_base_get_hi...s_msix_index(9)
π _base_get_hi...s_msix_index(9) β like, the whole page, bestie
okay so real talk: this is a page straight out of the Kernel API Manual, and the star of the show is _base_get_high_iops_msix_index. yes the header truncates it to _base_get_hi...s_msix_index(9) β that's just the page name doing its little abbreviation thing, don't come for her π
β¨ NAME β¨
_base_get_high_iops_msix_index β gets the msix index of high iops queues. that's it, that's the whole job, and she does it flawlessly π
π¦ SYNOPSIS π¦
u8 _base_get_high_iops_msix_index (struct MPT3SAS_ADAPTER *ioc , struct
scsi_cmnd *scmd );
note the return type: u8. tiny but mighty π«Ά
πΈ ARGUMENTS πΈ
iocβ the per adapter object. yes, per adapter. she belongs to one adapter and one adapter only πscmdβ ascsi_cmndobject. that's the scsi command hanging out, minding its business β¨
π RETURN π
she hands you back the msix index of high iops reply queues β lowkey the whole point. and more specifically, per the original: i.e. the high iops reply queue on which the IO request's reply should be posted by the HBA firmware. so the HBA firmware knows exactly where to drop that reply. no cap π₯
π SEE ALSO π
okay bestie sit down, because this list is long and honestly iconic for it. first up, the source file where all this lives:
- Kernel file
./drivers/scsi/mpt3sas/mpt3sas_base.cβ the mothership π§
and now the extended friend group. every single one, in order, no skips, we love a complete roster:
mpt3sas_base_check_cmd_timeout(9)_scsih_set_fwfault_debug(9)_base_readl_aero(9)_base_clone_reply_to_sys_mem(9)_base_clone_mpi_to_sys_mem(9)_base_clone_to_sys_mem(9)_base_get_chain(9)_base_get_chain_phys(9)_base_get_buffer_bar0(9)_base_get_buffer_phys_bar0(9)_base_get_chain_buffer_dma_to_chain_buffer(9)_clone_sg_entries(9)mpt3sas_remove_dead_ioc_func(9)_base_sync_drv_fw_timestamp(9)_base_fault_reset_work(9)mpt3sas_base_start_watchdog(9)mpt3sas_base_stop_watchdog(9)mpt3sas_base_fault_info(9)mpt3sas_base_coredump_info(9)mpt3sas_base_wait_for_coredump_completion(9)mpt3sas_halt_firmware(9)_base_sas_ioc_info(9)_base_display_event_data(9)_base_sas_log_info(9)_base_display_reply_info(9)mpt3sas_base_done(9)_base_async_event(9)_base_get_cb_idx(9)
still with me? good, because the interrupt-and-polling girlies are next and they're kind of the moment π
mpt3sas_base_pause_mq_polling(9)mpt3sas_base_resume_mq_polling(9)mpt3sas_base_mask_interrupts(9)mpt3sas_base_unmask_interrupts(9)_base_process_reply_queue(9)mpt3sas_blk_mq_poll(9)_base_interrupt(9)_base_irqpoll(9)_base_init_irqpolls(9)_base_is_controller_msix_enabled(9)mpt3sas_base_sync_reply_irqs(9)mpt3sas_base_release_callback_handler(9)mpt3sas_base_register_callback_handler(9)mpt3sas_base_initialize_callback_handler(9)
then the scatter-gather squad, who literally build things π οΈ
_base_build_zero_len_sge(9)_base_add_sg_single_32(9)_base_add_sg_single_64(9)_base_get_chain_buffer_tracker(9)_base_build_sg(9)_base_build_nvme_prp(9)base_make_prp_nvme(9)_base_check_pcie_native_sgl(9)_base_add_sg_single_ieee(9)_base_build_zero_len_sge_ieee(9)_base_build_sg_scmd(9)_base_build_sg_scmd_ieee(9)_base_build_sg_ieee(9)_base_config_dma_addressing(9)
msix setup crew, aka the direct coworkers of this page's function π«‘
_base_check_enable_msix(9)mpt3sas_base_free_irq(9)_base_request_irq(9)_base_assign_reply_queues(9)_base_check_and_enable_high_iops_queues(9)mpt3sas_base_disable_msix(9)_base_alloc_irq_vectors(9)_base_enable_msix(9)mpt3sas_base_unmap_resources(9)mpt3sas_base_check_for_fault_and_issue_reset(9)mpt3sas_base_map_resources(9)
