From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nicholas A. Bellinger" Subject: [RFC-v4 3/3] qla2xxx: Add tcm_qla2xxx fabric module for mainline target Date: Sun, 18 Dec 2011 02:02:26 +0000 Message-ID: <1324173746-14361-4-git-send-email-nab@linux-iscsi.org> References: <1324173746-14361-1-git-send-email-nab@linux-iscsi.org> Return-path: In-Reply-To: <1324173746-14361-1-git-send-email-nab@linux-iscsi.org> Sender: target-devel-owner@vger.kernel.org To: target-devel , linux-scsi Cc: Andrew Vasquez , Giridhar Malavali , Christoph Hellwig , James Bottomley , Roland Dreier , Joern Engel , Madhuranath Iyengar , Nicholas Bellinger List-Id: linux-scsi@vger.kernel.org From: Nicholas Bellinger This patch adds support for tcm_qla2xxx fabric module code using the new qla_target.c LLD logic. This includes support for explict NodeACLs via configfs using tcm_qla2xxx_setup_nacl_from_rport() from libfc struct fc_host->rports, and demo-mode support for virtual LUN=0 access. This patch also adds support for using tcm_qla2xxx_lport->lport_fcport_map and ->lport_loopid_map to track struct se_node_acl pointers for individual 24-bit Port ID and 16-bit Loop ID values for qla_target_template ->find_sess_by_s_id() and ->find_sess_by_loop_id() used in a number of locations into the primary I/O dispatch logic in qla_target.c LLD code. The main piece for FC Nexus setup is in tcm_qla2xxx_check_initiator_node_acl(), which calls tcm_qla2xxx_set_sess_by_[s_id,loop_id]() to setup our lport->lport_fcport_map and lport_loopid_map pointers respectively, and register the new nexus with TCM via __transport_register_session(). Cc: Andrew Vasquez Cc: Giridhar Malavali Cc: Christoph Hellwig Cc: James Bottomley Cc: Roland Dreier Cc: Joern Engel Cc: Madhuranath Iyengar Signed-off-by: Nicholas A. Bellinger --- drivers/scsi/qla2xxx/Kconfig | 8 + drivers/scsi/qla2xxx/Makefile | 1 + drivers/scsi/qla2xxx/tcm_qla2xxx.c | 2059 ++++++++++++++++++++++++++++++++++++ drivers/scsi/qla2xxx/tcm_qla2xxx.h | 148 +++ 4 files changed, 2216 insertions(+), 0 deletions(-) create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.c create mode 100644 drivers/scsi/qla2xxx/tcm_qla2xxx.h diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig index 6208d56..6c3ce52 100644 --- a/drivers/scsi/qla2xxx/Kconfig +++ b/drivers/scsi/qla2xxx/Kconfig @@ -25,3 +25,11 @@ config SCSI_QLA_FC Firmware images can be retrieved from: ftp://ftp.qlogic.com/outgoing/linux/firmware/ + +config TCM_QLA2XXX + tristate "TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs" + depends on SCSI_QLA_FC && TARGET_CORE + select LIBFC + default n + ---help--- + Say Y here to enable the TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile index 702931ff..dce7d78 100644 --- a/drivers/scsi/qla2xxx/Makefile +++ b/drivers/scsi/qla2xxx/Makefile @@ -3,3 +3,4 @@ qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \ qla_nx.o qla_target.o obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o +obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx.o diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c new file mode 100644 index 0000000..dd73378 --- /dev/null +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -0,0 +1,2059 @@ +/******************************************************************************* + * This file contains tcm implementation using v4 configfs fabric infrastructure + * for QLogic target mode HBAs + * + * (c) Copyright 2010-2011 RisingTide Systems LLC. + * + * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * + * Author: Nicholas A. Bellinger + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "qla_def.h" +#include "qla_target.h" +#include "tcm_qla2xxx.h" + +extern struct workqueue_struct *tcm_qla2xxx_free_wq; +extern struct workqueue_struct *tcm_qla2xxx_cmd_wq; + +int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg) +{ + return 1; +} + +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. + */ +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; +} + +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]); +} + +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, value; + u8 