mpi3mr_bsg_query_hdb(9)

✨ mpi3mr_bsg_query_hdb — the Kernel API Manual moment 💅

okay so bestie, this is a page from the Kernel API Manual for mpi3mr_bsg_query_hdb(9) — yes the whole title is literally that, and yes we're gonna get into it 🎀

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🌸 NAME 🌸

mpi3mr_bsg_query_hdb — the handler for the query HDB command. that's it, that's the vibe ✨

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🦋 SYNOPSIS 🦋

long mpi3mr_bsg_query_hdb (struct mpi3mr_ioc *mrioc , struct bsg_job
*job );

like, look at her. the signature. the drama. long return, two args, no notes 💖

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🎀 ARGUMENTS 🎀

• mrioc — the adapter instance reference 🫶 like, which adapter are we even talking about, this is her
• job — the BSG job pointer ✨ the actual job being handed over

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👑 DESCRIPTION 👑

so basically what she does is prepares and copies the host diagnostic buffer entries to the user buffer 💅 that's the whole assignment, and she ate, no cap. host diagnostic buffer entries → user buffer. iconic behavior fr fr.

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⭐ RETURN ⭐

0 on success, and proper error codes on failure 😭 — so like, check the return value bestie, don't just assume it slayed 🙈

ngl if you ignore the return value that's on you, the manpage literally told you 🫶

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🌈 SEE ALSO 🌈

the kernel file this lives in, first of all:

• Kernel file ./drivers/scsi/mpi3mr/mpi3mr_app.c 📁

and then a whole friend group of functions, all (9), all here, all accounted for — not skipping a single one 💀:

• mpi3mr_alloc_trace_buffer(9)
• mpi3mr_alloc_diag_bufs(9)
• mpi3mr_issue_diag_buf_post(9)
• mpi3mr_post_diag_bufs(9)
• mpi3mr_issue_diag_buf_release(9)
• mpi3mr_process_trigger(9)
• mpi3mr_global_trigger(9)
• mpi3mr_scsisense_trigger(9)
• mpi3mr_event_trigger(9)
• mpi3mr_reply_trigger(9)
• mpi3mr_get_num_trigger(9)
• mpi3mr_refresh_trigger(9)
• mpi3mr_release_diag_bufs(9)
• mpi3mr_set_trigger_data_in_hdb(9)
• mpi3mr_set_trigger_data_in_all_hdb(9)
• mpi3mr_hdbstatuschg_evt_th(9)
• mpi3mr_diag_buffer_for_type(9)
• mpi3mr_bsg_pel_abort(9)
• mpi3mr_bsg_verify_adapter(9)
• mpi3mr_bsg_refresh_hdb_triggers(9)
• mpi3mr_bsg_upload_hdb(9)
• mpi3mr_bsg_repost_hdb(9)
• mpi3mr_enable_logdata(9)
• mpi3mr_get_logdata(9)
• mpi3mr_bsg_pel_enable(9)
• mpi3mr_get_all_tgt_info(9)
• mpi3mr_get_change_count(9)
• mpi3mr_bsg_adp_reset(9)
• mpi3mr_bsg_populate_adpinfo(9)
• mpi3mr_bsg_process_drv_cmds(9)
• mpi3mr_total_num_ioctl_sges(9)
• mpi3mr_bsg_build_sgl(9)
• mpi3mr_get_nvme_data_fmt(9)
• mpi3mr_build_nvme_sgl(9)
• mpi3mr_build_nvme_prp(9)
• mpi3mr_map_data_buffer_dma(9)
• mpi3mr_bsg_process_mpt_cmds(9)
• mpi3mr_app_save_logdata_th(9)
• mpi3mr_bsg_request(9)
• mpi3mr_bsg_exit(9)
• mpi3mr_bsg_node_release(9)
• mpi3mr_bsg_init(9)
• version_fw_show(9)
• fw_queue_depth_show(9)
• op_req_q_count_show(9)
• reply_queue_count_show(9)
• reply_qfull_count_show(9)
• logging_level_show(9)
• logging_level_store(9)
• adp_state_show(9)
• fwfault_count_show(9)
• sas_address_show(9)
• device_handle_show(9)
• persistent_id_show(9)
• sas_ncq_prio_supported_show(9)
• sas_ncq_prio_enable_show(9)

like... the way she knows everybody in the driver 😭 main character energy for real 🔥

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so yeah, that's the whole page 💜 shoutout to ./drivers/scsi/mpi3mr for being the source, and October 2026 for the date — this one's stamped and sealed, mwah 🎀✨