rte_eth_fdir_action(3)

📦 version 26.03, in nixos 26.05, nixpkgs unstable

💅 rte_eth_fdir_action(3) — a.k.a. the "what do we even DO when the filter matches" struct

okay so bestie, welcome to rte_eth_fdir_action(3), straight out of the Library Functions Manual section of the DPDK docs — and no cap, this one's a little baby struct that does one very specific job. let's get into it. 🫶

✨ NAME ✨

rte_eth_fdir_action — the struct you fill in to say what happens when an FDIR packet filter matches. that's it. that's the whole vibe. 💫

🌸 SYNOPSIS 🌸

#include <rte_eth_ctrl.h>

🎀 Data Fields 🎀

uint16_t rx_queue
enum rte_eth_fdir_behavior behavior
enum rte_eth_fdir_status report_status
uint8_t flex_off

these are the four fields, in order, periodt. we'll get to each one below in its own little spotlight moment 👑

🦋 Detailed Description 🦋

so, like, picture this: you've set up a Flow Director (FDIR) packet filter, and it matches a packet. iconic. but then what?? 🤔 that's literally what this structure is for — it's a structure used to define an action when match FDIR packet filter.

it lives at Definition at line 327 of file rte_eth_ctrl.h. memorize that, it's giving very "meet me at the library at 3pm" energy 📚

💖 Field Documentation 💖

⭐ uint16_t rx_queue

Queue assigned to if FDIR match.

translation: when the filter matches, this is the queue that gets the packet. the one being assigned to. yes that sentence is worded exactly like that and we're respecting it 🙏

Definition at line 328 of file rte_eth_ctrl.h.

⭐ enum rte_eth_fdir_behavior behavior

Behavior will be taken.

that's it. that's the description. the behavior that will be taken. short, mysterious, main character energy honestly 💅

Definition at line 329 of file rte_eth_ctrl.h.

⭐ enum rte_eth_fdir_status report_status

Status report option.

tl;dr: this decides the status reporting option for the action. very "settings menu" of it ✨

Definition at line 330 of file rte_eth_ctrl.h.

⭐ uint8_t flex_off

okay this one has a whole paragraph, she's the star of the show 🌟

If report_status is RTE_ETH_FDIR_REPORT_ID_FLEX_4 or RTE_ETH_FDIR_REPORT_FLEX_8, flex_off specifies where the reported flex bytes start from in flexible payload.

so like. conditional queen. flex_off only really steps into her moment when report_status is one of those two values — then she tells you where the reported flex bytes start from in the flexible payload. got it? got it. 💜

Definition at line 331 of file rte_eth_ctrl.h.

👑 Author 👑

Generated automatically by Doxygen for DPDK from the source code.

yup, she was literally auto-generated by Doxygen from the DPDK source code — no human hand-wrote this manual page, and honestly? relatable. we've all been on autopilot 😭

bestie reminder: those RTE_ETH_FDIR_REPORT_ID_FLEX_4 and RTE_ETH_FDIR_REPORT_FLEX_8 values are conditionals for flex_off — she doesn't always apply, so don't @ her when she doesn't 💀

and that's the whole page!! 🎀 oh, and before I forget — this is from DPDK, Version 26.03.0, and if you look really closely at the bottom of the original you'll find my girl rte_eth_fdir_action(3) right there in the footer, just chilling next to the version number. slay. go read your packets. 💖🌸🦋

📦 where this page comes from