lpfc_fcpcmd_to_iocb(9)

💅 lpfc_fcpcmd_to_iocb — Kernel API Manual energy 🎀

okay so bestie, welcome to the Kernel API Manual page for lpfc_fcpcmd_to_iocb(9) — this is the glow-up edition where we learn how to yeet an FCP command into an IOCB and make it big-endian on the way out. no cap, it's a short one, so let's go. 🦋

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✨ NAME ✨

lpfc_fcpcmd_to_iocb — copy the fcp_cmd data into the IOCB 🫶

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🌸 SYNOPSIS 🌸

void lpfc_fcpcmd_to_iocb (u8 *data , struct fcp_cmnd *fcp_cmnd );

literally that's the whole vibe check: it returns void, bestie. nothing comes back. it just does the thing. 💅

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🎀 ARGUMENTS 🎀

• data — a pointer to the immediate command data portion of the IOCB. yes, that's where the copy lands. this is the destination, the main character of this operation 👑
• fcp_cmnd — the FCP Command that is provided by the SCSI layer. this is your source, babes, the origin story 🍓

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🔥 DESCRIPTION 🔥

so here's the tea 🫖: this routine copies the entire FCP command from fcp_cmnd over to data, and while it's doing that it's also byte swapping the data into big endian format so it can actually be transmitted on the wire. like, it's giving two jobs in one function and honestly? iconic. ✨

no partial copies, no sneaky trimming — the whole FCP command goes, and it goes big-endian. periodt. 💜

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/lpfc/lpfc_scsi.c

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_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_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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and that's the whole page, bestie 🧚 this edition of lpfc_fcpcmd_to_iocb(9) lives in ./drivers/scsi/lpfc, dated October 2026 — so go forth, byte swap responsibly, and remember: big endian on the wire, big energy in your heart. mwah 💖🌸