wwn[8]; + + memset(wwn, 0, sizeof(wwn)); + + /* Validate and store the new name */ + for (i = 0, j = 0; i < 16; i++) { + 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() + */ +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; +} + +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]); +} + +char *tcm_qla2xxx_npiv_get_fabric_name(void) +{ + return "qla2xxx_npiv"; +} + +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; +} + +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_name[0]; +} + +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]; +} + +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; +} + +u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) +{ + return 1; +} + +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; +} + +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; +} + +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; +} + +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 QLA_TPG_ATTRIB(tpg)->generate_node_acls; +} + +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 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls; +} + +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 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect; +} + +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 QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect; +} + +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 alocate struct tcm_qla2xxx_nacl\n"); + return NULL; + } + + return &nacl->se_node_acl; +} + +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); +} + +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_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 + */ +void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) +{ + barrier(); + /* + * Handle tcm_qla2xxx_init_cmd() -> transport_get_lun_for_cmd() + * failure case where cmd->se_cmd.se_dev was not assigned, and + * a call to transport_generic_free_cmd_intr() is not possible.. + */ + if (!cmd->se_cmd.se_dev) { + target_put_sess_cmd(cmd->se_cmd.se_sess, &cmd->se_cmd); + transport_generic_free_cmd(&cmd->se_cmd, 0); + return; + } + + if (!atomic_read(&cmd->se_cmd.t_transport_complete)) + target_put_sess_cmd(cmd->se_cmd.se_sess, &cmd->se_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 + */ +int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) +{ + if (se_cmd->se_tmr_req) { + struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, + struct qla_tgt_mgmt_cmd, se_cmd); + /* + * Release the associated se_cmd->se_tmr_req and se_cmd + * TMR related state now. + */ + transport_generic_free_cmd(se_cmd, 1); + qla_tgt_free_mcmd(mcmd); + return 1; + } + 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 + */ +void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) +{ + struct qla_tgt_cmd *cmd; + + if (se_cmd->se_tmr_req != NULL) + return; + + cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); + qla_tgt_free_cmd(cmd); +} + +int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) +{ + struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; + + if (!sess) { + pr_err("se_sess->fabric_sess_ptr is NULL\n"); + dump_stack(); + return 0; + } + return 1; +} + +extern int tcm_qla2xxx_clear_nacl_from_fcport_map(struct se_node_acl *); + +void tcm_qla2xxx_close_session(struct se_session *se_sess) +{ + struct se_node_acl *se_nacl = se_sess->se_node_acl; + struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; + struct scsi_qla_host *vha; + unsigned long flags; + + if (!sess) { + pr_err("se_sess->fabric_sess_ptr is NULL\n"); + dump_stack(); + return; + } + vha = sess->vha; + + spin_lock_irqsave(&vha->hw->hardware_lock, flags); + tcm_qla2xxx_clear_nacl_from_fcport_map(se_nacl); + __qla_tgt_sess_put(sess); + spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); +} + +void tcm_qla2xxx_stop_session(struct se_session *se_sess, int sess_sleep , int conn_sleep) +{ + struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; + struct scsi_qla_host *vha; + unsigned long flags; + + if (!sess) { + pr_err("se_sess->fabric_sess_ptr is NULL\n"); + dump_stack(); + return; + } + vha = sess->vha; + + spin_lock_irqsave(&vha->hw->hardware_lock, flags); + tcm_qla2xxx_clear_nacl_from_fcport_map(se_sess->se_node_acl); + spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); +} + +void tcm_qla2xxx_reset_nexus(struct se_session *se_sess) +{ + return; +} + +int tcm_qla2xxx_sess_logged_in(struct se_session *se_sess) +{ + return 0; +} + +u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) +{ + return 0; +} + +/* + * The LIO target core uses DMA_TO_DEVICE to mean that data is going + * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean + * that data is coming from the target (eg handling a READ). However, + * this is just the opposite of what we have to tell the DMA mapping + * layer -- eg when handling a READ, the HBA will have to DMA the data + * out of memory so it can send it to the initiator, which means we + * need to use DMA_TO_DEVICE when we map the data. + */ +static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd) +{ + if (se_cmd->se_cmd_flags & SCF_BIDI) + return DMA_BIDIRECTIONAL; + + switch (se_cmd->data_direction) { + case DMA_TO_DEVICE: + return DMA_FROM_DEVICE; + case DMA_FROM_DEVICE: + return DMA_TO_DEVICE; + case DMA_NONE: + default: + return DMA_NONE; + } +} + +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 = tcm_qla2xxx_mapping_dir(se_cmd); + + /* + * Setup the struct se_task->task_sg[] chained SG list + */ + transport_do_task_sg_chain(se_cmd); + cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no; + cmd->sg = se_cmd->t_tasks_sg_chained; + + /* + * qla_target.c:qla_tgt_rdy_to_xfer() will call pci_map_sg() to setup + * the SGL mappings into PCIe memory for incoming FCP WRITE data. + */ + return qla_tgt_rdy_to_xfer(cmd); +} + +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; +} + +void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) +{ + return; +} + +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; +} + +int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) +{ + return 0; +} + +/* + * Called from process context in qla_target.c:qla_tgt_do_work() code + */ +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 rc, 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; + } + + rc = target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], + cmd->unpacked_lun, data_length, fcp_task_attr, + data_dir, flags); + if (rc != 0) + return -EINVAL; + + return 0; +} + +void tcm_qla2xxx_do_rsp(struct work_struct *work) +{ + struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); + /* + * Dispatch ->queue_status from workqueue process context + */ + transport_send_check_condition_and_sense(&cmd->se_cmd, + cmd->se_cmd.scsi_sense_reason, 0); +} + +/* + * Called from qla_target.c:qla_tgt_do_ctio_completion() + */ +int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) +{ + struct se_cmd *se_cmd = &cmd->se_cmd; + unsigned long flags; + /* + * 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 is + * waiting upon completion in tcm_qla2xxx_write_pending_status().. + */ + spin_lock_irqsave(&se_cmd->t_state_lock, flags); + if (atomic_read(&se_cmd->t_transport_aborted)) { + spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); + complete(&se_cmd->t_transport_stop_comp); + return 0; + } + spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); + + se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD; + INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp); + queue_work(tcm_qla2xxx_free_wq, &cmd->work); + return 0; + } + /* + * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE + * status to the backstore processing thread. + */ + return transport_generic_handle_data(&cmd->se_cmd); +} + +/* + * Called from qla_target.c:qla_tgt_issue_task_mgmt() + */ +int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, uint8_t tmr_func) +{ + struct qla_tgt_sess *sess = mcmd->sess; + struct se_session *se_sess = sess->se_sess; + struct se_portal_group *se_tpg = se_sess->se_tpg; + struct se_cmd *se_cmd = &mcmd->se_cmd; + /* + * Initialize struct se_cmd descriptor from target_core_mod infrastructure + */ + transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess, 