iavf_flex_rx_tstamp(9)

📦 version 7.3.1, in nixpkgs unstable

💅 iavf_flex_rx_tstamp(9) 💅

okay so bestie, welcome to the kernel API manual, and today's main character is iavf_flex_rx_tstamp — the little function whose whole job is grabbing the Rx timestamp off the descriptor and handing it up the stack. it's giving "small but essential", fr fr. ✨

🌸 SYNOPSIS 🌸

void iavf_flex_rx_tstamp (const struct iavf_ring *rx_ring , __le64 qw2 ,
__le64 qw3 , struct sk_buff *skb );

no return value, no drama — it's void, it does its thing, it leaves. periodt. 💅

🎀 ARGUMENTS 🎀

  • rx_ring — the descriptor ring, aka the whole vibe of where this descriptor lives. it's a const struct iavf_ring * so nobody's out here editing it, we're just looking. 👀
  • qw2 — quad word 2 of the descriptor. yes, "quad word", it's a whole thing, we don't question it, it's an __le64.
  • qw3 — quad word 3 of the descriptor. also an __le64. the two of them are lowkey a duo. 🫶
  • skb — the struct sk_buff * currently being received — the packet-in-progress, the one that's about to get its timestamp glow-up. 💖

🦋 DESCRIPTION 🦋

so what does it actually do? it reads the Rx timestamp value straight out of the descriptor and passes it to the stack. that's it, that's the function. iconic behaviour, honestly. 🎀

⚠️ big caveat energy: this function only operates on the VIRTCHNL_RXDID_2_FLEX_SQ_NIC flexible descriptor writeback format. like — only that one. if you're picturing some other descriptor format, nope, not here, this function is not for you. no cap. 💀

🌈 SEE ALSO 🌈

first up, the source of truth, the place where it actually lives:

  • Kernel file ./drivers/net/ethernet/intel/iavf/iavf_txrx.c

and now the extended friend group — the whole squad of related functions, all here, all accounted for, screenshot-worthy list incoming 📸:

like, the way that list just keeps going?? obsessed. 💜

and that's the whole page bestie, you ate that 🍓 — this little gem lives down in ./drivers/net/ethernet/intel/iavf, dated October 2026, and it's forever known as iavf_flex_rx_tstamp(9). mwah 💋✨

📦 where this page comes from