t4_crypto_send(9)

📦 version 7.3.1, in nixpkgs unstable

💖 t4_crypto_send — the Kernel API Manual glow-up (section 9, bestie) 💖

okay so real talk: this is t4_crypto_send(9) from the Kernel API Manual, section 9, and it's honestly such a short king of a function. let's get into it 🫶

✨ NAME ✨

t4_crypto_send — literally just: send crypto packet. that's the whole vibe. 🎀

🌸 SYNOPSIS 🌸

int t4_crypto_send (struct adapter *adap , struct sk_buff *skb );

like yes bestie, it returns an int, and yes, those are the args. no cap.

🦋 ARGUMENTS 🦋

  • adap — the adapter. the whole entire network adapter. main character energy, honestly 👑
  • skb — the packet. the little guy being yeeted. the payload princess 💅

🔥 DESCRIPTION 🔥

So like. it sends a crypto packet. that's the job. 🧚

BUT here's the fun part — and by fun I mean the part you actually need to remember for the exam, bestie 😭 — it doesn't just pick a Tx queue out of thin air. it uses the packet's queue_mapping to choose the appropriate Tx queue, and the mapping is sliced up like this:

  • bit 0 — tells you whether the packet should be sent as regular or as control. one bit. two moods. 🎀
  • bits 1-15 — these bad boys select the queue. that's your queue number, periodt. ✨

so it's giving "bitfield assignment realness" and honestly? ate. 🔥

🌈 SEE ALSO 🌈

okay this is the part where the manpage just goes absolutely feral and lists, like, everything in the whole ./drivers/net/ethernet/chelsio/cxgb4/sge.c file. iykyk. here's the full squad, no one left behind 🫶:

like… 62 entries. she's thorough. she's committed. we respect her. 😭💀

and that's the whole page, bestie — famously short, secretly packed. 💜

ngl this function is way less mysterious than it looks. one bit picks the mood, fifteen bits pick the queue. go forth and slay. 💅

🌷 xoxo, this page came from ./drivers/net/ethernet/chelsio... and was dated October 2026, and it signs off as t4_crypto_send(9) — catch you in the next manpage, mwah 🎀✨🦋

📦 where this page comes from