libeth_xsktmo_req_csum(9)

💖 XSk Tx metadata op to request checksum offload 💖

okay bestie, welcome to the libeth_xsktmo_req_csum(9) page from the Kernel API Manual — it’s giving “tiny helper, big checksum-offload energy” ✨

---

🌸 NAME 🌸

libeth_xsktmo_req_csum — XSk Tx metadata op to request checksum offload. That’s the whole name, and yes it ate 💅

---

✨ SYNOPSIS ✨

void libeth_xsktmo_req_csum (u16 csum_start , u16 csum_offset , void *priv );

---

🎀 ARGUMENTS 🎀

• csum_start — unused. Not “used a little,” not “used sometimes.” Unused, bestie 🙈
• csum_offset — unused. Same vibe. Unused 🫶
• priv — the libeth_xdp_tx_desc from the filling helper. That’s the one you pass in 💖

---

💅 DESCRIPTION 💅

This is the generic implementation of ::tmo_request_checksum. Iconic, lowkey, does its one job ✨

⚠️ caveat time, bestie: it works only when HW doesn’t require filling checksum offsets and other parameters beside the checksum request bit. That’s the whole condition. No cap.

Consider using it within libeth_xsktmo unless the driver requires HW-specific callbacks. That’s the recommendation, fr fr 🦋

---

🦋 SEE ALSO 🦋

• Kernel file ./include/net/libeth/xsk.h — the whole friend group lives here 💜
• 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_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)
• struct libeth_xskfq(9)
• libeth_xsk_buff_xdp_get_dma(9)
• libeth_xskfqe_alloc(9)

---

mwah 💋 — source: ./include/net/libeth, version/date: October 2026, and this was libeth_xsktmo_req_csum(9) from the Kernel API Manual. bye bestie, go request that checksum 🫶