STRUCT IWL_RF_CFG(9)

💖 struct iwl_rf_cfg(9) 💖

okay so bestie, welcome to the Kernel API Manual page for struct iwl_rf_cfg — this is the RF/CRF configuration data struct. no cap, it is giving “hardware config central” and we are here for it. 💅✨

🌸 NAME 🌸

struct iwl_rf_cfg — RF/CRF configuration data

✨ SYNOPSIS ✨

here is the exact shape, copied character for character, no edits:

       struct iwl_rf_cfg {
           const char *fw_name_pre;
           const struct iwl_ht_params ht_params;
           const struct iwl_eeprom_params *eeprom_params;
           const struct iwl_pwr_tx_backoff *pwr_tx_backoffs;
           const struct iwl_tt_params *thermal_params;
           enum iwl_led_mode led_mode;
           enum iwl_nvm_type nvm_type;
           u32 max_data_size;
           u32 max_inst_size;
           u32 dccm_offset;
           u32 dccm_len;
           u32 dccm2_offset;
           u32 dccm2_len;
           u16 nvm_ver;
           u16 nvm_calib_ver;
           u16 bw_limit;
           u32 rx_with_siso_diversity:1, tx_with_siso_diversity:1,
       internal_wimax_coex:1, host_interrupt_operation_mode:1,
       lp_xtal_workaround:1, vht_mu_mimo_supported:1, uhb_supported:1,
       unii9_supported:1, eht_supported:1, uhr_supported:1;
           u8 valid_tx_ant;
           u8 valid_rx_ant;
           u8 non_shared_ant;
           u16 ucode_api_max;
           u16 ucode_api_min;
           u16 num_rbds;
        };

🫶 Members 🫶

• fw_name_pre — Firmware filename prefix. The api version and extension (.ucode) will be added to filename before loading from disk. The filename is constructed as <fw_name_pre>-<api>.ucode. name will be generated dynamically.
• ht_params — point to ht parameters.
• eeprom_params — EEPROM parameters (old devices).
• pwr_tx_backoffs — translation table between power limits and backoffs.
• thermal_params — Thermal throttling parameters.
• led_mode — 0=blinking, 1=On(RF On)/Off(RF Off) — yes bestie, those are the modes.
• nvm_type — see enum iwl_nvm_type.
• max_data_size — The maximal length of the fw data section (only DVM).
• max_inst_size — The maximal length of the fw inst section (only DVM).
• dccm_offset — offset from which DCCM begins.
• dccm_len — length of DCCM (including runtime stack CCM).
• dccm2_offset — offset from which the second DCCM begins.
• dccm2_len — length of the second DCCM.
• nvm_ver — NVM version.
• nvm_calib_ver — NVM calibration version.
• bw_limit — bandwidth limit for this device, if non-zero.
• rx_with_siso_diversity — 1x1 device with rx antenna diversity.
• tx_with_siso_diversity — 1x1 device with tx antenna diversity.
• internal_wimax_coex — internal wifi/wimax combo device.
• host_interrupt_operation_mode — device needs host interrupt operation mode set.
• lp_xtal_workaround — low-power crystal workaround needed.
• vht_mu_mimo_supported — VHT MU-MIMO support.
• uhb_supported — ultra high band channels supported.
• unii9_supported — UNII-9 channels supported.
• eht_supported — EHT supported.
• uhr_supported — UHR supported.
• valid_tx_ant — valid transmit antenna.
• valid_rx_ant — valid receive antenna.
• non_shared_ant — the antenna that is for WiFi only.
• ucode_api_max — Highest version of uCode API supported by driver.
• ucode_api_min — Lowest version of uCode API supported by driver.
• num_rbds — number of receive buffer descriptors to use (only used for multi-queue capable devices).

🦋 Description 🦋

The whole point is that we enable the driver to be backward compatible wrt. hardware features. API differences in uCode shouldn’t be handled here but through TLVs and/or the uCode API version instead. periodt. 🫶

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/wireless/intel/iwlwifi/iwl-config.h
• enum iwl_nvm_type(9)
• struct iwl_fw_mon_reg(9)
• struct iwl_fw_mon_regs(9)
• struct iwl_family_base_params(9)
• struct iwl_tt_params(9)
• struct iwl_mac_cfg(9)

cute sign-off bestie: source/version is ./drivers/net/wireless/intel/i..., date is October 2026, and the page is still struct iwl_rf_cfg(9) — iconic, honestly. 🎀💜