lpfc_new_io_buf(9)

💖 lpfc_new_io_buf(9) — Kernel API Manual, bestie 💖

okay so this is the lpfc_new_io_buf(9) page from the Kernel API Manual, and it’s literally about the IO buffer allocator for an HBA with the SLI4 IF spec. slay. 💅

🌸 NAME 🌸

lpfc_new_io_buf — IO buffer allocator for HBA with SLI4 IF spec. no cap, that’s the whole vibe. ✨

✨ SYNOPSIS ✨

int lpfc_new_io_buf (struct lpfc_hba *phba , int num_to_alloc );

🎀 ARGUMENTS 🎀

• phba — Pointer to lpfc hba data structure. 🫶
• num_to_alloc — The requested number of buffers to allocate. 💖

💅 DESCRIPTION 💅

This routine allocates nvme buffers for device with SLI-4 interface spec, and the nvme buffer contains all the necessary information needed to initiate an I/O. After allocating up to num_to_allocate IO buffers and putting them on a list, it posts them to the port by using SGL block post. iconic behavior, honestly. 🔥

Return codes: int - number of IO buffers that were allocated and posted. 0 = failure, less than num_to_alloc is a partial failure. so if you get fewer than requested, that’s a partial-failure situation — noted, bestie. 🫡

🦋 SEE ALSO 🦋

Kernel file ./drivers/scsi/lpfc/lpfc_init.c is the main character here, and the whole linked crew is:

