llc_sap_action_send_test_c(9)

📦 version 7.3.1, in nixpkgs unstable

💅 llc_sap_action_send_test_c(9) 💅

okay so bestie, welcome to the Kernel API Manual — yes we're reading manpages now, this is our era 🎀. Today's main character is llc_sap_action_send_test_c, and honestly? she's a little function with a big job and i'm obsessed.

✨ NAME ✨

llc_sap_action_send_test_c — send TEST PDU to MAC in resp to TEST REQ 🦋

like literally that's the whole vibe. send a TEST, respond to a REQ, slay.

🌸 SYNOPSIS 🌸

int llc_sap_action_send_test_c (struct llc_sap *sap , struct sk_buff
*skb );

she takes two things and returns an int, no cap. that's it, that's the signature, don't come for her 💅

🎀 ARGUMENTS 🎀

  • sap — the SAP. that's it. that's the description. SAP. (iconic minimalism, honestly)
  • skb — the event to send ✨ this is the little guy going out into the world.

🦋 DESCRIPTION 🦋

okay so here's what she actually does, and it's giving responsible queen 👑

She sends a TEST command PDU to the MAC layer in response to a TEST REQUEST primitive from the network layer. like, network layer asks "hey is everything ok", and she's the one who actually forwards that question down to MAC. teamwork!! 🫶

She's also kinda picky in the best way, because before doing anything she verifies two things:

  • verify the event is a primitive type event ✅
  • verify the primitive is a TEST REQUEST ✅

so like, she does her vibe check first. if the event isn't a primitive type event, or the primitive isn't a TEST REQUEST, that's not her business, periodt. (no guessing, no extra behaviour — that's all the manpage gives us, and we respect the source 💖)

🌈 SEE ALSO 🌈

go read these next, bestie, they're all in the kernel file ./net/llc/llc_s_ac.c 📚

a whole friend group of llc_sap_action_* functions and they all ate 🔥

ngl the whole page is short but she's booked and busy — verify, send, exit. main character energy fr fr 💀✨

and that's the tea, bestie 🍓 this lil gem lives in ./net/llc, and the source/version + date on the tin is October 2026 — so yeah, timestamped and cute. see you in the next manpage, mwah 😭💜🧚

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