ice_set_init_fdir_seg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ice_set_init_fdir_seg(9) — Kernel API Manual, bestie edition ✨

okay so this is a page from the Kernel API Manual and it's about ice_set_init_fdir_seg(9) — yes that's a whole mouthful, i know, but stay with me 🫶

🌸 NAME 🌸

ice_set_init_fdir_seg — literally the function that sets up your init flow segment. that's it. that's the name. the manpage gives us nothing else and honestly? iconic minimalism 💅

✨ SYNOPSIS ✨

int ice_set_init_fdir_seg (struct ice_flow_seg_info *seg , enum
       ice_flow_seg_hdr l3_proto , enum ice_flow_seg_hdr l4_proto );

so it returns an int (as functions do 👑) and takes three things. three! not four. we love a manageable arg count 🎀

🦋 ARGUMENTS 🦋

  • seg — the flow segment that's getting programmed, like this is the thing you're handing over to be set up 💖
  • l3_proto — you gotta give it either ICE_FLOW_SEG_HDR_IPV4 or ICE_FLOW_SEG_HDR_IPV6. that's the whole vibe check for layer 3, no other options bestie 🌈
  • l4_proto — and for layer 4 it's either ICE_FLOW_SEG_HDR_TCP or ICE_FLOW_SEG_HDR_UDP. tcp or udp, pick your fighter ⭐

🔥 DESCRIPTION 🔥

okay so what does it actually do: it sets the configuration for perfect filters onto the flow segment you passed in, so the HW filter can be programmed. slay 💅

⚠️ but hear me LOUD: this is to be called only when initializing filters, because this function assumes no filters exist. it literally does not check. it trusts you. do not betray that trust 😭 if you call it at the wrong time you're on your own, fr fr.

🧚 SEE ALSO 🧚

so many friends, so little time — here's the whole group chat:

like i said. huge friend group. no cap 💀

🎀 sign-off 🎀

and that's the whole page, bestie! this one lives in ./drivers/net/ethernet/intel/ice and it's dated October 2026 — yes, the future, because this kernel manpage is ahead of its time ⭐👑

go forth and initialize your filters correctly, mwah 💜💖

📦 where this page comes from