rte_memzone(3)

💖 rte_memzone 💖

okay bestie, gather round, because today we're meeting rte_memzone — the main character of the DPDK memory world. this page lives in section 3 of the manual (Library Functions Manual, iykyk), so think of it as the little laminated card taped to the inside of your locker that explains exactly what a memzone is. no cap, every field, every line number, every "Definition at line" — it's all here. let's go 🦋

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✨ NAME ✨

rte_memzone — the struct that describes a memzone, periodt.

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🌸 SYNOPSIS 🌸

#include <rte_memzone.h>

🎀 Data Fields

so here's the lineup of fields, in the order the page lists them:

• char name [RTE_MEMZONE_NAMESIZE]
• rte_iova_t iova
• size_t len
• uint64_t hugepage_sz
• int32_t socket_id
• uint32_t flags

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💅 Detailed Description 💅

A structure describing a memzone, which is a contiguous portion of physical memory identified by a name.

fr fr, that's the whole vibe: a memzone is a chunk of physical memory, it's contiguous, and you find it again by its name. that's it. that's the girl. 👑

Definition at line 48 of file rte_memzone.h.

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🧚 Field Documentation 🧚

this is the part where we meet every single member one by one, like a reality show intro sequence. no skips, no cuts. 🌈

• char name[RTE_MEMZONE_NAMESIZE] — Name of the memory zone.

Definition at line 51 of file rte_memzone.h.

• rte_iova_t iova — Start IO address.

Definition at line 53 of file rte_memzone.h.

• void* addr — Start virtual address.

Definition at line 55 of file rte_memzone.h.

• uint64_t addr_64 — Makes sure addr is always 64-bits. (yes, it really does say that, and yes, it's iconic of it to just announce its whole purpose like that 😭)

Definition at line 56 of file rte_memzone.h.

• size_t len — Length of the memzone.

Definition at line 58 of file rte_memzone.h.

• uint64_t hugepage_sz — The page size of underlying memory.

Definition at line 60 of file rte_memzone.h.

• int32_t socket_id — NUMA socket ID.

Definition at line 62 of file rte_memzone.h.

• uint32_t flags — Characteristics of this memzone.

Definition at line 64 of file rte_memzone.h.

psst — tiny lil heads-up so you're not confused later: the Data Fields list up in the synopsis doesn't name addr or addr_64, but the Field Documentation absolutely does, at lines 55 and 56. i'm not fixing it, i'm just telling you, because that's how the page reads. 💜

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🫶 Author 🫶

Generated automatically by Doxygen for DPDK from the source code.

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okay and that's the whole page, bestie!! you now know rte_memzone better than it knows itself. this little doc came to you courtesy of DPDK, Version 25.11.3 — so if you're out here slaying with memzones, that's the version whose manual you just read. mwah, go build something gorgeous. 💖✨🎀🦋🌸💅