_scsih_expander_add(9)

💫 _scsih_expander_add(9) 💫

okay so bestie, this is a page from the Kernel API Manual — yes we're in kernel land today, put your hair up, we're doing this 🎀

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✨ NAME ✨

_scsih_expander_add — the girl whose whole job is creating expander object 🦋

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🌸 SYNOPSIS 🌸

int _scsih_expander_add (struct MPT3SAS_ADAPTER *ioc , u16 handle );

like, that's the whole signature, no notes 💅

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🫶 ARGUMENTS 🫶

• ioc — the per adapter object. your main character struct, the one everything hangs off of 👑
• handle — the expander handle. this is u16 btw, so keep it in range bestie 😭

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💖 DESCRIPTION 💖

It creates the expander object 🧚 and here's the important bit — the new object gets stored in ioc->sas_expander_list. That's literally where it lives. That's its home. periodt ✨

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🌈 RETURN 🌈

• 0 — slay, success 💚
• anything else — error, we don't talk about it 💀

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⭐ SEE ALSO ⭐

Kernel file ./drivers/scsi/mpt3sas/mpt3sas_scsih.c, plus the whole friend group (and honestly bestie, this is a big friend group, I'm not skipping a single one, they all ate):

enum device_responsive_state(9), struct sense_info(9), struct fw_event_work(9), struct _scsi_io_transfer(9), _scsih_set_debug_level(9), _scsih_srch_boot_sas_address(9), _scsih_srch_boot_device_name(9), _scsih_srch_boot_encl_slot(9), mpt3sas_get_port_by_id(9), mpt3sas_get_vphy_by_phy(9), _scsih_is_boot_device(9), _scsih_get_sas_address(9), _scsih_determine_boot_device(9), mpt3sas_get_pdev_from_target(9), __mpt3sas_get_sdev_by_rphy(9), __mpt3sas_get_sdev_by_addr(9), mpt3sas_get_sdev_by_addr(9), mpt3sas_get_sdev_by_handle(9), _scsih_display_enclosure_chassis_info(9), _scsih_sas_device_remove(9), _scsih_device_remove_by_handle(9), mpt3sas_device_remove_by_sas_address(9), _scsih_sas_device_add(9), _scsih_sas_device_init_add(9), mpt3sas_get_pdev_by_wwid(9), mpt3sas_get_pdev_by_handle(9), _scsih_set_nvme_max_shutdown_latency(9), _scsih_pcie_device_remove(9), _scsih_pcie_device_remove_by_handle(9), _scsih_pcie_device_add(9), _scsih_raid_device_find_by_id(9), mpt3sas_raid_device_find_by_handle(9), _scsih_raid_device_find_by_wwid(9), _scsih_raid_device_add(9), _scsih_raid_device_remove(9), mpt3sas_scsih_expander_find_by_handle(9), mpt3sas_scsih_enclosure_find_by_handle(9), mpt3sas_scsih_expander_find_by_sas_address(9), _scsih_expander_node_add(9), _scsih_is_end_device(9), _scsih_is_nvme_pciescsi_device(9), _scsih_scsi_lookup_find_by_target(9), _scsih_scsi_lookup_find_by_lun(9), mpt3sas_scsih_scsi_lookup_get(9), scsih_change_queue_depth(9), mpt3sas_scsih_change_queue_depth(9), scsih_target_alloc(9), scsih_target_destroy(9), scsih_sdev_init(9), scsih_sdev_destroy(9), _scsih_display_sata_capabilities(9), scsih_is_raid(9), scsih_get_resync(9), scsih_get_state(9), _scsih_set_level(9), _scsih_get_volume_capabilities(9), _scsih_enable_tlr(9), scsih_sdev_configure(9), scsih_bios_param(9), _scsih_response_code(9), _scsih_tm_done(9), mpt3sas_scsih_set_tm_flag(9), mpt3sas_scsih_clear_tm_flag(9), scsih_tm_cmd_map_status(9), scsih_tm_post_processing(9), mpt3sas_scsih_issue_tm(9), _scsih_tm_display_info(9), scsih_abort(9), scsih_dev_reset(9), scsih_target_reset(9), scsih_host_reset(9), _scsih_fw_event_add(9), _scsih_fw_event_del_from_list(9), _scsih_fw_event_requeue(9), _scsih_error_recovery_delete_devices(9), mpt3sas_port_enable_complete(9), _scsih_fw_event_cleanup_queue(9), _scsih_internal_device_block(9), _scsih_internal_device_unblock(9), _scsih_ublock_io_all_device(9), _scsih_ublock_io_device_wait(9), _scsih_ublock_io_device(9), _scsih_block_io_all_device(9), _scsih_block_io_device(9), _scsih_block_io_to_children_attached_to_ex(9), _scsih_block_io_to_children_attached_directly(9), _scsih_block_io_to_pcie_children_attached_directly(9), _scsih_tm_tr_send(9), _scsih_tm_tr_complete(9), _scsih_sas_control_complete(9), _scsih_tm_tr_volume_send(9), _scsih_tm_volume_tr_complete(9), _scsih_issue_delayed_event_ack(9), _scsih_issue_delayed_