STRUCT SOF_COPIER_GATEWAY_CFG(9)

💅 struct sof_copier_gateway_cfg(9) — bestie's guide to the IPC gateway config

okay so first things first: this is a page straight outta the Kernel API Manual, and the star of the show is struct sof_copier_gateway_cfg — literally the IPC gateway configuration. yes queen, we're in kernel-land now 🎀

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✨ NAME ✨

struct sof_copier_gateway_cfg — the IPC gateway configuration. that's it, that's the vibe 💖

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🌸 SYNOPSIS 🌸

here's the whole struct, copy-pasted with love and zero typos:

struct sof_copier_gateway_cfg {
    uint32_t node_id;
    uint32_t dma_buffer_size;
    uint32_t config_length;
    uint32_t config_data[];
};

notice the config_data[]? yeah bestie that's an array with no size — it's giving flexible-array-member energy 🌈

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👑 Members 👑

• node_id — the ID of the Gateway Node. like, which node are we even talking about? this one, babes. 🫶
• dma_buffer_size — the preferred Gateway DMA buffer size, and it's measured in bytes fr fr. "preferred" is doing a lot of work here, so like… it's a preference, not a promise, iykyk 💅
• config_length — the length of the gateway node configuration blob that's specified in #config_data. yes, the blob. we love a blob ✨
• config_data — and here it is: the gateway node configuration blob itself. the main character of the whole struct, honestly 🌟

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🦋 SEE ALSO 🦋

okay don't leave yet, there's a whole little family of structs and they all live in the kernel file ./sound/soc/sof/ipc4-topology.h. gathering them all here, no gatekeeping 💜

• struct sof_ipc4_pipeline(9)
• struct ipc4_pipeline_set_state_data(9)
• struct sof_ipc4_pin_format(9)
• struct sof_ipc4_available_audio_format(9)
• struct sof_ipc4_copier_data(9)
• struct sof_ipc4_gtw_attributes(9)
• struct sof_ipc4_dma_device_stream_ch_map(9)
• struct sof_ipc4_dma_stream_ch_map(9)
• struct sof_ipc4_dma_config(9)
• struct sof_ipc4_dma_config_tlv(9)
• struct sof_ipc4_copier(9)
• struct sof_ipc4_ctrl_value_chan(9)
• struct sof_ipc4_control_data(9)
• struct sof_ipc4_control_msg_payload(9)
• struct sof_ipc4_gain_params(9)
• struct sof_ipc4_gain_data(9)
• struct sof_ipc4_gain(9)
• struct sof_ipc4_mixer(9)
• struct sof_ipc4_src(9)
• struct sof_ipc4_asrc(9)
• struct sof_ipc4_base_module_cfg_ext(9)
• struct sof_ipc4_process(9)

like, the whole squad is in ./sound/soc/sof/ipc4-topology.h — go say hi to them, they don't bite 🧚

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ngl if you ever forget what a gateway config looks like, just come back here. four fields. not that deep. slay. 🔥

kisses and good vibes from ./sound/soc/sof, dated October 2026 — that's the source, the version, and the date, all wrapped up with a bow 🎀💖✨