0, + DMA_NONE, 0, NULL); + /* + * Allocate the TCM TMR + */ + se_cmd->se_tmr_req = core_tmr_alloc_req(se_cmd, mcmd, tmr_func, GFP_ATOMIC); + if (!se_cmd->se_tmr_req) + return -ENOMEM; + /* + * Save the se_tmr_req for qla_tgt_xmit_tm_rsp() callback into LLD code + */ + mcmd->se_tmr_req = se_cmd->se_tmr_req; + /* + * Locate the underlying TCM struct se_lun from sc->device->lun + */ + if (transport_lookup_tmr_lun(se_cmd, lun) < 0) { + transport_generic_free_cmd(se_cmd, 1); + return -EINVAL; + } + /* + * Queue the TMR associated se_cmd into TCM Core for processing + */ + return transport_generic_handle_tmr(se_cmd); +} + +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 = tcm_qla2xxx_mapping_dir(se_cmd); + cmd->aborted = atomic_read(&se_cmd->t_transport_aborted); + + /* + * Setup the struct se_task->task_sg[] chained SG list + */ + transport_do_task_sg_chain(se_cmd); + cmd->sg_cnt = se_cmd->t_tasks_sg_chained_no; + cmd->sg = se_cmd->t_tasks_sg_chained; + cmd->offset = 0; + + /* + * Now queue completed DATA_IN the qla2xxx LLD and response ring + */ + return qla_tgt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, + se_cmd->scsi_status); +} + +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 = tcm_qla2xxx_mapping_dir(se_cmd); + cmd->aborted = atomic_read(&se_cmd->t_transport_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 + */ + 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 qla_tgt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); +} + +int 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. + */ + qla_tgt_xmit_tm_rsp(mcmd); + + return 0; +} + +u16 tcm_qla2xxx_get_fabric_sense_len(void) +{ + return 0; +} + +u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length) +{ + return 0; +} + +int tcm_qla2xxx_is_state_remove(struct se_cmd *se_cmd) +{ + return 0; +} + +/* 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; + +struct workqueue_struct *tcm_qla2xxx_free_wq; +struct workqueue_struct *tcm_qla2xxx_cmd_wq; + +static int tcm_qla2xxx_setup_nacl_from_rport( + struct se_portal_group *se_tpg, + struct se_node_acl *se_nacl, + struct tcm_qla2xxx_lport *lport, + struct tcm_qla2xxx_nacl *nacl, + u64 rport_wwnn) +{ + struct scsi_qla_host *vha = lport->qla_vha; + struct Scsi_Host *sh = vha->host; + struct fc_host_attrs *fc_host = shost_to_fc_host(sh); + struct fc_rport *rport; + struct tcm_qla2xxx_fc_domain *d; + struct tcm_qla2xxx_fc_area *a; + struct tcm_qla2xxx_fc_al_pa *p; + unsigned long flags; + unsigned char domain, area, al_pa; + /* + * Scan the existing rports, and create a session for the + * explict NodeACL is an matching rport->node_name already + * exists. + */ + spin_lock_irqsave(sh->host_lock, flags); + list_for_each_entry(rport, &fc_host->rports, peers) { + if (rport_wwnn != rport->node_name) + continue; + + pr_debug("Located existing rport_wwpn and rport->node_name:" + " 0x%016LX, port_id: 0x%04x\n", rport->node_name, + rport->port_id); + domain = (rport->port_id >> 16) & 0xff; + area = (rport->port_id >> 8) & 0xff; + al_pa = rport->port_id & 0xff; + nacl->nport_id = rport->port_id; + + pr_debug("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n", + domain, area, al_pa); + spin_unlock_irqrestore(sh->host_lock, flags); + + + spin_lock_irqsave(&vha->hw->hardware_lock, flags); + d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain]; + pr_debug("Using d: %p for domain: 0x%02x\n", d, domain); + a = &d->areas[area]; + pr_debug("Using a: %p for area: 0x%02x\n", a, area); + p = &a->al_pas[al_pa]; + pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa); + + p->se_nacl = se_nacl; + pr_debug("Setting p->se_nacl to se_nacl: %p for WWNN: 0x%016LX," + " port_id: 0x%04x\n", se_nacl, rport_wwnn, + nacl->nport_id); + spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); + + return 1; + } + spin_unlock_irqrestore(sh->host_lock, flags); + + return 0; +} + +/* + * Expected to be called with struct qla_hw_data->hardware_lock held + */ +int tcm_qla2xxx_clear_nacl_from_fcport_map( + struct se_node_acl *se_nacl) +{ + 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); + struct tcm_qla2xxx_fc_domain *d; + struct tcm_qla2xxx_fc_area *a; + struct tcm_qla2xxx_fc_al_pa *p; + unsigned char domain, area, al_pa; + + domain = (nacl->nport_id >> 16) & 0xff; + area = (nacl->nport_id >> 8) & 0xff; + al_pa = nacl->nport_id & 0xff; + + pr_debug("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n", + domain, area, al_pa); + + d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain]; + pr_debug("Using d: %p for domain: 0x%02x\n", d, domain); + a = &d->areas[area]; + pr_debug("Using a: %p for area: 0x%02x\n", a, area); + p = &a->al_pas[al_pa]; + pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa); + + p->se_nacl = NULL; + pr_debug("Clearing p->se_nacl to se_nacl: %p for WWNN: 0x%016LX," + " port_id: 0x%04x\n", se_nacl, nacl->nport_wwnn, + nacl->nport_id); + + return 0; +} + +static struct se_node_acl *tcm_qla2xxx_make_nodeacl( + struct se_portal_group *se_tpg, + struct config_group *group, + const char *name) +{ + 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 se_node_acl *se_nacl, *se_nacl_new; + struct tcm_qla2xxx_nacl *nacl; + u64 wwnn; + u32 qla2xxx_nexus_depth; + int rc; + + 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); + /* + * Setup a se_nacl handle based on an a matching struct fc_rport setup + * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port() + */ + rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport, + nacl, wwnn); + if (rc < 0) { + tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); + return ERR_PTR(rc); + } + + 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", QLA_TPG_ATTRIB(tpg)->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 = strict_strtoul(page, 0, &val); \ + if (ret < 0) { \ + pr_err("strict_strtoul() 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); + +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, + 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); + char *endptr; + u32 op; + + op = simple_strtoul(page, &endptr, 0); + if ((op != 1) && (op != 0)) { + pr_err("Illegal value for tpg_enable: %u\n", op); + return -EINVAL; + } + + if (op) { + atomic_set(&tpg->lport_tpg_enabled, 1); + qla_tgt_enable_vha(vha); + } else { + if (!ha->qla_tgt) { + pr_err("truct qla_hw_data *ha->qla_tgt is NULL\n"); + return -ENODEV; + } + atomic_set(&tpg->lport_tpg_enabled, 0); + qla_tgt_stop_phase1(ha->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 (strict_strtoul(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 + */ + QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1; + QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1; + QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 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->qla_tgt && !ha->qla_tgt->tgt_stop) + qla_tgt_stop_phase1(ha->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 (strict_strtoul(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; + struct tcm_qla2xxx_fc_domain *d; + struct tcm_qla2xxx_fc_area *a; + struct tcm_qla2xxx_fc_al_pa *p; + unsigned char domain, area, al_pa; + + lport = ha->target_lport_ptr; + if (!lport) { + pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); + dump_stack(); + return NULL; + } + + domain = s_id[0]; + area = s_id[1]; + al_pa = s_id[2]; + + pr_debug("find_sess_by_s_id: 0x%02x area: 0x%02x al_pa: %02x\n", + domain, area, al_pa); + + d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain]; + pr_debug("Using d: %p for domain: 0x%02x\n", d, domain); + a = &d->areas[area]; + pr_debug("Using a: %p for area: 0x%02x\n", a, area); + p = &a->al_pas[al_pa]; + pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa); + + se_nacl = p->se_nacl; + if (!se_nacl) { + pr_debug("Unable to locate s_id: 0x%02x area: 0x%02x" + " al_pa: %02x\n", domain, area, al_pa); + 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) +{ + struct se_node_acl *saved_nacl; + struct tcm_qla2xxx_fc_domain *d; + struct tcm_qla2xxx_fc_area *a; + struct tcm_qla2xxx_fc_al_pa *p; + unsigned char domain, area, al_pa; + + domain = s_id[0]; + area = s_id[1]; + al_pa = s_id[2]; + pr_debug("set_sess_by_s_id: domain 0x%02x area: 0x%02x al_pa: %02x\n", + domain, area, al_pa); + + d = &((struct tcm_qla2xxx_fc_domain *)lport->lport_fcport_map)[domain]; + pr_debug("Using d: %p for domain: 0x%02x\n", d, domain); + a = &d->areas[area]; + pr_debug("Using a: %p for area: 0x%02x\n", a, area); + p = &a->al_pas[al_pa]; + pr_debug("Using p: %p for al_pa: 0x%02x\n", p, al_pa); + + saved_nacl = p->se_nacl; + if (!saved_nacl) { + pr_debug("Setting up new p->se_nacl to new_se_nacl\n"); + p->se_nacl = new_se_nacl; + 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 p->se_nacl\n"); + p->se_nacl = NULL; + nacl->qla_tgt_sess = NULL; + return; + } + pr_debug("Replacing existing nacl->qla_tgt_sess and" + " p->se_nacl\n"); + p->se_nacl = 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 p->se_nacl\n"); + p->se_nacl = NULL; + return; + } + + pr_debug("Replacing existing p->se_nacl w/o active" + " nacl->qla_tgt_sess\n"); + p->se_nacl = 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->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 = &((struct tcm_qla2xxx_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); +} + +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; + unsigned char be_sid[3]; + + 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->target_lport_ptr; + if (!lport) { + pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); + dump_stack(); + return; + } + + target_splice_sess_cmd_list(se_sess); + spin_unlock_irq(&ha->hardware_lock); + + target_wait_for_sess_cmds(se_sess, 0); + + spin_lock_irq(&ha->hardware_lock); + + + /* + * Now clear the struct se_node_acl->nacl_sess pointer + */ + transport_deregister_session_configfs(sess->se_sess); + + /* + * And now clear the se_nacl and session pointers from our HW lport + * mappings for fabric S_ID and LOOP_ID. + */ + memset(&be_sid, 0, 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); + /* + * Release the FC nexus -> target se_session link now. + */ + transport_deregister_session(sess->se_sess); +} + +/* + * Called via qla_tgt_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->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; +} + +/* + * 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_session = tcm_qla2xxx_free_session, + .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, +}; + +static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) +{ + lport->lport_fcport_map = vmalloc( + sizeof(struct tcm_qla2xxx_fc_domain) * 256); + if (!lport->lport_fcport_map) { + pr_err("Unable to allocate lport_fcport_map of %lu" + " bytes\n", sizeof(struct tcm_qla2xxx_fc_domain) * 256); + return -ENOMEM; + } + memset(lport->lport_fcport_map, 0, + sizeof(struct tcm_qla2xxx_fc_domain) * 256); + pr_debug("qla2xxx: Allocated lport_fcport_map of %lu bytes\n", + sizeof(struct tcm_qla2xxx_fc_domain) * 256); + + 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 %lu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid) + * 65536); + vfree(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 %lu 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->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); + + ret = tcm_qla2xxx_init_lport(lport); + if (ret != 0) + goto out; + + ret = qla_tgt_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); + vfree(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; + /* + * Call into qla2x_target.c LLD logic to complete the + * shutdown of struct qla_tgt after the call to + * qla_tgt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. + */ + if (ha->qla_tgt && !ha->qla_tgt->tgt_stopped) + qla_tgt_stop_phase2(ha->qla_tgt); + + qla_tgt_lport_deregister(vha); + + vfree(lport->lport_loopid_map); + vfree(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); + +/* 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_true, + .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, + .new_cmd_map = NULL, + .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, + .stop_session = tcm_qla2xxx_stop_session, + .fall_back_to_erl0 = tcm_qla2xxx_reset_nexus, + .sess_logged_in = tcm_qla2xxx_sess_logged_in, + .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, + .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, + .