• lpfc_config_port_prep(9), lpfc_config_async_cmpl(9), lpfc_dump_wakeup_param_cmpl(9), lpfc_update_vport_wwn(9), lpfc_config_port_post(9), lpfc_sli4_refresh_params(9), lpfc_hba_init_link(9), lpfc_hba_init_link_fc_topology(9), lpfc_hba_down_link(9), lpfc_hba_down_prep(9)
• lpfc_sli4_free_sp_events(9), lpfc_hba_free_post_buf(9), lpfc_hba_clean_txcmplq(9), lpfc_hba_down_post_s3(9), lpfc_hba_down_post_s4(9), lpfc_hba_down_post(9), lpfc_hb_timeout(9), lpfc_rrq_timeout(9), lpfc_hb_mbox_cmpl(9), lpfc_hb_mxp_handler(9)
• lpfc_issue_hb_mbox(9), lpfc_issue_hb_tmo(9), lpfc_hb_timeout_handler(9), lpfc_offline_eratt(9), lpfc_sli4_offline_eratt(9), lpfc_handle_deferred_eratt(9), lpfc_handle_eratt_s3(9), lpfc_sli4_port_sta_fn_reset(9), lpfc_handle_eratt_s4(9), lpfc_handle_eratt(9)
• lpfc_handle_latt(9), lpfc_parse_vpd(9), lpfc_get_atto_model_desc(9), lpfc_get_hba_model_desc(9), lpfc_sli3_post_buffer(9), lpfc_post_rcv_buf(9), lpfc_sha_init(9), lpfc_sha_iterate(9), lpfc_challenge_key(9), lpfc_hba_init(9)
• lpfc_cleanup(9), lpfc_stop_vport_timers(9), __lpfc_sli4_stop_fcf_redisc_wait_timer(9), lpfc_sli4_stop_fcf_redisc_wait_timer(9), lpfc_cmf_stop(9), lpfc_cmf_start(9), lpfc_stop_hba_timers(9), lpfc_block_mgmt_io(9), lpfc_sli4_node_rpi_restore(9), lpfc_create_expedite_pool(9)
• lpfc_destroy_expedite_pool(9), lpfc_create_multixri_pools(9), lpfc_destroy_multixri_pools(9), lpfc_online(9), lpfc_unblock_mgmt_io(9), lpfc_offline_prep(9), lpfc_offline(9), lpfc_scsi_free(9), lpfc_io_free(9), lpfc_sli4_els_sgl_update(9)
• lpfc_sli4_nvmet_sgl_update(9), lpfc_sli4_io_sgl_update(9), lpfc_vmid_res_alloc(9), lpfc_create_port(9), destroy_port(9), lpfc_get_instance(9), lpfc_scan_finished(9), lpfc_host_attrib_init(9), lpfc_stop_port_s3(9), lpfc_stop_port_s4(9)
• lpfc_stop_port(9), lpfc_fcf_redisc_wait_start_timer(9), lpfc_sli4_fcf_redisc_wait_tmo(9), lpfc_vmid_poll(9), lpfc_sli4_parse_latt_fault(9), lpfc_sli4_parse_latt_type(9), lpfc_sli_port_speed_get(9), lpfc_sli4_port_speed_parse(9), lpfc_sli4_async_link_evt(9), lpfc_async_link_speed_to_read_top(9)
• lpfc_cgn_update_stat(9), lpfc_cgn_update_tstamp(9), lpfc_cmf_stats_timer(9), lpfc_calc_cmf_latency(9), lpfc_cmf_timer(9), lpfc_sli4_async_fc_evt(9), lpfc_sli4_async_sli_evt(9), lpfc_sli4_perform_vport_cvl(9), lpfc_sli4_perform_all_vport_cvl(9), lpfc_sli4_async_fip_evt(9)
• lpfc_sli4_async_dcbx_evt(9), lpfc_sli4_async_grp5_evt(9), lpfc_sli4_async_cmstat_evt(9), lpfc_cgn_params_val(9), lpfc_cgn_params_parse(9), lpfc_sli4_cgn_params_read(9), lpfc_sli4_cgn_parm_chg_evt(9), lpfc_sli4_async_event_proc(9), lpfc_sli4_fcf_redisc_event_proc(9), lpfc_api_table_setup(9)
• lpfc_log_intr_mode(9), lpfc_enable_pci_dev(9), lpfc_disable_pci_dev(9), lpfc_reset_hba(9), lpfc_sli_sriov_nr_virtfn_get(9), lpfc_sli_probe_sriov_nr_virtfn(9), lpfc_setup_driver_resource_phase1(9), lpfc_sli_driver_resource_setup(9), lpfc_sli_driver_resource_unset(9), lpfc_sli4_driver_resource_setup(9)
• lpfc_sli4_driver_resource_unset(9), lpfc_init_api_table_setup(9), lpfc_setup_driver_resource_phase2(9), lpfc_unset_driver_resource_phase2(9), lpfc_free_iocb_list(9), lpfc_init_iocb_list(9), lpfc_free_sgl_list(9), lpfc_free_els_sgl_list(9), lpfc_free_nvmet_sgl_list(9), lpfc_init_active_sgl_array(9)
• lpfc_free_active_sgl(9), lpfc_init_sgl_list(9), lpfc_sli4_init_rpi_hdrs(9), lpfc_sli4_create_rpi_hdr(9), lpfc_sli4_remove_rpi_hdrs(9), lpfc_hba_alloc(9), lpfc_hba_free(9), lpfc_setup_fdmi_mask(9), lpfc_create_shost(9), lpfc_destroy_shost(9)
• lpfc_setup_bg(9), lpfc_post_init_setup(9), lpfc_sli_pci_mem_setup(9), lpfc_sli_pci_mem_unset(9), lpfc_sli4_post_status_check(9), lpfc_sli4_bar0_register_memmap(9), lpfc_sli4_bar1_register_memmap(9), lpfc_sli4_bar2_register_memmap(9), lpfc_create_bootstrap_mbox(9), lpfc_destroy_bootstrap_mbox(9)
• lpfc_map_topology(9), lpfc_sli4_read_config(9), lpfc_setup_endian_order(9), lpfc_sli4_queue_verify(9), lpfc_sli4_queue_create(9), lpfc_sli4_queue_destroy(9), lpfc_setup_cq_lookup(9), lpfc_sli4_queue_setup(9), lpfc_sli4_queue_unset(9), lpfc_sli4_cq_event_pool_create(9)
• lpfc_sli4_cq_event_pool_destroy(9), __lpfc_sli4_cq_event_alloc(9), lpfc_sli4_cq_event_alloc(9), __lpfc_sli4_cq_event_release(9), lpfc_sli4_cq_event_release(9), lpfc_sli4_cq_event_release_all(9), lpfc_pci_function_reset(9), lpfc_sli4_pci_mem_setup(9), lpfc_sli4_pci_mem_unset(9), lpfc_sli_enable_msix(9)
• lpfc_sli_enable_msi(9), lpfc_sli_enable_intr(9), lpfc_sli_disable_intr(9), lpfc_find_cpu_handle(9), lpfc_find_hyper(9), lpfc_cpu_map_array_init(9), lpfc_hba_eq_hdl_array_init(9), lpfc_cpu_affinity_check(9), lpfc_cpuhp_get_eq(9), lpfc_irq_set_aff(9)
• lpfc_irq_clear_aff(9), lpfc_irq_rebalance(9), lpfc_sli4_enable_msix(9), lpfc_sli4_enable_msi(9), lpfc_sli4_enable_intr(9), lpfc_sli4_disable_intr(9), lpfc_unset_hba(9), lpfc_sli4_xri_exchange_busy_wait(9), lpfc_sli4_hba_unset(9), __lpfc_reg_congestion_buf(9)
• lpfc_get_sli4_parameters(9), lpfc_pci_probe_one_s3(9), lpfc_pci_remove_one_s3(9), lpfc_pci_suspend_one_s3(9), lpfc_pci_resume_one_s3(9), lpfc_sli_prep_dev_for_recover(9), lpfc_sli_prep_dev_for_reset(9), lpfc_sli_prep_dev_for_perm_failure(9), lpfc_io_error_detected_s3(9), lpfc_io_slot_reset_s3(9)
• lpfc_io_resume_s3(9), lpfc_sli4_get_els_iocb_cnt(9), lpfc_sli4_get_iocb_cnt(9), lpfc_write_firmware(9), lpfc_sli4_request_firmware_update(9), lpfc_pci_probe_one_s4(9), lpfc_pci_remove_one_s4(9), lpfc_pci_suspend_one_s4(9), lpfc_pci_resume_one_s4(9), lpfc_sli4_prep_dev_for_recover(9)
• lpfc_sli4_prep_dev_for_reset(9), lpfc_sli4_prep_dev_for_perm_failure(9), lpfc_io_error_detected_s4(9), lpfc_io_slot_reset_s4(9), lpfc_io_resume_s4(9), lpfc_pci_probe_one(9), lpfc_pci_remove_one(9), lpfc_pci_suspend_one(9), lpfc_pci_resume_one(9), lpfc_io_error_detected(9)
• lpfc_io_slot_reset(9), lpfc_io_resume(9), lpfc_sli4_oas_verify(9), lpfc_sli4_ras_init(9), lpfc_init(9), lpfc_exit(9)

Signed with the source/version ./drivers/scsi/lpfc, dated October 2026, and stamped lpfc_new_io_buf(9). That’s the whole page, bestie — mwah 💋✨