rte_ring(3)

💖 rte_ring — a manual page, but make it a group chat 💖

okay so bestie, welcome to rte_ring(3) — she's from the Library Functions Manual and she is genuinely iconic. buckle up 🎀

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✨ NAME ✨

rte_ring — the star of the show, the main character, the one and only 💅

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🌸 SYNOPSIS 🌸

#include <rte_ring_core.h>

literally just that one include and you're in, no cap 🫶

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🦋 Data Structures 🦋

• union __rte_cache_aligned

there she is. the cache-aligned union. obsessed ✨

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🍓 Data Fields 🍓

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

six fields, all accounted for, we do not skip, we do not summarise 💜

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👑 Detailed Description 👑

so here's the tea. this is An RTE ring structure. 💖

now the spicy part: the producer and the consumer each have a head</> and a tail</> index. and the particularity of these indexes (yes, "particularity", we're being fancy today) is that they are NOT between 0 and size(ring)-1. nope. plot twist. 🌈

these indexes live between 0 and 2^32 -1, and they only get masked when we actually go touch the ring[] field. it's giving "don't look at me directly, look at my masked version" 🙈

and because we set it up like that, we can just straight-up do subtractions between 2 index values in a modulo-32bit base — which is exactly why the overflow of the indexes is not a problem. not a single problem. it just works. slay 🔥

Definition at line 116 of file rte_ring_core.h. ✨

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💀 Field Documentation 💀

🎀 char name[RTE_RING_NAMESIZE]

it's the Name of the ring. that's it, that's the field. she's simple, she's elegant, she names things. 💖

Definition at line 117 of file rte_ring_core.h.

🎀 int flags

the Flags supplied at creation. whatever you passed in when you made her, it lives here. periodt. ✨

Definition at line 119 of file rte_ring_core.h.

🎀 const struct rte_memzone* memzone

the Memzone, if any, containing the rte_ring. note the "if any" bestie — sometimes there just isn't one, and that's valid 🫶

Definition at line 120 of file rte_ring_core.h.

🎀 uint32_t size

the Size of ring. how big she is. iconic. 💅

Definition at line 122 of file rte_ring_core.h.

🎀 uint32_t mask

the Mask (size-1) of ring. that's size-1, exactly like that, don't come for me, that's what it says 🍓

Definition at line 123 of file rte_ring_core.h.

🎀 uint32_t capacity

the Usable size of ring. usable size. because size and usable size are two different things and we respect that. 🌸

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 like… nobody hand-wrote this, the machine did it, and honestly? she ate. 💅✨

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okay that's the whole page, you're welcome, go forth and ring responsibly 🦋

DPDK · Version 25.11.3 · rte_ring(3) — bye bestie, mwah 💖🎀🧚