mptbase_reply(9)

💅 mptbase_reply — the MPT base driver's callback routine

okay so real talk, this page is mptbase_reply(9) from the Kernel API Manual, and it's honestly kind of a big deal in a quiet, behind-the-scenes way — like the stage manager of a school play who nobody claps for but nothing works without. let's get into it 🎀

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✨ NAME ✨

mptbase_reply — the MPT base driver's callback routine 🫶

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🔥 SYNOPSIS 🔥

int mptbase_reply (MPT_ADAPTER *ioc , MPT_FRAME_HDR *req , MPT_FRAME_HDR *reply );

that's the whole signature bestie, three pointers and an int return, no cap 💅

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🦋 ARGUMENTS 🦋

• ioc — a pointer to the MPT_ADAPTER structure. like, the whole adapter vibe check in one pointer 👑
• req — a pointer to the original MPT request frame. the one that started it all, main character energy fr
• reply — a pointer to the MPT reply frame. and it's NULL if it's a TurboReply — so heads up, this one can absolutely be NULL and that's not a bug, that's just how TurboReply rolls 🙈

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🌸 DESCRIPTION 🌸

so this is the MPT base driver's callback routine, periodt. literally all the base driver's "internal" request/reply processing gets routed here — every single bit of it, no exceptions, it all comes through this door 🚪✨

right now (iykyk) it's used for EventNotification and EventAck handling. that's the current gig, that's what it's booked for 🎀

Returns:

• 1 — meaning yes bestie, the original alloc'd request frame ptr should be freed 🗑️✨
• 0 — meaning nope, leave it alone, don't touch it 🙅‍♀️

like the return value is genuinely just "should I free this or not", which is honestly such a clean design choice, we love to see it 💜

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🌈 SEE ALSO 🌈

buckle up babes, this list is long — but every single one of these is iconic and they all live in the kernel file ./drivers/message/fusion/mptbase.c:

mpt_get_cb_idx(9), mpt_is_discovery_complete(9), mpt_remove_dead_ioc_func(9), mpt_fault_reset_work(9), mpt_interrupt(9), mpt_register(9), mpt_deregister(9), mpt_event_register(9), mpt_event_deregister(9), mpt_reset_register(9), mpt_reset_deregister(9), mpt_device_driver_register(9), mpt_device_driver_deregister(9), mpt_get_msg_frame(9), mpt_put_msg_frame(9), mpt_put_msg_frame_hi_pri(9), mpt_free_msg_frame(9), mpt_add_sge(9), mpt_add_sge_64bit(9), mpt_add_sge_64bit_1078(9), mpt_add_chain(9), mpt_add_chain_64bit(9), mpt_send_handshake_request(9), mpt_host_page_access_control(9), mpt_host_page_alloc(9), mpt_verify_adapter(9), mpt_get_product_name(9), mpt_mapresources(9), mpt_attach(9), mpt_detach(9), mpt_suspend(9), mpt_resume(9), mpt_do_ioc_recovery(9), mpt_detect_bound_ports(9), mpt_adapter_disable(9), mpt_adapter_dispose(9), MptDisplayIocCapabilities(9), MakeIocReady(9), mpt_GetIocState(9), GetIocFacts(9), GetPortFacts(9), SendIocInit(9), SendPortEnable(9), mpt_alloc_fw_memory(9), mpt_free_fw_memory(9), mpt_do_upload(9), mpt_downloadboot(9), KickStart(9), mpt_diag_reset(9), SendIocReset(9), initChainBuffers(9), PrimeIocFifos(9), mpt_handshake_req_reply_wait(9), WaitForDoorbellAck(9), WaitForDoorbellInt(9), WaitForDoorbellReply(9), GetLanConfigPages(9), mptbase_sas_persist_operation(9), GetIoUnitPage2(9), mpt_GetScsiPortSettings(9), mpt_readScsiDevicePageHeaders(9), mpt_inactive_raid_list_free(9), mpt_inactive_raid_volumes(9), mpt_raid_phys_disk_pg0(9), mpt_raid_phys_disk_get_num_paths(9), mpt_raid_phys_disk_pg1(9), mpt_findImVolumes(9), SendEventNotification(9), SendEventAck(9), mpt_config(9), mpt_ioc_reset(9), procmpt_create(9), procmpt_destroy(9), mpt_print_ioc_summary(9), mpt_set_taskmgmt_in_progress_flag(9), mpt_clear_taskmgmt_in_progress_flag(9), mpt_halt_firmware(9), mpt_SoftResetHandler(9), mpt_Soft_Hard_ResetHandler(9), mpt_HardResetHandler(9), ProcessEventNotification(9), mpt_fc_log_info(9), mpt_spi_log_info(9), mpt_sas_log_info(9), mpt_iocstatus_info_config(9), mpt_iocstatus_info(9), fusion_init(9), fusion_exit(9)

lowkey a whole friend group of functions and they all say hi 💖

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and that's the page!! sources say this one comes from ./drivers/message/fusion and it's dated October 2026, and the page itself is mptbase_reply(9) — stan a callback routine that knows exactly what it's about. mwah 💋✨