libeth_xsk_init_wakeup(9)

💅 libeth_xsk_init_wakeup 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this little cutie lives in section 9 of the manual (the kernel-functions girly pop section, iykyk) and today we're talking about libeth_xsk_init_wakeup. it's giving "small function, big responsibilities" fr fr 🎀

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✨ NAME ✨

libeth_xsk_init_wakeup — initialize libeth XSk wakeup structure 🦋

🌸 SYNOPSIS 🌸

void libeth_xsk_init_wakeup (call_single_data_t *csd , struct
       napi_struct *napi );

notice the void bestie?? it returns literally nothing. it just does the thing and dips 💅

🎀 ARGUMENTS 🎀

• csd — the struct to initialize. yes, this one. the one you're holding. go on, init it ✨
• napi — the NAPI corresponding to this queue. your queue's very own main character 🌈

💖 DESCRIPTION 💖

okay so here's the tea ☕ — libeth_xdp uses inter-processor interrupts to perform XSk wakeups. no cap, that's the whole vibe.

and in order to do that?? the corresponding CSDs must be initialized when creating the queues. that's it. that's the job. lowkey iconic, highkey essential 👑

so like. don't skip this step. the queues need their CSDs initialized at creation time, and then the interrupts can actually happen. periodt 🫶

🔥 SEE ALSO 🔥

• kernel file ./drivers/net/ethernet/intel/libeth/xsk.c — go read the source, bestie, it's all there 📖
• libeth_xsk_buff_free_slow(9)
• libeth_xsk_buff_add_frag(9)
• libeth_xsk_buff_stats_frags(9)
• __libeth_xsk_run_prog_slow(9)
• libeth_xsk_prog_exception(9)
• libeth_xskfq_create(9)
• libeth_xskfq_destroy(9)
• libeth_xsk_wakeup(9)
• libeth_xsk_setup_pool(9)

that's the whole friend group right there, all nine of them, all in (9) — a whole squad of kernel girlies 💜

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and that's the page!! 🎉 this one came from the source ./drivers/net/ethernet/intel/l... and the version date on it is October 2026 — so yeah, future-coded a lil bit, we love a time traveler ⭐ mwah, go init those CSDs, ily, bye!! 😭💖🧚