// SPDX-License-Identifier: GPL-2.0-or-later /******************************************************************************* * 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 <[email protected]> * * 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 * ****************************************************************************/ #include <linux/module.h> #include <linux/utsname.h> #include <linux/vmalloc.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/string.h> #include <linux/configfs.h> #include <linux/ctype.h> #include <asm/unaligned.h> #include <scsi/scsi_host.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> #include "qla_def.h" #include "qla_target.h" #include "tcm_qla2xxx.h" static struct workqueue_struct *tcm_qla2xxx_free_wq; /* * 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) { … } static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) { … } /* * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn */ static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) { … } /* * 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) { … } static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) { … } static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) { … } static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) { … } static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) { … } /* * 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) { … } static void tcm_qla2xxx_complete_free(struct work_struct *work) { … } static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess) { … } static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd) { … } /* * 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) { … } /* * Called from struct target_core_fabric_ops->check_stop_free() context */ static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) { … } /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying * fabric descriptor @se_cmd command to release */ static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) { … } static void tcm_qla2xxx_release_session(struct kref *kref) { … } static void tcm_qla2xxx_put_sess(struct fc_port *sess) { … } static void tcm_qla2xxx_close_session(struct se_session *se_sess) { … } static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) { … } static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) { … } /* * 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) { … } static void tcm_qla2xxx_handle_data_work(struct work_struct *work) { … } /* * Called from qla_target.c:qlt_do_ctio_completion() */ static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) { … } static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) { … } static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, uint16_t *pfw_prot_opts) { … } /* * Called from qla_target.c:qlt_issue_task_mgmt() */ static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, uint16_t tmr_func, uint32_t tag) { … } static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, uint64_t tag) { … } static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) { … } static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) { … } static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) { … } static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) { … } static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, struct tcm_qla2xxx_nacl *, struct fc_port *); /* * Expected to be called with struct qla_hw_data->tgt.sess_lock held */ static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) { … } static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) { … } static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, const char *name) { … } /* Start items for tcm_qla2xxx_tpg_attrib_cit */ #define DEF_QLA_TPG_ATTRIB(name) … DEF_QLA_TPG_ATTRIB(…); DEF_QLA_TPG_ATTRIB(…); DEF_QLA_TPG_ATTRIB(…); DEF_QLA_TPG_ATTRIB(…); DEF_QLA_TPG_ATTRIB(…); #ifdef CONFIG_TCM_QLA2XXX_DEBUG DEF_QLA_TPG_ATTRIB(…); #endif static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = …; /* End items for tcm_qla2xxx_tpg_attrib_cit */ static int tcm_qla2xxx_enable_tpg(struct se_portal_group *se_tpg, bool enable) { … } static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, char *page) { … } static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, const char *page, size_t count) { … } static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, char *page) { … } CONFIGFS_ATTR_RO(…); CONFIGFS_ATTR(…); static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = …; static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, const char *name) { … } static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) { … } static int tcm_qla2xxx_npiv_enable_tpg(struct se_portal_group *se_tpg, bool enable) { … } static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, const char *name) { … } /* * Expected to be called with struct qla_hw_data->tgt.sess_lock held */ static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, const be_id_t s_id) { … } /* * Expected to be called with struct qla_hw_data->tgt.sess_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 fc_port *fc_port, be_id_t s_id) { … } /* * Expected to be called with struct qla_hw_data->tgt.sess_lock held */ static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( scsi_qla_host_t *vha, const uint16_t loop_id) { … } /* * Expected to be called with struct qla_hw_data->tgt.sess_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 fc_port *fc_port, uint16_t loop_id) { … } /* * Should always be called with qla_hw_data->tgt.sess_lock held. */ static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) { … } static void tcm_qla2xxx_free_session(struct fc_port *sess) { … } static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, struct se_session *se_sess, void *p) { … } /* * 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, struct fc_port *qlat_sess) { … } static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, uint16_t loop_id, bool conf_compl_supported) { … } /* * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. */ static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = …; static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) { … } static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, void *target_lport_ptr, u64 npiv_wwpn, u64 npiv_wwnn) { … } static struct se_wwn *tcm_qla2xxx_make_lport( struct target_fabric_configfs *tf, struct config_group *group, const char *name) { … } static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) { … } static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, void *target_lport_ptr, u64 npiv_wwpn, u64 npiv_wwnn) { … } static struct se_wwn *tcm_qla2xxx_npiv_make_lport( struct target_fabric_configfs *tf, struct config_group *group, const char *name) { … } static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) { … } static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, char *page) { … } CONFIGFS_ATTR_RO(…); static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = …; static const struct target_core_fabric_ops tcm_qla2xxx_ops = …; static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = …; static int tcm_qla2xxx_register_configfs(void) { … } static void tcm_qla2xxx_deregister_configfs(void) { … } static int __init tcm_qla2xxx_init(void) { … } static void __exit tcm_qla2xxx_exit(void) { … } MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; module_init(…) …; module_exit(tcm_qla2xxx_exit);
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