sas_io_unit_ctrl(9), mpt3sas_check_for_pending_internal_cmds(9), _scsih_check_for_pending_tm(9), _scsih_check_topo_delete_events(9), _scsih_check_pcie_topo_remove_events(9), _scsih_set_volume_delete_flag(9), _scsih_set_volume_handle_for_tr(9), _scsih_check_ir_config_unhide_events(9), _scsih_check_volume_delete_events(9), _scsih_temp_threshold_events(9), _scsih_flush_running_cmds(9), _scsih_setup_eedp(9), _scsih_eedp_error_handling(9), scsih_qcmd(9), _scsih_normalize_sense(9), _scsih_scsi_ioc_info(9), _scsih_turn_on_pfa_led(9), _scsih_turn_off_pfa_led(9), _scsih_send_event_to_turn_on_pfa_led(9), _scsih_smart_predicted_fault(9), _scsih_io_done(9), _scsih_update_vphys_after_reset(9), _scsih_get_port_table_after_reset(9), _scsih_look_and_get_matched_port_entry(9), _scsih_del_phy_part_of_anther_port(9), _scsih_add_or_del_phys_from_existing_port(9), _scsih_del_dirty_vphy(9), _scsih_del_dirty_port_entries(9), _scsih_sas_port_refresh(9), _scsih_alloc_vphy(9), _scsih_sas_host_refresh(9), _scsih_sas_host_add(9), mpt3sas_expander_remove(9), _scsih_done(9), _scsi_send_scsi_io(9), _scsih_determine_disposition(9), _scsih_report_luns(9), _scsih_start_unit(9), _scsih_test_unit_ready(9), _scsih_ata_pass_thru_idd(9), _scsih_wait_for_device_to_become_ready(9), _scsih_wait_for_target_to_become_ready(9), _scsih_check_access_status(9), _scsih_check_device(9), _scsih_add_device(9), _scsih_remove_device(9), _scsih_sas_topology_change_event_debug(9), _scsih_sas_topology_change_event(9), _scsih_sas_device_status_change_event_debug(9), _scsih_sas_device_status_change_event(9), _scsih_check_pcie_access_status(9), _scsih_pcie_device_remove_from_sml(9), _scsih_pcie_check_device(9), _scsih_pcie_add_device(9), _scsih_pcie_topology_change_event_debug(9), _scsih_pcie_topology_change_event(9), _scsih_pcie_device_status_change_event_debug(9), _scsih_pcie_device_status_change_event(9), _scsih_sas_enclosure_dev_status_change_event_debug(9), _scsih_sas_enclosure_dev_status_change_event(9), _scsih_sas_broadcast_primitive_event(9), _scsih_sas_discovery_event(9), _scsih_sas_device_discovery_error_event(9), _scsih_pcie_enumeration_event(9), _scsih_ir_fastpath(9), _scsih_reprobe_lun(9), _scsih_sas_volume_add(9), _scsih_sas_volume_delete(9), _scsih_sas_pd_expose(9), _scsih_sas_pd_hide(9), _scsih_sas_pd_delete(9), _scsih_sas_pd_add(9), _scsih_sas_ir_config_change_event_debug(9), _scsih_sas_ir_config_change_event(9), _scsih_sas_ir_volume_event(9), _scsih_sas_ir_physical_disk_event(9), _scsih_sas_ir_operation_status_event_debug(9), _scsih_sas_ir_operation_status_event(9), _scsih_prep_device_scan(9), _scsih_update_device_qdepth(9), _scsih_mark_responding_sas_device(9), _scsih_create_enclosure_list_after_reset(9), _scsih_search_responding_sas_devices(9), _scsih_mark_responding_pcie_device(9), _scsih_search_responding_pcie_devices(9), _scsih_mark_responding_raid_device(9), _scsih_search_responding_raid_devices(9), _scsih_mark_responding_expander(9), _scsih_search_responding_expanders(9), _scsih_remove_unresponding_devices(9), _scsih_scan_for_devices_after_reset(9), mpt3sas_scsih_pre_reset_handler(9), mpt3sas_scsih_clear_outstanding_scsi_tm_commands(9), mpt3sas_scsih_reset_done_handler(9), _mpt3sas_fw_work(9), _firmware_event_work(9), mpt3sas_scsih_event_callback(9), _scsih_expander_node_remove(9), _scsih_nvme_shutdown(9), _scsih_ir_shutdown(9), _scsih_get_shost_and_ioc(9), scsih_remove(9), scsih_shutdown(9), _scsih_probe_boot_devices(9), _scsih_probe_raid(9), _scsih_probe_sas(9), get_next_pcie_device(9), pcie_device_make_active(9), _scsih_probe_pcie(9), _scsih_probe_devices(9), scsih_scan_start(9), _scsih_complete_devices_scanning(9), scsih_scan_finished(9), scsih_map_queues(9), _scsih_determine_hba_mpi_version(9), _scsih_probe(9), scsih_suspend(9), scsih_resume(9), scsih_pci_error_detected(9), scsih_pci_slot_reset(9), scsih_pci_resume(9), scsih_pci_mmio_enabled(9), scsih_init(9), scsih_exit(9), _mpt3sas_init(9), _mpt3sas_exit(9)

no cap, that's all of them, I checked twice 😤💅

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and that's the whole page bestie!! 🫶 this one came out of ./drivers/scsi/mpt3sas, dated October 2026, and it's literally called _scsih_expander_add(9) — mwah, bye, go read the source 💜✨