rte_ring(3)

💫 rte_ring 💫

okay so bestie, welcome to the rte_ring(3) page from the Library Functions Manual — yes, that's the vibe, it's a manual page, we're reading it together, and honestly? it's giving iconic kernel-adjacent energy. Let's go 🎀

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✨ NAME ✨

rte_ring — that's it, that's the name, no long dramatic subtitle, she's mysterious like that 💅

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🌸 SYNOPSIS 🌸

#include <rte_ring_core.h>

🦋 Data Structures

• union __rte_cache_aligned

🍓 Data Fields

• char name [RTE_RING_NAMESIZE]
• int flags
• const struct rte_memzone * memzone
• uint32_t size
• uint32_t mask
• uint32_t capacity

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👑 Detailed Description 👑

so this is an RTE ring structure. simple. elegant. main character.

The producer and the consumer have a head and a tail index. And the particularity of these indexes — pay attention bestie, this is the whole plot — is that they are not between 0 and size(ring)-1. Nope. These indexes are between 0 and 2^32 -1, and we mask their value when we access the ring[] field. 🫶

Thanks to this assumption, we can do subtractions between 2 index values in a modulo-32bit base: that's why the overflow of the indexes is not a problem. no cap, the overflow is literally not a problem, she thought of everything ✨

Definition at line 116 of file rte_ring_core.h.

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💖 Field Documentation 💖

char name[RTE_RING_NAMESIZE]

Name of the ring. her government name. 💜

Definition at line 117 of file rte_ring_core.h.

int flags

Flags supplied at creation. the ~lore~ she was born with 🌈

Definition at line 119 of file rte_ring_core.h.

const struct rte_memzone* memzone

Memzone, if any, containing the rte_ring. if any 👀 — sometimes she's got a memzone, sometimes she doesn't, we don't judge 😭

Definition at line 120 of file rte_ring_core.h.

uint32_t size

Size of ring. that's the size. 💀

Definition at line 122 of file rte_ring_core.h.

uint32_t mask

Mask (size-1) of ring. the math is math-ing 🧚

Definition at line 123 of file rte_ring_core.h.

uint32_t capacity

Usable size of ring. note the word usable — she's not like the other sizes 💅

Definition at line 124 of file rte_ring_core.h.

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🌟 Author 🌟

Generated automatically by Doxygen for DPDK from the source code. so nobody actually wrote this with their hands, the machine did it, and honestly she ate 🔥

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aaaand scene 💖 sign-off time: this whole thing is DPDK, Version 26.03.0, rte_ring(3), straight from the source code via Doxygen — that's the footer, that's the date slot, that's the whole vibe, mwah 🎀✨🦋