STRUCT EF4_BUFFER(9)

💅 struct ef4_buffer(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — today's main character is struct ef4_buffer, and honestly? she's a whole vibe. 🎀

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🌸 NAME 🌸

struct ef4_buffer — a general-purpose DMA buffer. yes ma'am, general purpose, she does it all 🫶

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✨ SYNOPSIS ✨

struct ef4_buffer {
    void *addr;
    dma_addr_t dma_addr;
    unsigned int len;
 };

like, that's it. three fields. little legend behavior honestly 👑

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🦋 Members 🦋

• addr — the host base address of the buffer. this is where it lives on your side of the fence 💖
• dma_addr — the DMA base address of the buffer. same buffer, different address, device's-eye view ✨
• len — buffer length, in bytes. she has to know how big she is, periodt 📏

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🧚 Description 🧚

so the NIC uses these buffers for its interrupt status registers and its MAC stats dumps. that's the whole assignment. no cap, that's what she's for 💅

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/net/ethernet/sfc/falcon/net_driver.h
• struct ef4_special_buffer(9)
• struct ef4_tx_buffer(9)
• struct ef4_tx_queue(9)
• struct ef4_rx_buffer(9)
• struct ef4_rx_page_state(9)
• struct ef4_rx_queue(9)
• struct ef4_channel(9)
• struct ef4_msi_context(9)
• struct ef4_channel_type(9)
• struct ef4_link_state(9)
• struct ef4_phy_operations(9)
• enum ef4_phy_mode(9)
• struct ef4_hw_stat_desc(9)
• struct ef4_nic(9)
• struct ef4_nic_type(9)

like the whole friend group showed up to the function 😭💜 go say hi to all of them, iykyk 🦋

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ngl bestie, that SEE ALSO list is long but it's giving "the entire extended family at the cookout" — every single one of them is invited, so don't skip anyone 🙈

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and that's the page!! 💖 this one came from ./drivers/net/ethernet/sfc/falcon, dated October 2026, and it's titled struct ef4_buffer(9) — ok bye, ily, go read the next manpage 🎀💜✨