STRUCT OCTEON_TEMP_BUFFER(9)

🦋 struct octeon_temp_buffer(9) 🦋

okay so this is a page from the Kernel API Manual, and bestie, it's literally about a struct that's giving "bounce buffer for USB transfers." yes, that's its whole thing. let's get into it ✨

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🌸 NAME 🌸

struct octeon_temp_buffer — a bounce buffer for USB transfers 💅

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🎀 SYNOPSIS 🎀

struct octeon_temp_buffer {
    void *orig_buffer;
    u8 data[];
};

like, that's the whole shape of it. two members. iconic. no notes. 🫶

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⭐ Members ⭐

• orig_buffer — the original buffer that the USB stack passed in. the og, the source material, the one that started it all 💖
• data — the newly allocated temporary buffer, and no, the meta-data is not included in here, so don't come for it 🙈

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🔥 Description 🔥

so here's the situation, bestie: both the DMA engine and FIFO mode will always transfer full 32-bit words. like, always. that's just the vibe check they refuse to fail. so if the buffer is too short for that whole 32-bit-word situation, we need to allocate a temporary one — and this struct is literally the representation of that temporary buffer. it's not deep, it's just doing its job. main character energy, honestly 👑

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💜 SEE ALSO 💜

kernel file ./drivers/usb/host/octeon-hcd.c and the whole friend group:

• enum cvmx_usb_speed(9)
• enum cvmx_usb_transfer(9)
• enum cvmx_usb_direction(9)
• enum cvmx_usb_status(9)
• struct cvmx_usb_port_status(9)
• struct cvmx_usb_iso_packet(9)
• enum cvmx_usb_initialize_flags(9)
• enum cvmx_usb_pipe_flags(9)
• struct cvmx_usb_transaction(9)
• struct cvmx_usb_pipe(9)
• struct octeon_hcd(9)
• octeon_alloc_temp_buffer(9)
• octeon_free_temp_buffer(9)
• octeon_map_urb_for_dma(9)
• octeon_unmap_urb_for_dma(9)

that's the group chat, go say hi 🫶

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aaaand that's the page, bestie!! 🎀 this one's from ./drivers/usb/host, dated October 2026, and it's filed under struct octeon_temp_buffer(9). slay, go read the other seventeen now 💅✨