lpfc_reques...pgrade_store(9)

💅 lpfc_request_firmware_upgrade_store — the "pls upgrade ur firmware" sysfs hook

okay so real talk, this is a page out of the Kernel API Manual, and the star of the show is lpfc_request_firmware_upgrade_store. the header got a lil truncated (lpfc_reques...pgrade_store(9)) but bestie, we know what she is 💖

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✨ NAME ✨

lpfc_request_firmware_upgrade_store — the one where you ask for a Linux generic firmware upgrade. that's it, that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

ssize_t lpfc_request_firmware_upgrade_store (struct device *dev , struct
       device_attribute *attr , const char *buf , size_t count );

like, literally the whole function signature, character for character, no notes. 🔥

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🦋 ARGUMENTS 🦋

• dev — the class device that gets converted into a Scsi_host. she's giving "main character starts as a device and ends as a Scsi_host" energy 👑
• attr — the device attribute. not used. she's just there for moral support 🫶
• buf — the string holding the number of vfs to be enabled. yes bestie, the number lives in there as a string 🙈
• count — unused variable. iconic of her honestly 💀

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💜 RETURN 💜

okay so on success you get the length of the buf — but only if val is in range and the intended mode is supported. and if val is out of range, or the intended mode isn't supported? you get -EINVAL. no cap, that's the whole deal ✨

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🌈 SEE ALSO 🌈

first up, the kernel file this all lives in: ./drivers/scsi/lpfc/lpfc_attr.c 📁

and then, like, the entire extended friend group of (9) pages — everybody's here, and nobody gets left out 💅:

lpfc_jedec_to_ascii(9), lpfc_drvr_version_show(9), lpfc_enable_fip_show(9), lpfc_info_show(9), lpfc_serialnum_show(9), lpfc_temp_sensor_show(9), lpfc_modeldesc_show(9), lpfc_modelname_show(9), lpfc_programtype_show(9), lpfc_vportnum_show(9), lpfc_fwrev_show(9), lpfc_hdw_show(9), lpfc_option_rom_version_show(9), lpfc_link_state_show(9), lpfc_sli4_protocol_show(9), lpfc_oas_supported_show(9), lpfc_link_state_store(9), lpfc_num_discovered_ports_show(9), lpfc_issue_lip(9), lpfc_do_offline(9), lpfc_reset_pci_bus(9), lpfc_selective_reset(9), lpfc_issue_reset(9), lpfc_sli4_pdev_status_reg_wait(9), lpfc_sli4_pdev_reg_request(9), lpfc_nport_evt_cnt_show(9), lpfc_board_mode_show(9), lpfc_board_mode_store(9), lpfc_get_hba_info(9), lpfc_max_rpi_show(9), lpfc_used_rpi_show(9), lpfc_max_xri_show(9), lpfc_used_xri_show(9), lpfc_max_vpi_show(9), lpfc_used_vpi_show(9), lpfc_npiv_info_show(9), lpfc_poll_show(9), lpfc_poll_store(9), lpfc_sriov_hw_max_virtfn_show(9), lpfc_enable_bbcr_set(9), lpfc_wwn_set(9), lpfc_oas_tgt_show(9), lpfc_oas_tgt_store(9), lpfc_oas_priority_show(9), lpfc_oas_priority_store(9), lpfc_oas_vpt_show(9), lpfc_oas_vpt_store(9), lpfc_oas_lun_state_show(9), lpfc_oas_lun_state_store(9), lpfc_oas_lun_status_show(9), lpfc_oas_lun_state_set(9), lpfc_oas_lun_get_next(9), lpfc_oas_lun_state_change(9), lpfc_oas_lun_show(9), lpfc_oas_lun_store(9), lpfc_nodev_tmo_show(9), lpfc_nodev_tmo_init(9), lpfc_update_rport_devloss_tmo(9), lpfc_nodev_tmo_set(9), lpfc_devloss_tmo_set(9), lpfc_tgt_queue_depth_set(9), lpfc_restrict_login_init(9), lpfc_restrict_login_set(9), lpfc_topology_store(9), lpfc_static_vport_show(9), lpfc_link_speed_store(9), lpfc_link_speed_init(9), lpfc_aer_support_store(9), lpfc_aer_cleanup_state(9), lpfc_sriov_nr_virtfn_store(9), lpfc_request_firmware_upgrade_init(9), lpfc_force_rscn_store(9), lpfc_force_rscn_init(9), lpfc_fcp_imax_store(9), lpfc_fcp_imax_init(9), lpfc_cq_max_proc_limit_store(9), lpfc_cq_max_proc_limit_init(9), lpfc_fcp_cpu_map_show(9), lpfc_fcp_cpu_map_store(9), lpfc_fcp_cpu_map_init(9), lpfc_cpumask_irq_mode_init(9), lpfc_irq_chann_show(9), lpfc_sg_seg_cnt_show(9), lpfc_sg_seg_cnt_init(9), sysfs_ctlreg_write(9), sysfs_ctlreg_read(9), sysfs_mbox_write(9), sysfs_mbox_read(9), lpfc_alloc_sysfs_attr(9), lpfc_free_sysfs_attr(9), lpfc_get_host_symbolic_name(9), lpfc_get_host_port_id(9), lpfc_get_host_port_type(9), lpfc_get_host_port_state(9), lpfc_get_host_speed(9), lpfc_get_host_fabric_name(9), lpfc_get_stats(9), lpfc_reset_stats(9), lpfc_get_enc_info(9), lpfc_get_node_by_target(9), lpfc_get_starget_port_id(9), lpfc_get_starget_node_name(9), lpfc_get_starget_port_name(9), lpfc_set_rport_loss_tmo(9), lpfc_set_vport_symbolic_name(9), lpfc_hba_log_verbose_init(9), lpfc_get_hba_function_mode(9), lpfc_get_cfgparam(9), lpfc_nvme_mod_param_dep(9), lpfc_get_vport_cfgparam(9)

like, the whole roster. iykyk 💖

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ngl bestie, this is a sysfs _store handler — that means somebody's writing to it from userspace. keep ur buf in range or she's throwing -EINVAL at you and honestly? fair. 😭

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that's the page!! mwah 💋 this lil beauty lives in ./drivers/scsi/lpfc and the version tag on it is dated October 2026 — so yeah, she's from the future, no cap 🌟🫶✨