iwl_parse_nvm_mcc_info(9)

📦 version 7.3.1, in nixpkgs unstable

✨ iwl_parse_nvm_mcc_info(9) ✨

okay bestie, so this is a page straight out of the Kernel API Manual and we're about to get very into it — it's iwl_parse_nvm_mcc_info, and it does exactly what it says on the tin 💅

🌸 NAME 🌸

iwl_parse_nvm_mcc_info — parse MCC (mobile country code) info coming from FW 🛰️

🎀 SYNOPSIS 🎀

struct ieee80211_regdomain * iwl_parse_nvm_mcc_info (struct iwl_trans
*trans , int num_of_ch , __le32 *channels , u16 fw_mcc , u16 geo_info ,
u32 cap , u8 resp_ver , enum iwl_puncturing_status *puncturing_status );

like, look at that signature. she's long. she's iconic. she returns a struct ieee80211_regdomain * and she takes eight whole arguments 😭 periodt.

🦋 ARGUMENTS 🦋

  • trans — the transport 🚌
  • num_of_ch — the number of channels 🔢
  • channels — channel map 🗺️
  • fw_mcc — firmware country code 🌍
  • geo_info — geo info value 📍
  • cap — capability 💪
  • resp_ver — FW response version 🏷️
  • puncturing_status — FW puncturing status for current MCC, when available 🕳️

💖 DESCRIPTION 💖

so what does she actually do? This function parses the regulatory channel data received as a MCC_UPDATE_CMD command. that's the whole vibe. no cap. 🧚

🔥 RETURN 🔥

she hands you back a newly allocation regulatory domain, to be given to the regulatory core 👑. In case the geo_info is set handle accordingly ⚠️. An ERR_PTR is returned on error 💀. If not given to the regulatory core, the user is responsible for freeing the regdomain returned here with kfree — yes, you. it's giving main character energy and main character responsibility fr fr 🙈

bestie pls don't leak memory, kfree is right there 🫶

🌈 SEE ALSO 🌈

  • Kernel file ./drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.h
  • enum iwl_nvm_sbands_flags(9)
  • enum iwl_puncturing_status(9)
  • struct iwl_reg_capa(9)
  • enum iwl_nvm_channel_flags(9)
  • struct iwl_nvm_section(9)
  • iwl_read_external_nvm(9)

go read them. slay. 📚✨

aaaand that's the page!! 💜 sign-off time: this lil beauty lives at ./drivers/net/wireless/intel/i... and it's dated October 2026 — so mark your calendars, screenshot it, send it to the group chat, whatever you gotta do 🎀 bye bestie!! 🦋

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