ixgbe_set_ivar(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ixgbe_set_ivar(9) — from the Kernel API Manual, bestie 🎀

okay so picture this: you're deep in the ixgbe driver, you've got interrupt causes on one side and vectors on the other, and literally nothing is talking to each other. enter ixgbe_set_ivar — it sets the IVAR registers, mapping interrupt causes to vectors. that's the whole vibe. it's giving matchmaker energy ✨

✨ SYNOPSIS ✨

void ixgbe_set_ivar (struct ixgbe_adapter *adapter , s8 direction , u8 queue , u8 msix_vector );

returns void, so like… no receipts, no return value, it just does the thing 🫶

🌸 ARGUMENTS 🌸

  • adapter — pointer to the adapter struct. your main character struct, the one that holds everything 💖
  • direction — 0 for Rx, 1 for Tx, -1 for other causes. yes the -1 is a real value, it's the "other causes" girlie 🙈
  • queue — the queue you're mapping the corresponding interrupt to 💅
  • msix_vector — the vector that gets mapped to the corresponding queue. the other half of the situationship ⭐

🦋 SEE ALSO 🦋

the kernel file itself lives at ./drivers/net/ethernet/intel/ixgbe/ixgbe_main.c — go say hi 📁

and here's the whole group chat, no cap, everybody's invited:

like, the entire friend group showed up to the function's birthday party 😭🔥

quick vibe check: direction only speaks in three languages — 0 Rx, 1 Tx, -1 other causes. don't try to be creative with it 💀

and that's the page, bestie 🧚 this lil' writeup came from ./drivers/net/ethernet/intel/i... (that's the source/version line, truncated exactly like that, don't @ me) and it's dated October 2026 — so it's basically fresh out the group chat. mwah, go set some IVARs 💜🦋✨

📦 where this page comes from