efx_tc_incomplete_mangle(9)

💅 efx_tc_incomplete_mangle 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this one's a section 9 page, and it's all about catching leftover partial mangles before they cause chaos. let's get into it 🎀

---

✨ NAME ✨

efx_tc_incomplete_mangle — check for leftover partial pedits 🕵️‍♀️

---

🌸 SYNOPSIS 🌸

int efx_tc_incomplete_mangle (struct efx_tc_mangler_state *mung , struct
       netlink_ext_ack *extack );

---

🦋 ARGUMENTS 🦋

• mung — the accumulator for partial mangles, like a little basket where the leftover half-done stuff gets collected 🧺
• extack — the netlink extended ack, which is what you use to report errors back 📨

---

💖 DESCRIPTION 💖

so here's the tea ☕ — the MAE can only overwrite whole fields. like, that's its whole thing, no cap.

which means any partial field mangle that's still hanging around when you reach packet delivery — that's either mirred or the end of the TC actions — cannot be offloaded 😭. not happening. nope.

so this function's job is literally just to check for any of those leftovers and reject them with -EOPNOTSUPP. that's it, that's the whole vibe check 💅. leftover partial pedits found? rejected. periodt.

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/sfc/tc.c 🌿
• TC conntrack sequences(9)
• struct efx_tc_mangler_state(9)
• efx_tc_mangle(9)

---

and that's the page, bestie 🫶 — brought to you by the fine folks over at ./drivers/net/ethernet/sfc, with a <star>October 2026</star> date stamp on it. go off, go mangle some whole fields (only whole ones tho 👀) ✨💜