stop_free = tcm_qla2xxx_check_stop_free, |
| .release_cmd = tcm_qla2xxx_release_cmd, |
| .put_session = tcm_qla2xxx_put_session, |
| .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_task_tag = tcm_qla2xxx_get_task_tag, |
| .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, |
| /* |
| * 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_post_link = NULL, |
| .fabric_pre_unlink = NULL, |
| .fabric_make_np = NULL, |
| .fabric_drop_np = NULL, |
| .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, |
| .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, |
| }; |
| |
| static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { |
| .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, |
| .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, |
| .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn, |
| .tpg_get_tag = tcm_qla2xxx_get_tag, |
| .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, |
| .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, |
| .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, |
| .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, |
| .tpg_check_demo_mode = tcm_qla2xxx_check_false, |
| .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true, |
| .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true, |
| .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false, |
| .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, |
| .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, |
| .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, |
| .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, |
| .release_cmd = tcm_qla2xxx_release_cmd, |
| .put_session = tcm_qla2xxx_put_session, |
| .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_task_tag = tcm_qla2xxx_get_task_tag, |
| .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, |
| /* |
| * 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_post_link = NULL, |
| .fabric_pre_unlink = NULL, |
| .fabric_make_np = NULL, |
| .fabric_drop_np = NULL, |
| .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, |
| .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, |
| }; |
| |
| static int tcm_qla2xxx_register_configfs(void) |
| { |
| struct target_fabric_configfs *fabric, *npiv_fabric; |
| int ret; |
| |
| pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " |
| UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, |
| utsname()->machine); |
| /* |
| * Register the top level struct config_item_type with TCM core |
| */ |
| fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); |
| if (IS_ERR(fabric)) { |
| pr_err("target_fabric_configfs_init() failed\n"); |
| return PTR_ERR(fabric); |
| } |
| /* |
| * Setup fabric->tf_ops from our local tcm_qla2xxx_ops |
| */ |
| fabric->tf_ops = tcm_qla2xxx_ops; |
| /* |
| * Setup default attribute lists for various fabric->tf_cit_tmpl |
| */ |
| fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; |
| fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; |
| fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = |
| tcm_qla2xxx_tpg_attrib_attrs; |
| fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; |
| fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; |
| fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; |
| fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; |
| fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; |
| fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; |
| /* |
| * Register the fabric for use within TCM |
| */ |
| ret = target_fabric_configfs_register(fabric); |
| if (ret < 0) { |
| pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); |
| return ret; |
| } |
| /* |
| * Setup our local pointer to *fabric |
| */ |
| tcm_qla2xxx_fabric_configfs = fabric; |
| pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); |
| |
| /* |
| * Register the top level struct config_item_type for NPIV with TCM core |
| */ |
| npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); |
| if (IS_ERR(npiv_fabric)) { |
| pr_err("target_fabric_configfs_init() failed\n"); |
| ret = PTR_ERR(npiv_fabric); |
| goto out_fabric; |
| } |
| /* |
| * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops |
| */ |
| npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; |
| /* |
| * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl |
| */ |
| npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; |
| npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; |
| /* |
| * Register the npiv_fabric for use within TCM |
| */ |
| ret = target_fabric_configfs_register(npiv_fabric); |
| if (ret < 0) { |
| pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); |
| goto out_fabric; |
| } |
| /* |
| * Setup our local pointer to *npiv_fabric |
| */ |
| tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; |
| pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); |
| |
| 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_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); |
| out_fabric: |
| target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); |
| return ret; |
| } |
| |
| static void tcm_qla2xxx_deregister_configfs(void) |
| { |
| destroy_workqueue(tcm_qla2xxx_cmd_wq); |
| destroy_workqueue(tcm_qla2xxx_free_wq); |
| |
| target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); |
| tcm_qla2xxx_fabric_configfs = NULL; |
| pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); |
| |
| target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); |
| tcm_qla2xxx_npiv_fabric_configfs = NULL; |
| pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); |
| } |
| |
| 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 QLA2XXX series NPIV enabled fabric driver"); |
| MODULE_LICENSE("GPL"); |
| module_init(tcm_qla2xxx_init); |
| module_exit(tcm_qla2xxx_exit); |