rte_flow_item_raw(3)

📦 version 26.03, in nixos 26.05, nixpkgs unstable

💅 NAME 💅

rte_flow_item_raw

okay so bestie, welcome to the Library Functions Manual — yes that's the manual this page lives in, and yes we're gonna get through it together. This one's all about rte_flow_item_raw, the flow-item struct that lets you match straight-up raw bytes in a packet. no cap. 🎀

✨ SYNOPSIS ✨

#include <rte_flow.h>

🌸 Data Fields

uint32_t relative:1
uint32_t search:1
uint32_t reserved:30
int32_t offset
uint16_t limit
uint16_t length
const uint8_t * pattern

🦋 DESCRIPTION 🦋

So this whole thing is the documentation for RTE_FLOW_ITEM_TYPE_RAW, which — literally — matches a byte string of a given length at a given offset. that's the vibe. 🔥

The offset is either:

  • absolute — measured from the start of the packet, or
  • relative to the end of the previous matched item in the stack — and in that case negative values are allowed. yes, negative. she's flexible. 💅

If search is enabled, offset is used as the starting point. The search area can be delimited by setting limit to a nonzero value, which is the maximum number of bytes after offset where the pattern may start. iykyk. 🔍

Matching a zero-length pattern is allowed — and doing so resets the relative offset for subsequent items. it's giving reset button energy. 🫶

⚠️ Heads up bestie: this type does not support ranges (struct rte_flow_item.last). that's just how it is, periodt.

Definition at line 846 of file rte_flow.h. 📍

🎀 Field Documentation 🎀

🌈 uint32_t relative

Look for pattern after the previous item.

Definition at line 847 of file rte_flow.h.

Search pattern from offset (see also limit).

Definition at line 848 of file rte_flow.h.

🌈 uint32_t reserved

Reserved, must be set to zero.

Definition at line 849 of file rte_flow.h.

💀 not me begging you to actually set it to zero. "must" is not a suggestion bestie, it's a whole requirement.

🌈 int32_t offset

Absolute or relative offset for pattern.

Definition at line 850 of file rte_flow.h.

🌈 uint16_t limit

Search area limit for start of pattern.

Definition at line 851 of file rte_flow.h.

🌈 uint16_t length

Pattern length.

Definition at line 852 of file rte_flow.h.

🌈 const uint8_t* pattern

Byte string to look for.

Definition at line 853 of file rte_flow.h.

🧚 Author 🧚

Generated automatically by Doxygen for DPDK from the source code. she's not hand-written, she's auto-generated and she's still iconic. ✨

that's the whole page, bestie — you ate that. this adorable lil' doc is from DPDK Version 26.03.0 and it's the rte_flow_item_raw(3) page, so go forth and match those raw bytes. mwah 💖🎀🦋

📦 where this page comes from