--- zzzz-none-000/linux-3.10.107/include/target/target_core_fabric.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/include/target/target_core_fabric.h 2021-02-04 17:41:59.000000000 +0000 @@ -2,21 +2,26 @@ #define TARGET_CORE_FABRIC_H struct target_core_fabric_ops { - struct configfs_subsystem *tf_subsys; + struct module *module; + const char *name; + size_t node_acl_size; + /* + * Limits number of scatterlist entries per SCF_SCSI_DATA_CDB payload. + * Setting this value tells target-core to enforce this limit, and + * report as INQUIRY EVPD=b0 MAXIMUM TRANSFER LENGTH. + * + * target-core will currently reset se_cmd->data_length to this + * maximum size, and set UNDERFLOW residual count if length exceeds + * this limit. + * + * XXX: Not all initiator hosts honor this block-limit EVPD + * XXX: Currently assumes single PAGE_SIZE per scatterlist entry + */ + u32 max_data_sg_nents; char *(*get_fabric_name)(void); - u8 (*get_fabric_proto_ident)(struct se_portal_group *); char *(*tpg_get_wwn)(struct se_portal_group *); u16 (*tpg_get_tag)(struct se_portal_group *); u32 (*tpg_get_default_depth)(struct se_portal_group *); - u32 (*tpg_get_pr_transport_id)(struct se_portal_group *, - struct se_node_acl *, - struct t10_pr_registration *, int *, - unsigned char *); - u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *, - struct se_node_acl *, - struct t10_pr_registration *, int *); - char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *, - const char *, u32 *, char **); int (*tpg_check_demo_mode)(struct se_portal_group *); int (*tpg_check_demo_mode_cache)(struct se_portal_group *); int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *); @@ -27,10 +32,14 @@ * inquiry response */ int (*tpg_check_demo_mode_login_only)(struct se_portal_group *); - struct se_node_acl *(*tpg_alloc_fabric_acl)( - struct se_portal_group *); - void (*tpg_release_fabric_acl)(struct se_portal_group *, - struct se_node_acl *); + /* + * Optionally used as a configfs tunable to determine when + * target-core should signal the PROTECT=1 feature bit for + * backends that don't support T10-PI, so that either fabric + * HW offload or target-core emulation performs the associated + * WRITE_STRIP and READ_INSERT operations. + */ + int (*tpg_check_prot_fabric_only)(struct se_portal_group *); u32 (*tpg_get_inst_index)(struct se_portal_group *); /* * Optional to release struct se_cmd and fabric dependent allocated @@ -41,7 +50,6 @@ */ int (*check_stop_free)(struct se_cmd *); void (*release_cmd)(struct se_cmd *); - void (*put_session)(struct se_session *); /* * Called with spin_lock_bh(struct se_portal_group->session_lock held. */ @@ -57,11 +65,11 @@ int (*write_pending)(struct se_cmd *); int (*write_pending_status)(struct se_cmd *); void (*set_default_node_attributes)(struct se_node_acl *); - u32 (*get_task_tag)(struct se_cmd *); int (*get_cmd_state)(struct se_cmd *); int (*queue_data_in)(struct se_cmd *); int (*queue_status)(struct se_cmd *); - int (*queue_tm_rsp)(struct se_cmd *); + void (*queue_tm_rsp)(struct se_cmd *); + void (*aborted_task)(struct se_cmd *); /* * fabric module calls for target_core_fabric_configfs.c */ @@ -78,35 +86,59 @@ struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *, struct config_group *, const char *); void (*fabric_drop_np)(struct se_tpg_np *); - struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *, - struct config_group *, const char *); - void (*fabric_drop_nodeacl)(struct se_node_acl *); + int (*fabric_init_nodeacl)(struct se_node_acl *, const char *); + void (*fabric_cleanup_nodeacl)(struct se_node_acl *); + + struct configfs_attribute **tfc_discovery_attrs; + struct configfs_attribute **tfc_wwn_attrs; + struct configfs_attribute **tfc_tpg_base_attrs; + struct configfs_attribute **tfc_tpg_np_base_attrs; + struct configfs_attribute **tfc_tpg_attrib_attrs; + struct configfs_attribute **tfc_tpg_auth_attrs; + struct configfs_attribute **tfc_tpg_param_attrs; + struct configfs_attribute **tfc_tpg_nacl_base_attrs; + struct configfs_attribute **tfc_tpg_nacl_attrib_attrs; + struct configfs_attribute **tfc_tpg_nacl_auth_attrs; + struct configfs_attribute **tfc_tpg_nacl_param_attrs; }; -struct se_session *transport_init_session(void); +int target_register_template(const struct target_core_fabric_ops *fo); +void target_unregister_template(const struct target_core_fabric_ops *fo); + +int target_depend_item(struct config_item *item); +void target_undepend_item(struct config_item *item); + +struct se_session *transport_init_session(enum target_prot_op); +int transport_alloc_session_tags(struct se_session *, unsigned int, + unsigned int); +struct se_session *transport_init_session_tags(unsigned