mpi3mr_get_s...cal_linkrate(9)

💅 mpi3mr_get_sas_negotiated_logical_linkrate(9) 💅

okay so this is a page straight out of the Kernel API Manual and bestie, it's a little one but she's important. it's mpi3mr_get_sas_negotiated_logical_linkrate(9) — say that five times fast, i dare you 😭

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✨ NAME ✨

mpi3mr_get_sas_negotiated_logical_linkrate — get linkrate. that's it. that's the whole vibe. she gets the linkrate 🎀

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🌸 SYNOPSIS 🌸

u8 mpi3mr_get_sas_negotiated_logical_linkrate (struct mpi3mr_ioc *mrioc
, struct mpi3mr_tgt_dev *tgtdev );

like, two args, one u8 coming back at you. slay ✨

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🦋 ARGUMENTS 🦋

• mrioc — the Adapter instance reference. your whole controller, your main character 👑
• tgtdev — the Target device. the one we're asking about 🎯

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💖 DESCRIPTION 💖

okay so here's the tea, and i need you to follow along because the way this function works is genuinely so smart 🫶

first, it tries to use the link rate from DevicePage0 — and btw that page is populated by firmware during device discovery, so it's the pre-cached, already-sitting-there version. convenient, right? ✨

but if the cached value is not available, or it's invalid (rude 💀), it falls back to reading from sas phy page0 or expander phy page1. so there's a whole backup plan. she does not give up. she pivots. periodt 💅

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🔥 RETURN 🔥

the logical link rate. that's the u8. go off 👑

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/mpi3mr/mpi3mr_transport.c — the literal source, iykyk

and then the whole friend group, fr fr:

• mpi3mr_post_transport_req(9)
• mpi3mr_report_manufacture(9)
• __mpi3mr_expander_find_by_handle(9)
• mpi3mr_is_expander_device(9)
• mpi3mr_get_sas_address(9)
• __mpi3mr_get_tgtdev_by_addr(9)
• mpi3mr_get_tgtdev_by_addr(9)
• mpi3mr_remove_device_by_sas_address(9)
• __mpi3mr_get_tgtdev_by_addr_and_rphy(9)
• mpi3mr_expander_find_by_sas_address(9)
• __mpi3mr_sas_node_find_by_sas_address(9)
• mpi3mr_parent_present(9)
• mpi3mr_convert_phy_link_rate(9)
• mpi3mr_delete_sas_phy(9)
• mpi3mr_add_sas_phy(9)
• mpi3mr_add_phy_to_an_existing_port(9)
• mpi3mr_delete_sas_port(9)
• mpi3mr_del_phy_from_an_existing_port(9)
• mpi3mr_sas_port_sanity_check(9)
• mpi3mr_set_identify(9)
• mpi3mr_add_host_phy(9)
• mpi3mr_add_expander_phy(9)
• mpi3mr_alloc_hba_port(9)
• mpi3mr_get_hba_port_by_id(9)
• mpi3mr_update_links(9)
• mpi3mr_sas_host_refresh(9)
• mpi3mr_sas_host_add(9)
• mpi3mr_sas_port_add(9)
• mpi3mr_sas_port_remove(9)
• struct host_port(9)
• mpi3mr_update_mr_sas_port(9)
• mpi3mr_refresh_sas_ports(9)
• mpi3mr_refresh_expanders(9)
• mpi3mr_expander_node_add(9)
• mpi3mr_expander_add(9)
• mpi3mr_expander_node_remove(9)
• mpi3mr_expander_remove(9)
• mpi3mr_report_tgtdev_to_sas_transport(9)
• mpi3mr_remove_tgtdev_from_sas_transport(9)
• mpi3mr_get_port_id_by_sas_phy(9)
• mpi3mr_get_port_id_by_rphy(9)
• mpi3mr_get_expander_phy_error_log(9)
• mpi3mr_transport_get_linkerrors(9)
• mpi3mr_transport_get_enclosure_identifier(9)
• mpi3mr_transport_get_bay_identifier(9)
• mpi3mr_expander_phy_control(9)
• mpi3mr_transport_phy_reset(9)
• mpi3mr_transport_phy_enable(9)
• mpi3mr_transport_phy_speed(9)
• mpi3mr_map_smp_buffer(9)
• mpi3mr_unmap_smp_buffer(9)
• mpi3mr_transport_smp_handler(9)

like, that is a friend group 🫶 💜

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ngl the whole thing lives in ./drivers/scsi/mpi3mr — go say hi to the source sometime, she's nice 😌

and that's the page!! mwah 💋 this baby shipped in October 2026, source ./drivers/scsi/mpi3mr, and honestly? iconic from start to finish. bye bestie 🦋✨🎀