STRUCT IWL_LARI_CONFIG_EXTENSION_CMD(9)

💖 struct iwl_lari_config_extension_cmd(9) 💖

okay so bestie, welcome to the Kernel API Manual — yes we're reading kernel API docs together, this is our life now and honestly? iconic. today's main character is a struct that extends the LARI configuration. ngl it's a whole vibe. 🦋

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✨ NAME ✨

struct iwl_lari_config_extension_cmd — extend LARI configuration. that's it, that's the tweet. 💅

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🌸 SYNOPSIS 🌸

struct iwl_lari_config_extension_cmd {
    struct iwl_bios_config_hdr dsm_table_hdr;
    __le32 oem_uhb_allow_extension_bitmap;
    __le32 reserved[10];
 };

look at her. three fields. clean. minimal. she understood the assignment. 🎀

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💜 Members 💜

• dsm_table_hdr — the BIOS DSM table source and revision, like it's showing up with its full ID at the door. who is she? where does she come from? this field knows. 🌈
• oem_uhb_allow_extension_bitmap — the extension bitmap for the OEM UHB config. yes it's a whole mouthful, yes it's important, no we're not skipping it. 🔥
• reserved — reserved. that's it. it's reserved. it's sitting there being reserved. do not touch, do not perceive, do not speak to her. 🙈

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🧚 Description 🧚

okay so here's the tea, and it's actually kind of serious so listen up.

LARI_CONFIG_CHANGE's version must remain stable for frozen firmware. like, must. no cap. 🫶

here's the problem tho: the driver might not know this version, but it still loads that frozen FW and then sends some default old version of LARI — and that makes the FW assert about the bad size of it. yeah. 😭 a whole firmware assertion. not the vibe.

to handle this, we do the following:

1. For newer firmware: increase the LARI_CONFIG_CHANGE version to support the new firmware API with extra UHB bits. slay, moving forward, growing, evolving. ✨
2. For frozen firmware: add a special alternative API that doesn't require modifying the frozen LARI_CONFIG_CHANGE's version. because we do not disturb the frozen ones. they're chilling. let them chill. 🧊

bestie this is literally the whole reason this struct exists — two paths, one for the new hotness, one for the frozen firmware that we are absolutely not allowed to poke. the way that firmware version stability is sacred… 👑

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⭐ SEE ALSO ⭐

the whole friend group showed up, and we're listing every single one of them because nobody gets left out:

• Kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h
• enum iwl_regulatory_and_nvm_subcmd_ids(9)
• enum iwl_nvm_access_op(9)
• enum iwl_nvm_access_target(9)
• enum iwl_nvm_section_type(9)
• struct iwl_nvm_access_cmd(9)
• struct iwl_nvm_access_resp(9)
• enum iwl_nvm_info_general_flags(9)
• struct iwl_nvm_get_info_general(9)
• enum iwl_nvm_mac_sku_flags(9)
• struct iwl_nvm_get_info_sku(9)
• struct iwl_nvm_get_info_phy(9)
• struct iwl_nvm_get_info_regulatory_v1(9)
• struct iwl_nvm_get_info_regulatory_v2(9)
• struct iwl_nvm_get_info_rsp_v3(9)
• struct iwl_nvm_get_info_rsp_v4(9)
• struct iwl_nvm_get_info_regulatory(9)
• struct iwl_nvm_get_info_rsp(9)
• struct iwl_nvm_access_complete_cmd(9)
• struct iwl_mcc_update_cmd(9)
• enum iwl_geo_information(9)
• struct iwl_mcc_update_resp_v3(9)
• struct iwl_mcc_update_resp_v4(9)
• struct iwl_mcc_update_resp_v8(9)
• struct iwl_mcc_chub_notif(9)
• struct iwl_tas_config_cmd_common(9)
• struct iwl_tas_config_cmd_v3(9)
• enum iwl_tas_uhb_allowed_flags(9)
• struct iwl_tas_config_cmd_v4(9)
• enum bios_source(9)
• struct iwl_bios_config_hdr(9)
• struct bios_value_u32(9)
• struct iwl_tas_config_cmd(9)
• enum iwl_lari_config_masks(9)
• struct iwl_lari_config_change_cmd_v1(9)
• struct iwl_lari_config_change_cmd_v6(9)
• struct iwl_lari_config_change_cmd_v8(9)
• struct iwl_lari_config_change_cmd(9)
• struct iwl_pnvm_init_complete_ntfy(9)
• struct iwl_mcc_allowed_ap_type_cmd_v1(9)
• struct iwl_mcc_allowed_ap_type_cmd(9)

like I said. whole friend group. 41 of them. we counted. 💀

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and that's the page bestie!! 🌸 source on this one is ./drivers/net/wireless/intel/i... (yes it's abbreviated in the original, don't come for me) and it's dated October 2026 — so mark your calendars, this manual page is from the future, she's a time traveler, we stan. 🕰️✨ bye bestie, go read some more kernel headers, ily, mwah 💋💖