lpfc_scsi_prep_dma_buf(9)

🦋 NAME 🦋

lpfc_scsi_prep_dma_buf — bestie, it's literally the wrapper function for DMA mapping of a scsi buffer 💖

(also hi, you're reading the Kernel API Manual — welcome to the group chat ✨)

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✨ SYNOPSIS ✨

int lpfc_scsi_prep_dma_buf (struct lpfc_hba *phba , struct lpfc_io_buf
*lpfc_cmd );

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🎀 ARGUMENTS 🎀

• phba — the Hba that this call is being executed for. the main character of this whole operation, no cap 👑
• lpfc_cmd — the scsi buffer that's about to get mapped. she's getting prepped, she's getting glammed up for the DMA 💅

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🌸 DESCRIPTION 🌸

okay so this routine wraps the actual DMA mapping function pointer from the lpfc_hba struct. that's it, that's the whole job — it's giving middle-management-for-function-pointers energy and honestly? iconic. it just forwards the vibes along 🫶

Return codes: 1 - Error 😭 · 0 - Success 🎉

not me reminding you that 0 is success here and 1 is the bad ending — read your return values, bestie, fr fr 💀

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🔥 SEE ALSO 🔥

the kernel file that has all the lore: ./drivers/scsi/lpfc/lpfc_scsi.c 📁

and now, the extended universe… every single one of these, no skips, iykyk:

• 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_s4(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_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)

like… go read them. all of them. i'll wait, bestie 🌈

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and that's the page!! 💖 brought to you by ./drivers/scsi/lpfc, dated October 2026, and yes it's still called lpfc_scsi_prep_dma_buf(9) — slay, periodt ✨🎀🦋