STRUCT IWL_PHY_CONTEXT_CMD(9)

💅 struct iwl_phy_context_cmd(9) 💅

okay bestie, so we're in the Kernel API Manual and today's main character is struct iwl_phy_context_cmd — literally the config of the PHY context (and it's PHY_CONTEXT_CMD = 0x8, iykyk). no cap, she's iconic. 🎀

✨ NAME ✨

struct iwl_phy_context_cmd — the config of the PHY context (because PHY_CONTEXT_CMD = 0x8, periodt). 💅

🦋 SYNOPSIS 🦋

struct iwl_phy_context_cmd {
    __le32 id_and_color;
    __le32 action;
    struct iwl_fw_channel_info ci;
    __le32 lmac_id;
    union {
      __le32 rxchain_info;
      struct {
        u8 sbb_bandwidth;
        u8 sbb_ctrl_channel_loc;
        __le16 puncture_mask;
      };
    };
    __le32 dsp_cfg_flags;
    u8 secondary_ctrl_chnl_loc;
    u8 reserved[3];
 };

like, look at her. absolutely serving struct energy. 🌸

👑 Members 👑

• id_and_color — the ID and color of the relevant Binding. yes bestie, structs have a whole color-coding moment going on. 💖
• action — the action to perform, see enum iwl_ctxt_action. she's got options fr.
• ci — channel info. the whole who/what/where of the channel. 📡
• lmac_id — the lmac id that the phy context belongs to. gotta know which one she's riding with. 🫶
• {unnamed_union} — anonymous. no name, all vibes. 🙈
• rxchain_info — ???. genuinely nobody wrote it down, that's what the original says, we're not gonna pretend otherwise 😭 (lowkey mysterious of her ngl)
• {unnamed_struct} — anonymous again. nested. mysterious. main character energy. ✨
• sbb_bandwidth — 0 disabled, 1 - 40Mhz ... 4 - 320MHz. the way she scales. 🔥
• sbb_ctrl_channel_loc — location of the control channel. 📍
• puncture_mask — bitmap of punctured subchannels. punctured!! like a pierced ear but for subchannels 💀
• dsp_cfg_flags — set to 0. that's it, that's the whole instruction, do not get creative bestie. 🌈
• secondary_ctrl_chnl_loc — location of secondary control channel. the sequel. 🎬
• reserved — reserved to align to 64 bit. she's just there for the ~aesthetic~ alignment and honestly? respect. ⭐

🔍 SEE ALSO 🔍

• Kernel file ./drivers/net/wireless/intel/iwlwifi/fw/api/phy-ctxt.h — go read it, fr fr 📖
• struct iwl_phy_context_cmd_tail(9)
• struct iwl_phy_context_cmd_v1(9)

ok that's the whole page bestie, go slay your firmware dev era 💜

mwah 💋 this came from <code>./drivers/net/wireless/intel/i...</code> and it's dated <code>October 2026</code>, same as the <code>struct iwl_phy_context_cmd(9)</code> header up top. bye babe, see u in the next manpage 🦋✨