lpfc_get_scsi_buf_s4(9)

💅 lpfc_get_scsi_buf_s4 — like, the Kernel API Manual page, bestie 🎀

okay so real talk, we're in the Kernel API Manual and today's main character is lpfc_get_scsi_buf_s4. buckle up 🦋

✨ NAME ✨

lpfc_get_scsi_buf_s4 — grab a scsi buffer from the HBA's io_buf_list, no cap 💖

🌸 SYNOPSIS 🌸

struct lpfc_io_buf * lpfc_get_scsi_buf_s4 (struct lpfc_hba *phba ,
struct lpfc_nodelist *ndlp , struct scsi_cmnd *cmnd );

🫶 ARGUMENTS 🫶

• phba — the HBA that this call is being run for. like, the whole reason we're here 💅
• ndlp — pointer to a node-list data structure 🧚
• cmnd — pointer to a scsi_cmnd data structure ⭐

👑 DESCRIPTION 👑

so this routine literally takes a scsi buffer off the head of the hdwq io_buf_list and hands it right back to whoever called. slay ✨

Return codes, bestie, pay attention:

• NULL — Error 😭
• Pointer to lpfc_scsi_buf — Success 🔥

ngl the error case is giving "it's not you, it's the buffer allocation" 💀

🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/lpfc/lpfc_scsi.c — that's the vibe check source, iykyk 👑

and the whole friend group, fr fr:

• lpfc_sli4_set_rsp_sgl_last(9)
• lpfc_rampdown_queue_depth(9)
• lpfc_ramp_down_queue_handler(9)
• lpfc_scsi_dev_block(9)
• lpfc_new_scsi_buf_s3(9)
• lpfc_sli4_vport_delete_fcp_xri_aborted(9)
• lpfc_sli4_io_xri_aborted(9)
• lpfc_get_scsi_buf_s3(9)
• lpfc_get_scsi_buf(9)
• lpfc_release_scsi_buf_s3(9)
• lpfc_release_scsi_buf_s4(9)
• lpfc_release_scsi_buf(9)
• lpfc_fcpcmd_to_iocb(9)
• lpfc_scsi_prep_dma_buf_s3(9)
• lpfc_bg_err_inject(9)
• lpfc_sc_to_bg_opcodes(9)
• lpfc_bg_err_opcodes(9)
• lpfc_bg_setup_bpl(9)
• lpfc_bg_setup_bpl_prot(9)
• lpfc_bg_setup_sgl(9)
• lpfc_bg_setup_sgl_prot(9)
• lpfc_prot_group_type(9)
• lpfc_bg_scsi_adjust_dl(9)
• lpfc_bg_scsi_prep_dma_buf_s3(9)
• lpfc_scsi_prep_dma_buf_s4(9)
• lpfc_bg_scsi_prep_dma_buf_s4(9)
• lpfc_scsi_prep_dma_buf(9)
• lpfc_bg_scsi_prep_dma_buf(9)
• lpfc_scsi_prep_cmnd_buf(9)
• lpfc_send_scsi_error_event(9)
• lpfc_scsi_unprep_dma_buf(9)
• lpfc_unblock_requests(9)
• lpfc_block_requests(9)
• lpfc_update_cmf_cmpl(9)
• lpfc_update_cmf_cmd(9)
• lpfc_handle_fcp_err(9)
• lpfc_fcp_io_cmd_wqe_cmpl(9)
• lpfc_scsi_cmd_iocb_cmpl(9)
• lpfc_scsi_prep_cmnd_buf_s3(9)
• lpfc_scsi_prep_cmnd_buf_s4(9)
• lpfc_scsi_prep_cmnd(9)
• lpfc_scsi_prep_task_mgmt_cmd_s3(9)
• lpfc_scsi_prep_task_mgmt_cmd_s4(9)
• lpfc_scsi_api_table_setup(9)
• lpfc_tskmgmt_def_cmpl(9)
• lpfc_check_pci_resettable(9)
• lpfc_info(9)
• lpfc_poll_rearm_timer(9)
• lpfc_poll_start_timer(9)
• lpfc_poll_timeout(9)
• lpfc_queuecommand(9)
• lpfc_abort_handler(9)
• lpfc_check_fcp_rsp(9)
• lpfc_send_taskmgmt(9)
• lpfc_chk_tgt_mapped(9)
• lpfc_reset_flush_io_context(9)
• lpfc_device_reset_handler(9)
• lpfc_target_reset_handler(9)
• lpfc_host_reset_handler(9)
• lpfc_sdev_init(9)
• lpfc_sdev_configure(9)
• lpfc_sdev_destroy(9)
• lpfc_create_device_data(9)
• lpfc_delete_device_data(9)
• __lpfc_get_device_data(9)
• lpfc_find_next_oas_lun(9)
• lpfc_enable_oas_lun(9)
• lpfc_disable_oas_lun(9)

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okay that's the whole thing, periodt 💜 this little cutie lives in ./drivers/scsi/lpfc, it's the October 2026 edition, and yes it's filed under lpfc_get_scsi_buf_s4(9) — go off, icon 🌟💅