rtl83xx_port_fdb_dump(9)

📦 version 7.3.1, in nixpkgs unstable

💅 rtl83xx_port_fdb_dump(9) — the Kernel API Manual glow-up 🎀

okay so bestie, welcome to the rtl83xx_port_fdb_dump(9) page!! this is from the Kernel API Manual and it's literally the lil function that goes through a port's FDB and tells you about every entry 🦋

✨ NAME ✨

rtl83xx_port_fdb_dump — the way this one iterates over the FDB entries that are associated with a port. that's it, that's the vibe 💅

🌸 SYNOPSIS 🌸

int rtl83xx_port_fdb_dump (struct dsa_switch *ds , int port ,
       dsa_fdb_dump_cb_t *cb , void *data );

it returns an int, and it takes those four things up there. keep reading, i'm gonna break them down one by one 🫶

👑 ARGUMENTS 👑

  • ds — the DSA switch instance. like, the whole switch, the main character of this call 🌈
  • port — the port index. this is the port we're dumping the FDB for, periodt.
  • cb — the callback, and no cap it gets invoked for each entry. every single matching one 💖
  • data — an opaque pointer that gets passed to cb. it just gets carried along for the ride, we don't look inside it 🙈

🧚 DESCRIPTION 🧚

so this function walks the unicast FDB entries associated with port, and calls cb for each matching entry. yes, literally every match gets a callback, that's the whole thing. she's an iterator and she ate 🔥

⭐ CONTEXT ⭐

can sleep. 😴 lowkey the easiest context note ever — no spinning, no "don't call me from here", just a nap-friendly function. slay.

💜 RETURN 💜

  • 0 on success 💚
  • or a negative value for failure 😭

that's it, that's the whole return contract, iykyk.

💀 SEE ALSO 💀

kernel file ./drivers/net/dsa/realtek/rtl83xx.c — go read the source bestie, it's giving main character energy:

look at that roster, it's iconic, the whole realtek DSA friend group came out for this one 🧚✨

and that's the page!! 🍓 this beauty lives in ./drivers/net/dsa/realtek and the manual date is October 2026 — so mark your calendar bestie, go forth and dump some FDB entries 💖✨🎀

📦 where this page comes from