STRUCT IWL_HE_STA_CONTEXT_CMD_V2(9)

💖 struct iwl_he_sta_context_cmd_v2 — NAME 💖

okay so bestie, welcome to the Kernel API Manual ✨ this page is literally all about struct iwl_he_sta_context_cmd_v2 — the thing that configures the firmware to work with an HE AP. yes. that's the whole vibe. HE AP. firmware. slay 🫶

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🌸 SYNOPSIS 🌸

like, here's the whole struct, character for character, no cap:

struct iwl_he_sta_context_cmd_v2 {
    u8 sta_id;
    u8 tid_limit;
    u8 reserved1;
    u8 reserved2;
    __le32 flags;
    u8 ref_bssid_addr[6];
    __le16 reserved0;
    __le32 htc_flags;
    u8 frag_flags;
    u8 frag_level;
    u8 frag_max_num;
    u8 frag_min_size;
    struct iwl_he_pkt_ext_v1 pkt_ext;
    u8 bss_color;
    u8 htc_trig_based_pkt_ext;
    __le16 frame_time_rts_th;
    u8 rand_alloc_ecwmin;
    u8 rand_alloc_ecwmax;
    __le16 reserved3;
    struct iwl_he_backoff_conf trig_based_txf[AC_NUM];
    u8 max_bssid_indicator;
    u8 bssid_index;
    u8 ema_ap;
    u8 profile_periodicity;
    u8 bssid_count;
    u8 reserved4[3];
 };

it's giving field after field after field and honestly? iconic 💅

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🦋 Members 🦋

okay so let's go through every single one because we do not skip. periodt.

• sta_id — the STA id. that's it, that's the whole thing 💖
• tid_limit — max num of TIDs in TX HE-SU multi-TID agg. and listen, the values matter: 0 = bad value (do not do this), 1 = multi-tid not supported, 2..8 = tid limit. iykyk ✨
• reserved1 — reserved byte for future use 🙈 (future us is gonna be so grateful)
• reserved2 — reserved byte for future use, again. two of them. matching set 🎀
• flags — see iwl_11ax_sta_ctxt_flags. go look, bestie 👑
• ref_bssid_addr — reference BSSID used by the AP 🦋
• reserved0 — reserved 2 bytes for aligning the ref_bssid_addr field to 8 bytes. it's an alignment thing, it's fine, it's doing its job 🌸
• htc_flags — which features are supported in HTC 🔥
• frag_flags — frag support in A-MSDU
• frag_level — frag support level
• frag_max_num — max num of "open" MSDUs in the receiver (in power of 2). note the quotes around "open", that's canon 💀
• frag_min_size — min frag size (except last frag). last frag gets to be different, main character energy honestly ⭐
• pkt_ext — optional! exists according to PPE-present bit in the HE-PHY capa. so like, conditional queen 💜
• bss_color — 11ax AP ID that is used in the HE SIG-A to mark inter BSS frame 🌈
• htc_trig_based_pkt_ext — default PE in 4us units
• frame_time_rts_th — HE duration RTS threshold, in units of 32us. that's 32us, not 4us, don't mix em up 😭
• rand_alloc_ecwmin — random CWmin = 2**ECWmin-1 🧚
• rand_alloc_ecwmax — random CWmax = 2**ECWmax-1 🧚 (yes the twin, yes the formula)
• reserved3 — reserved byte for future use 🎀
• trig_based_txf — MU EDCA Parameter set for the trigger based traffic queues. it's an array: struct iwl_he_backoff_conf trig_based_txf[AC_NUM] 💅
• max_bssid_indicator — indicator of the max bssid supported on the associated bss 🌸
• bssid_index — index of the associated VAP 🫶
• ema_ap — AP supports enhanced Multi BSSID advertisement 👑
• profile_periodicity — number of Beacon periods that are needed to receive the complete VAPs info ⭐
• bssid_count — actual number of VAPs in the MultiBSS Set 🔥
• reserved4 — alignment. just alignment. that's its whole personality 🙈 (it's u8 reserved4[3], for the record)

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🌈 SEE ALSO 🌈

bestie the rabbit hole is deep and honestly i'm obsessed. the source of truth lives in the kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/mac.h, and then there's all of this:

• 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_mac_ctx_cmd(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_v3(9)
• struct iwl_he_monitor_cmd(9)

v1, v2, v3 — it's a whole family and v2 is the middle child but we love her 💖

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okay and just so we're clear, this page came from ./drivers/net/wireless/intel/i... and it's dated October 2026, and the title up top is struct iwl_h...ntext_cmd_v2(9) — so like, that's the whole citation situation, bestie 🎀

that's it! go forth and configure that firmware ✨💅🦋