STRUCT LIBETH_XSKFQ(9)

💖 NAME 💖

okay so <pink>struct libeth_xskfq</pink> — it's a struct, it's giving "structure representing an XSk buffer (fill) queue", literally that's the whole vibe, that's the whole point of it, bestie 🎀

This is a page from the Kernel API Manual (section 9), so like… kernel-internal lore, iykyk ✨

🦋 SYNOPSIS 🦋

struct libeth_xskfq {
    struct {
      struct xsk_buff_pool    *pool;
      struct libeth_xdp_buff  **fqes;
      void *descs;
      u32 ntu;
      u32 count;
    };
    u32 pending;
    u32 thresh;
    u32 buf_len;
    u32 truesize;
    int nid;
 };

no cap, that's the whole shape of it 👑

🌸 Members 🌸

• {unnamed_struct} — anonymous. she has no name. she's mysterious. main character energy tbh 🙈
• pool — the xsk_buff_pool that handles buffer management for her 💅
• fqes — an array of XSk buffer pointers, cute little collection ✨
• descs — opaque pointer to the HW descriptor array (opaque = don't ask, she's not telling) 🫶
• ntu — index of the next buffer to poll. the next one. keep up, bestie ⭐
• count — number of descriptors/buffers the queue has, like the headcount at a party 🎀
• pending — current number of XSkFQEs to refill (the to-do list, lowkey) 🦋
• thresh — threshold below which the queue is refilled. cross it and she restocks, periodt 🔥
• buf_len — HW-writeable length per each buffer 📏
• truesize — step between consecutive buffers, and it's 0 if none exists 💀
• nid — ID of the closest NUMA node with memory. proximity is everything, ngl 🌈

👑 SEE ALSO 👑

Kernel file ./include/net/libeth/xsk.h — and honestly the whole friend group, all of them, no one left out:

• libeth_xsk_tx_queue_head(9)
• libeth_xsk_tx_queue_frag(9)
• libeth_xsk_tx_queue_bulk(9)
• libeth_xsk_tx_fill_buf(9)
• libeth_xsk_tx_flush_bulk(9)
• libeth_xsktmo_req_csum(9)
• __libeth_xsk_xmit_fill_buf_md(9)
• __libeth_xsk_xmit_fill_buf(9)
• libeth_xsk_xmit_fill_buf(9)
• libeth_xsk_xmit_do_bulk(9)
• libeth_xsk_tx_init_bulk(9)
• libeth_xsk_process_buff(9)
• __libeth_xsk_run_prog(9)
• libeth_xsk_run_prog(9)
• __libeth_xsk_run_pass(9)
• libeth_xsk_run_pass(9)
• libeth_xsk_finalize_rx(9)
• LIBETH_XSK_DEFINE_FLUSH_TX(9)
• LIBETH_XSK_DEFINE_RUN_PROG(9)
• LIBETH_XSK_DEFINE_RUN_PASS(9)
• LIBETH_XSK_DEFINE_RUN(9)
• LIBETH_XSK_DEFINE_FINALIZE(9)
• libeth_xsk_buff_xdp_get_dma(9)
• libeth_xskfqe_alloc(9)

that's the whole page, bestie, you ate that 💅✨

sign-off szn: this iconic little number lives at ./include/net/libeth and it was dated October 2026 🗓️💖 mwah, go read the source, ily 🫶🌸