rte_mempool_ops_table(3)

📦 version 26.03, in nixos 26.05, nixpkgs unstable

💅 rte_mempool_ops_table — a Library Functions Manual moment

okay bestie, gather round, because this one's a struct, and she's iconic. her whole name is rte_mempool_ops_table and she lives in the Library Functions Manual section, so you already know she's fancy.

✨ NAME ✨

rte_mempool_ops_table — literally the table of registered ops structs, no cap 🫶

🌸 SYNOPSIS 🌸

#include <rte_mempool.h>

🎀 Data Fields 🎀

  • rte_spinlock_t sl
  • uint32_t num_ops
  • struct rte_mempool_ops ops [RTE_MEMPOOL_MAX_OPS_IDX]

🦋 Detailed Description 🦋

okay so picture this: it's a structure storing the table of registered ops structs, and each one of those bad boys contains the function pointers for the mempool ops functions. main character energy fr fr 💅

here's the tea though — each process has its own storage for this ops struct array so that the mempools can be shared across primary and secondary processes. yes bestie, shared. slay.

the way that works: the indices used to access the array are valid across processes, whereas any function pointers stored directly in the mempool struct would not be. 😭 big difference. so instead of yeeting raw pointers around, this results in us simply having ops_index in the mempool struct. periodt. that's the whole vibe.

ngl this is the kind of design detail you'll be glad you clocked later — the indices are the thing that travels between processes, not the pointers. iykyk. 🔥

Definition at line 730 of file rte_mempool.h.

🌈 Field Documentation 🌈

💜 rte_spinlock_t sl

spinlock for add/delete. that's it, that's the whole field. keeping it safe while the table gets edited 🫶

Definition at line 731 of file rte_mempool.h.

🍓 uint32_t num_ops

the number of used ops structs in the table. so like, how many slots are actually taken. 👑

Definition at line 732 of file rte_mempool.h.

🧚 struct rte_mempool_ops ops[RTE_MEMPOOL_MAX_OPS_IDX]

storage for all possible ops structs — the full RTE_MEMPOOL_MAX_OPS_IDX array, every slot accounted for. ⭐

Definition at line 736 of file rte_mempool.h.

👑 Author 👑

Generated automatically by Doxygen for DPDK from the source code. so nobody hand-wrote this one, the tooling ate and left no crumbs. 💀

aaaand that's the page, bestie! ✨ this lil' writeup came to you courtesy of DPDK, Version 26.03.0, sitting right there in the rte_mempool_ops_table(3) footer. go share some mempools responsibly 🫶💖🎀

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