int, unsigned int, + enum target_prot_op); void __transport_register_session(struct se_portal_group *, struct se_node_acl *, struct se_session *, void *); void transport_register_session(struct se_portal_group *, struct se_node_acl *, struct se_session *, void *); void target_get_session(struct se_session *); void target_put_session(struct se_session *); +ssize_t target_show_dynamic_sessions(struct se_portal_group *, char *); void transport_free_session(struct se_session *); void target_put_nacl(struct se_node_acl *); void transport_deregister_session_configfs(struct se_session *); void transport_deregister_session(struct se_session *); -void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *, +void transport_init_se_cmd(struct se_cmd *, + const struct target_core_fabric_ops *, struct se_session *, u32, int, int, unsigned char *); -sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32); +sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u64); sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *); int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *, - unsigned char *, unsigned char *, u32, u32, int, int, int, - struct scatterlist *, u32, struct scatterlist *, u32); + unsigned char *, unsigned char *, u64, u32, int, int, int, + struct scatterlist *, u32, struct scatterlist *, u32, + struct scatterlist *, u32); int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, - unsigned char *, u32, u32, int, int, int); + unsigned char *, u64, u32, int, int, int); int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess, - unsigned char *sense, u32 unpacked_lun, + unsigned char *sense, u64 unpacked_lun, void *fabric_tmr_ptr, unsigned char tm_type, gfp_t, unsigned int, int); int transport_handle_cdb_direct(struct se_cmd *); @@ -120,8 +152,8 @@ int transport_check_aborted_status(struct se_cmd *, int); int transport_send_check_condition_and_sense(struct se_cmd *, sense_reason_t, int); -int target_get_sess_cmd(struct se_session *, struct se_cmd *, bool); -int target_put_sess_cmd(struct se_session *, struct se_cmd *); +int target_get_sess_cmd(struct se_cmd *, bool); +int target_put_sess_cmd(struct se_cmd *); void target_sess_cmd_list_set_waiting(struct se_session *); void target_wait_for_sess_cmds(struct se_session *); @@ -131,48 +163,46 @@ void core_tmr_release_req(struct se_tmr_req *); int transport_generic_handle_tmr(struct se_cmd *); void transport_generic_request_failure(struct se_cmd *, sense_reason_t); -int transport_lookup_tmr_lun(struct se_cmd *, u32); +int transport_lookup_tmr_lun(struct se_cmd *, u64); +void core_allocate_nexus_loss_ua(struct se_node_acl *acl); +struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg, + unsigned char *); +bool target_tpg_has_node_acl(struct se_portal_group *tpg, + const char *); struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *, unsigned char *); -void core_tpg_clear_object_luns(struct se_portal_group *); -struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *, - struct se_node_acl *, const char *, u32); -int core_tpg_del_initiator_node_acl(struct se_portal_group *, - struct se_node_acl *, int); int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *, unsigned char *, u32, int); int core_tpg_set_initiator_node_tag(struct se_portal_group *, struct se_node_acl *, const char *); -int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *, - struct se_portal_group *, void *, int); +int core_tpg_register(struct se_wwn *, struct se_portal_group *, int); int core_tpg_deregister(struct se_portal_group *); -/* SAS helpers */ -u8 sas_get_fabric_proto_ident(struct se_portal_group *); -u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *, unsigned char *); -u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *); -char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *, - u32 *, char **); - -/* FC helpers */ -u8 fc_get_fabric_proto_ident(struct se_portal_group *); -u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *, unsigned char *); -u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *); -char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *, - u32 *, char **); - -/* iSCSI helpers */ -u8 iscsi_get_fabric_proto_ident(struct se_portal_group *); -u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *, unsigned char *); -u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *, - struct t10_pr_registration *, int *); -char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *, - u32 *, char **); +/* + * 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 inline enum dma_data_direction +target_reverse_dma_direction(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; + } +} #endif /* TARGET_CORE_FABRICH */