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, + .is_state_remove = tcm_qla2xxx_is_state_remove, + /* + * 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_true, + .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, + .shutdown_session = tcm_qla2xxx_shutdown_session, + .close_session = tcm_qla2xxx_close_session, + .stop_session = tcm_qla2xxx_stop_session, + .fall_back_to_erl0 = tcm_qla2xxx_reset_nexus, + .sess_logged_in = tcm_qla2xxx_sess_logged_in, + .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, + .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, + .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, + .is_state_remove = tcm_qla2xxx_is_state_remove, + /* + * 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 the struct se_task->task_sg[] chaining bit + */ + fabric->tf_ops.task_sg_chaining = 1; + /* + * Setup default attribute lists for various fabric->tf_cit_tmpl + */ + TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; + TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; + TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = tcm_qla2xxx_tpg_attrib_attrs; + TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL; + TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; + TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; + TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; + TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; + TF_CIT_TMPL(fabric)->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 (!npiv_fabric) { + pr_err("target_fabric_configfs_init() failed\n"); + ret = -ENOMEM; + 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 + */ + TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; + TF_CIT_TMPL(npiv_fabric)->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); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h new file mode 100644 index 0000000..9dbac00 --- /dev/null +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h @@ -0,0 +1,148 @@ +#include + +#define TCM_QLA2XXX_VERSION "v0.1" +/* length of ASCII WWPNs including pad */ +#define TCM_QLA2XXX_NAMELEN 32 +/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */ +#define TCM_QLA2XXX_NPIV_NAMELEN 66 + +#include "qla_target.h" + +struct tcm_qla2xxx_nacl { + /* From libfc struct fc_rport->port_id */ + u16 nport_id; + /* Binary World Wide unique Node Name for remote FC Initiator Nport */ + u64 nport_wwnn; + /* ASCII formatted WWPN for FC Initiator Nport */ + char nport_name[TCM_QLA2XXX_NAMELEN]; + /* Pointer to qla_tgt_sess */ + struct qla_tgt_sess *qla_tgt_sess; + /* Pointer to TCM FC nexus */ + struct se_session *nport_nexus; + /* Returned by tcm_qla2xxx_make_nodeacl() */ + struct se_node_acl se_node_acl; +}; + +struct tcm_qla2xxx_tpg_attrib { + int generate_node_acls; + int cache_dynamic_acls; + int demo_mode_write_protect; + int prod_mode_write_protect; +}; + +struct tcm_qla2xxx_tpg { + /* FC lport target portal group tag for TCM */ + u16 lport_tpgt; + /* Atomic bit to determine TPG active status */ + atomic_t lport_tpg_enabled; + /* Pointer back to tcm_qla2xxx_lport */ + struct tcm_qla2xxx_lport *lport; + /* Used by tcm_qla2xxx_tpg_attrib_cit */ + struct tcm_qla2xxx_tpg_attrib tpg_attrib; + /* Returned by tcm_qla2xxx_make_tpg() */ + struct se_portal_group se_tpg; +}; + +#define QLA_TPG_ATTRIB(tpg) (&(tpg)->tpg_attrib) + +/* + * Used for the 24-bit lport->lport_fcport_map; + */ +struct tcm_qla2xxx_fc_al_pa { + struct se_node_acl *se_nacl; +}; + +struct tcm_qla2xxx_fc_area { + struct tcm_qla2xxx_fc_al_pa al_pas[256]; +}; + +struct tcm_qla2xxx_fc_domain { + struct tcm_qla2xxx_fc_area areas[256]; +}; + +struct tcm_qla2xxx_fc_loopid { + struct se_node_acl *se_nacl; +}; + +struct tcm_qla2xxx_lport { + /* SCSI protocol the lport is providing */ + u8 lport_proto_id; + /* Binary World Wide unique Port Name for FC Target Lport */ + u64 lport_wwpn; + /* Binary World Wide unique Port Name for FC NPIV Target Lport */ + u64 lport_npiv_wwpn; + /* Binary World Wide unique Node Name for FC NPIV Target Lport */ + u64 lport_npiv_wwnn; + /* ASCII formatted WWPN for FC Target Lport */ + char