STRUCT IWL_TRANS(9)

💅 struct iwl_trans(9) — the Kernel API Manual, bestie edition

okay so this is struct iwl_trans(9), the actual transport common data ✨ from the Kernel API Manual. ngl this struct is basically the main character of the iwlwifi transport layer — it's holding everything together and it knows it 💖

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🌸 NAME

struct iwl_trans — transport common data 💫

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🎀 SYNOPSIS

struct iwl_trans {
    bool csme_own;
    struct iwl_op_mode *op_mode;
    const struct iwl_mac_cfg *mac_cfg;
    const struct iwl_rf_cfg *cfg;
    struct iwl_drv *drv;
    struct iwl_trans_config conf;
    enum iwl_trans_state state;
    unsigned long status;
    struct device *dev;
    const struct iwl_trans_info info;
    bool reduced_cap_sku;
    bool step_urm;
    bool suppress_cmd_error_once;
    u8 pnvm_loaded:1;
    u8 fail_to_parse_pnvm_image:1;
    u8 reduce_power_loaded:1;
    u8 failed_to_load_reduce_power_image:1;
    struct dentry *dbgfs_dir;
  #ifdef CONFIG_LOCKDEP;
    struct lockdep_map sync_cmd_lockdep_map;
  #endif;
    struct iwl_trans_debug dbg;
    struct iwl_self_init_dram init_dram;
    struct {
      struct delayed_work wk;
      struct iwl_fw_error_dump_mode mode;
      bool during_reset;
    } restart;
    u8 request_top_reset:1, do_top_reset:1;
    char trans_specific[];
 };

slay, look at all those fields 🫶 careful with the bitfields bestie, they're literally single bits and they are NOT here to play 😭

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🦋 Members

here's the full roster, no skips, no "you get the idea" — every single one 💅

• csme_own — true if we couldn't get ownership on the device 😬 (yes that's how it's phrased, yes it's a little cursed)
• op_mode — pointer to the op_mode
• mac_cfg — the trans-specific configuration part ✨
• cfg — pointer to the configuration
• drv — pointer to iwl_drv
• conf — configuration set by the opmode before enter
• state — current device state
• status — a bit-mask of transport status flags 🚩
• dev — pointer to struct device * that represents the device
• info — device information for use by other layers 🫶 (sharing is caring)
• reduced_cap_sku — reduced capability supported SKU
• step_urm — STEP is in URM, no support for MCS>9 in 320 MHz 👀
• suppress_cmd_error_once — suppress "FW error in SYNC CMD" once, e.g. for testing 🙈
• pnvm_loaded — indicates PNVM was loaded ✅
• fail_to_parse_pnvm_image — set to true if pnvm parsing failed 💀
• reduce_power_loaded — indicates reduced power section was loaded
• failed_to_load_reduce_power_image — set to true if pnvm loading failed 😭
• dbgfs_dir — iwlwifi debugfs base dir for this device
• sync_cmd_lockdep_map — lockdep map for checking sync commands
• dbg — additional debug data, see struct iwl_trans_debug
• init_dram — FW initialization DMA data
• restart — restart worker data
  • restart.wk — restart worker
  • restart.mode — reset/restart error mode information
  • restart.during_reset — error occurred during previous software reset ⚠️
• request_top_reset — TOP reset was requested, used by the reset worker that should be scheduled (with appropriate reason)
• do_top_reset — indication to the (PCIe) transport/context-info to do the TOP reset
• trans_specific — data for the specific transport this is allocated for/with 🧚

lowkey a lot of these are true/false flags telling you something went sideways — please actually read them before you assume everything is fine bestie 💀

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🔥 SEE ALSO

the whole friend group, in order, no cap 🫶

• Kernel file ./drivers/net/wireless/intel/iwlwifi/iwl-trans.h
• Transport layer - what is it ?(9)
• Life cycle of the transport layer(9)
• enum CMD_MODE(9)
• struct iwl_device_cmd(9)
• struct iwl_device_tx_cmd(9)
• enum iwl_hcmd_dataflag(9)
• struct iwl_host_cmd(9)
• enum iwl_trans_status(9)
• struct iwl_dump_sanitize_ops(9)
• struct iwl_trans_config(9)
• struct iwl_trans_rxq_dma_data(9)
• struct iwl_pnvm_image(9)
• enum iwl_trans_state(9)
• Platform power management(9)
• enum iwl_ini_cfg_state(9)
• struct iwl_dram_data(9)
• struct iwl_dram_regions(9)
• struct iwl_fw_mon(9)
• struct iwl_self_init_dram(9)
• struct iwl_imr_data(9)
• struct iwl_pc_data(9)
• struct iwl_trans_debug(9)
• struct iwl_trans_info(9)
• iwl_trans_resched_with_nic_access(9)

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and that's the whole page, periodt 🌈💜 before you go: this one came from ./drivers/net/wireless/intel/i... and it's dated October 2026 — so yeah, future-dated manpage energy, we love to see it 🎀 go read the transport layer docs, ily, bye ✨💖