the getters β they get. that's the vibe π
mpt3sas_base_get_msg_frame(9)mpt3sas_base_get_sense_buffer(9)mpt3sas_base_get_sense_buffer_dma(9)mpt3sas_base_get_pcie_sgl(9)mpt3sas_base_get_pcie_sgl_dma(9)mpt3sas_base_get_reply_virt_addr(9)_base_get_msix_index(9)β her sibling, hi bestie π₯°mpt3sas_base_get_smid(9)mpt3sas_base_get_smid_scsiio(9)mpt3sas_base_get_smid_hpr(9)mpt3sas_base_free_smid(9)
the putters and writers, doing the most with the least fanfare β¨
_base_mpi_ep_writeq(9)_base_writeq(9)_base_set_and_get_msix_index(9)_base_put_smid_mpi_ep_scsi_io(9)_base_put_smid_scsi_io(9)_base_put_smid_fast_path(9)_base_put_smid_hi_priority(9)mpt3sas_base_put_smid_nvme_encap(9)_base_put_smid_default(9)_base_put_smid_scsi_io_atomic(9)_base_put_smid_fast_path_atomic(9)_base_put_smid_hi_priority_atomic(9)_base_put_smid_default_atomic(9)
branding, firmware packages, capabilities β the lore dump section π£
_base_display_OEMs_branding(9)_base_display_fwpkg_version(9)_base_display_ioc_capabilities(9)mpt3sas_base_update_missing_delay(9)_base_update_ioc_page1_inlinewith_perf_mode(9)
diag triggers, all of them, every flavor π
_base_get_event_diag_triggers(9)_base_get_scsi_diag_triggers(9)_base_get_mpi_diag_triggers(9)_base_get_master_diag_triggers(9)_base_check_for_trigger_pages_support(9)_base_get_diag_triggers(9)_base_update_diag_trigger_pages(9)_base_assign_fw_reported_qd(9)
atto things, config pages, memory pools β the infrastructure icons ποΈ
mpt3sas_atto_validate_nvram(9)mpt3sas_atto_get_sas_addr(9)mpt3sas_atto_init(9)_base_static_config_pages(9)mpt3sas_free_enclosure_list(9)_base_release_memory_pools(9)mpt3sas_check_same_4gb_region(9)_base_reduce_hba_queue_depth(9)_base_allocate_pcie_sgl_pool(9)_base_allocate_chain_dma_pool(9)_base_allocate_sense_dma_pool(9)_base_allocate_reply_pool(9)_base_allocate_reply_free_dma_pool(9)_base_allocate_reply_post_free_array(9)base_alloc_rdpq_dma_pool(9)_base_allocate_memory_pools(9)
ioc state + doorbell crew, the ones who wait very patiently π
mpt3sas_base_get_iocstate(9)_base_wait_on_iocstate(9)_base_dump_reg_set(9)_base_wait_for_doorbell_int(9)_base_wait_for_doorbell_ack(9)_base_wait_for_doorbell_not_used(9)_base_send_ioc_reset(9)mpt3sas_wait_for_ioc(9)_base_handshake_req_reply_wait(9)mpt3sas_base_sas_iounit_control(9)mpt3sas_base_scsi_enclosure_processor(9)_base_get_port_facts(9)_base_wait_for_iocstate(9)_base_get_ioc_facts(9)_base_send_ioc_init(9)mpt3sas_port_enable_done(9)_base_send_port_enable(9)mpt3sas_port_enable(9)_base_determine_wait_on_discovery(9)_base_unmask_events(9)_base_event_notification(9)mpt3sas_base_validate_event_type(9)mpt3sas_base_unlock_and_get_host_diagnostic(9)mpt3sas_base_lock_host_diagnostic(9)_base_diag_reset(9)
and the final boss batch β ready, attach, detach, resets, all of it π₯
mpt3sas_base_make_ioc_ready(9)_base_make_ioc_operational(9)mpt3sas_base_free_resources(9)mpt3sas_base_attach(9)mpt3sas_base_detach(9)_base_pre_reset_handler(9)_base_clear_outstanding_mpt_commands(9)_base_clear_outstanding_commands(9)_base_reset_done_handler(9)mpt3sas_wait_for_commands_to_complete(9)_base_check_ioc_facts_changes(9)mpt3sas_base_hard_reset_handler(9)
periodt. that's the entire list, not one dropped, we ate π½οΈ
ngl bestie, that SEE ALSO section is a whole friend group chat and you just read every message. proud of you fr fr π«Ά
and that's the page!! sign-off time: this one lives under ./drivers/scsi/mpt3sas, stamped October 2026 β go forth and get those high iops msix indexes, you've got this ππ¦β¨
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms