gsm_control_response(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gsm_control_response — from the Kernel API Manual, bestie

okay so we're deep in gsm_control_response(9) territory today, and yes this is a section-9 manpage, meaning it's a kernel-internal thing, meaning it's for people writing the code, not for people just using it. buckle up 🎀

✨ NAME ✨

gsm_control_response — process a response to our control 💌

🌸 SYNOPSIS 🌸

void gsm_control_response (struct gsm_mux *gsm , unsigned int command ,
const u8 *data , int clen );

that's it. that's the whole call. she takes four things and returns <pink>void</pink> — no return value, no drama, no notes 😌

🦋 ARGUMENTS 🦋

  • gsm — our GSM mux 💫 like, the mux that's ours, the one we're working with
  • command — the command (response) EA ⭐ that's the EA byte of the response, specifically
  • data — data beyond the command/length EA 🍓 so like, everything after the EA and length bytes, not including them
  • clen — length 🌸 the length, obviously, it's giving "length"

🔥 DESCRIPTION 🔥

ok so here's the vibe: you've got an outstanding command chilling out there, and this function processes a response to it. it's literally that.

we only allow a single control message in flight at any one time — like, one (1) control message, no more, that's the rule — so honestly this is fairly easy. no cap, the logic is not doing backflips here.

and here's the part that matters: all the clean up is done by the caller. not us. we are not the cleanup crew. we just:

  • update the fields
  • flag it as done
  • return

that's the whole job. we update, we flag, we dip. main character energy but make it minimal 💅

👑 SEE ALSO 👑

so there's a lot of family here — this is the ./drivers/tty/n_gsm.c kernel file crowd, and they all showed up to the group chat:

like I said. the whole family reunion 🫶

lowkey a reminder: this page lives in the kernel file ./drivers/tty/n_gsm.c — that's the source of truth, go read her if you want the real tea ☕

and that's the page, bestie! this little gem is from the ./drivers/tty corner of the tree, stamped October 2026 — go forth and process those responses responsibly, mwah 💖🧚‍♀️

📦 where this page comes from