lport_name[TCM_QLA2XXX_NAMELEN]; + /* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */ + char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN]; + /* vmalloc'ed memory for fc_port pointers in 24-bit FC Port ID space */ + char *lport_fcport_map; + /* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */ + char *lport_loopid_map; + /* Pointer to struct scsi_qla_host from qla2xxx LLD */ + struct scsi_qla_host *qla_vha; + /* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */ + struct scsi_qla_host *qla_npiv_vp; + /* Pointer to struct qla_tgt pointer */ + struct qla_tgt lport_qla_tgt; + /* Pointer to struct fc_vport for NPIV vport from libfc */ + struct fc_vport *npiv_vport; + /* Pointer to TPG=1 for non NPIV mode */ + struct tcm_qla2xxx_tpg *tpg_1; + /* Returned by tcm_qla2xxx_make_lport() */ + struct se_wwn lport_wwn; +}; + +extern int tcm_qla2xxx_check_true(struct se_portal_group *); +extern int tcm_qla2xxx_check_false(struct se_portal_group *); +extern ssize_t tcm_qla2xxx_parse_wwn(const char *, u64 *, int); +extern ssize_t tcm_qla2xxx_format_wwn(char *, size_t, u64); +extern char *tcm_qla2xxx_get_fabric_name(void); +extern int tcm_qla2xxx_npiv_parse_wwn(const char *name, size_t, u64 *, u64 *); +extern ssize_t tcm_qla2xxx_npiv_format_wwn(char *, size_t, u64, u64); +extern char *tcm_qla2xxx_npiv_get_fabric_name(void); +extern u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *); +extern char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *); +extern char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *); +extern u16 tcm_qla2xxx_get_tag(struct se_portal_group *); +extern u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *); +extern u32 tcm_qla2xxx_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, + struct t10_pr_registration *, int *, unsigned char *); +extern u32 tcm_qla2xxx_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, + struct t10_pr_registration *, int *); +extern char *tcm_qla2xxx_parse_pr_out_transport_id(struct se_portal_group *, const char *, + u32 *, char **); +extern int tcm_qla2xxx_check_demo_mode(struct se_portal_group *); +extern int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *); +extern int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *); +extern int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *); +extern struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(struct se_portal_group *); +extern void tcm_qla2xxx_release_fabric_acl(struct se_portal_group *, struct se_node_acl *); +extern u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *); +extern void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *); +extern int tcm_qla2xxx_check_stop_free(struct se_cmd *); +extern void tcm_qla2xxx_release_cmd(struct se_cmd *); +extern int tcm_qla2xxx_shutdown_session(struct se_session *); +extern void tcm_qla2xxx_close_session(struct se_session *); +extern void tcm_qla2xxx_stop_session(struct se_session *, int, int); +extern void tcm_qla2xxx_reset_nexus(struct se_session *); +extern int tcm_qla2xxx_sess_logged_in(struct se_session *); +extern u32 tcm_qla2xxx_sess_get_index(struct se_session *); +extern int tcm_qla2xxx_write_pending(struct se_cmd *); +extern int tcm_qla2xxx_write_pending_status(struct se_cmd *); +extern void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *); +extern u32 tcm_qla2xxx_get_task_tag(struct se_cmd *); +extern int tcm_qla2xxx_get_cmd_state(struct se_cmd *); +extern int tcm_qla2xxx_handle_cmd(struct scsi_qla_host *, struct qla_tgt_cmd *, + unsigned char *, uint32_t, int, int, int); +extern int tcm_qla2xxx_new_cmd_map(struct se_cmd *); +extern int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *); +extern int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t); +extern int tcm_qla2xxx_queue_data_in(struct se_cmd *); +extern int tcm_qla2xxx_queue_status(struct se_cmd *); +extern int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *); +extern u16 tcm_qla2xxx_get_fabric_sense_len(void); +extern u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *, u32); +extern int tcm_qla2xxx_is_state_remove(struct se_cmd *); -- 1.7.2.3