STRUCT EFX_RX_PAGE_STATE(9)

💅 struct efx_rx_page_state(9) — from the Kernel API Manual, bestie 🎀

okay so real talk, this one is a tiny little struct with main character energy ✨ it lives in the Kernel API Manual, and it's giving "small but crucial" fr fr.

---

🌸 NAME 🌸

struct efx_rx_page_state — the page-based rx buffer state, no cap 💖

---

✨ SYNOPSIS ✨

struct efx_rx_page_state {
    dma_addr_t dma_addr;
    unsigned int __pad[];
};

look at her. two members. flawless. 👑

---

🦋 Members 🦋

• dma_addr — the dma address of this page, literally that's it, that's the whole vibe 🫶

---

💜 Description 💜

so the way this works: this struct gets inserted at the start of every single page that's allocated for receive buffers. every one. no skips. 💅

and why?? because it facilitates sharing dma mappings between recycled rx buffers and those that get passed up to the kernel — iykyk, it's the little handshake that keeps everything flowing 😭✨ iconic behaviour honestly.

---

🌈 SEE ALSO 🌈

it's a whole friend group, bestie 💖 first up the kernel file itself: ./drivers/net/ethernet/sfc/siena/net_driver.h — then the squad:

• struct efx_buffer(9)
• struct efx_special_buffer(9)
• struct efx_tx_buffer(9)
• struct efx_tx_queue(9)
• struct efx_rx_buffer(9)
• struct efx_rx_queue(9)
• struct efx_channel(9)
• struct efx_msi_context(9)
• struct efx_channel_type(9)
• struct efx_link_state(9)
• enum efx_phy_mode(9)
• struct efx_hw_stat_desc(9)
• struct efx_rss_context(9)
• struct efx_arfs_rule(9)
• struct efx_async_filter_insertion(9)
• struct efx_nic(9)
• struct efx_nic_type(9)

go read them too, they're all slaying in their own lanes 🔥

---

ngl this page is short but she ate. zero notes. 💀🫶

---

later bestie 😘 this was birthed from ./drivers/net/ethernet/sfc/siena, dated October 2026, and she's formally known as struct efx_rx_page_state(9) 🎀✨💜