STRUCT IWL_MAC_CTX_CMD(9)

💅 struct iwl_mac_ctx_cmd(9) — from the Kernel API Manual, bestie

okay so picture this: you're in the kernel API manual, right, and you run into struct iwl_mac_ctx_cmd. bestie. this is the command structure for configuring MAC contexts. like, the whole vibe of MAC setup goes through here. and its code is MAC_CONTEXT_CMD = 0x28 — write that down, it's on the test 🎀

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✨ NAME ✨

struct iwl_mac_ctx_cmd — the command structure that configures MAC contexts (MAC_CONTEXT_CMD = 0x28) 👑

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🌸 SYNOPSIS 🌸

struct iwl_mac_ctx_cmd {
    __le32 id_and_color;
    __le32 action;
    __le32 mac_type;
    __le32 tsf_id;
    u8 node_addr[6];
    __le16 reserved_for_node_addr;
    u8 bssid_addr[6];
    __le16 reserved_for_bssid_addr;
    __le32 cck_rates;
    __le32 ofdm_rates;
    __le32 protection_flags;
    __le32 cck_short_preamble;
    __le32 short_slot;
    __le32 filter_flags;
    __le32 qos_flags;
    struct iwl_ac_qos ac[AC_NUM+1];
    union {
      struct iwl_mac_data_ap ap;
      struct iwl_mac_data_go go;
      struct iwl_mac_data_sta sta;
      struct iwl_mac_data_p2p_sta p2p_sta;
      struct iwl_mac_data_p2p_dev p2p_dev;
      struct iwl_mac_data_pibss pibss;
      struct iwl_mac_data_ibss ibss;
    };
 };

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🦋 Members 🦋

okay this is the part where we go through every single one, no skipping, no "you get the idea" — periodt 💅

• id_and_color — the ID and color of the MAC. yes, color, it's a whole thing 🎨
• action — the action to perform, see enum iwl_ctxt_action
• mac_type — one of enum iwl_mac_types
• tsf_id — TSF HW timer, one of enum iwl_tsf_id ⏱️
• node_addr — MAC address
• reserved_for_node_addr — reserved, don't touch, it's not for you 🙈
• bssid_addr — BSSID
• reserved_for_bssid_addr — reserved, again, hands off 🫶
• cck_rates — basic rates available for CCK
• ofdm_rates — basic rates available for OFDM
• protection_flags — a combination of enum iwl_mac_protection_flags
• cck_short_preamble — 0x20 for enabling short preamble, 0 otherwise
• short_slot — 0x10 for enabling short slots, 0 otherwise
• filter_flags — a combination of enum iwl_mac_filter_flags
• qos_flags — from enum iwl_mac_qos_flags
• ac — one iwl_mac_qos configuration for each AC
• {unnamed_union} — anonymous, mysterious, main character energy ✨
• ap — AP specific config data, see struct iwl_mac_data_ap
• go — GO specific config data, see struct iwl_mac_data_go
• sta — BSS client specific config data, see struct iwl_mac_data_sta
• p2p_sta — P2P client specific config data, see struct iwl_mac_data_p2p_sta
• p2p_dev — P2P-device specific config data, see struct iwl_mac_data_p2p_dev
• pibss — Pseudo-IBSS specific data, and heads up bestie, it's unused; see struct iwl_mac_data_pibss
• ibss — IBSS specific config data, see struct iwl_mac_data_ibss

lowkey important: that union is anonymous, so all those structs are just... vibing in the same spot. only one at a time, iykyk 🧚

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🔥 SEE ALSO 🔥

go read these, they're all connected, it's giving lore:

Kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/mac.h, enum iwl_mac_protection_flags(9), enum iwl_mac_types(9), enum iwl_tsf_id(9), struct iwl_mac_data_ap(9), struct iwl_mac_data_ibss(9), enum iwl_mac_data_policy(9), struct iwl_mac_data_sta(9), struct iwl_mac_data_go(9), struct iwl_mac_data_p2p_sta(9), struct iwl_mac_data_pibss(9), enum iwl_mac_filter_flags(9), enum iwl_mac_qos_flags(9), struct iwl_ac_qos(9), struct iwl_missed_beacons_notif_ver_3(9), struct iwl_missed_beacons_notif_v4(9), struct iwl_he_backoff_conf(9), enum iwl_he_pkt_ext_constellations(9), struct iwl_he_pkt_ext_v1(9), struct iwl_he_pkt_ext_v2(9), enum iwl_he_sta_ctxt_flags(9), enum iwl_he_htc_flags(9), struct iwl_he_sta_context_cmd_v1(9), struct iwl_he_sta_context_cmd_v2(9), struct iwl_he_sta_context_cmd_v3(9), struct iwl_he_monitor_cmd(9)

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and that's the whole page, bestie 💖 signing off from ./drivers/net/wireless/intel/i... — yeah the path got cut off, tragic, we don't know the rest 😭 — dated October 2026, and the page itself is struct iwl_mac_ctx_cmd(9). slay, go configure some MAC contexts 🎀✨👑