gsm_data_queue(9)

💅 gsm_data_queue(9) — the gen-z bestie guide

okay so real talk, this one is from the Kernel API Manual and it's a tiny lil function with a big job. buckle up bestie, it's giving "small but booked and busy" 🎀

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✨ NAME ✨

gsm_data_queue — queue a UI or UIH frame. that's it. that's the whole job. iconic honestly 💅

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🌸 SYNOPSIS 🌸

void gsm_data_queue (struct gsm_dlci *dlci , struct gsm_msg *msg );

no return value, it just does the thing and dips. main character energy, periodt 💜

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🦋 ARGUMENTS 🦋

• dlci — the DLCI that's sending the data. it's the one pushing the frame out the door 🫶
• msg — the message getting queued up. this is the actual payload bestie 💌

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🔥 DESCRIPTION 🔥

okay so here's the vibe: this function adds data to the transmit queue, and then it tries to get stuff moving out of the mux tty — but only if that isn't already happening. no duplicate effort, we're efficient here ✨

and the way that it does all this? it takes the gsm tx lock and the dlci lock. locking queen 👑

ngl the "tries to get stuff moving" wording means it's a nudge, not a guaranteed instant flush. don't @ me, that's literally what the man page says 💀

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💀 SEE ALSO 💀

okay this list is LONG, like genuinely a whole friend group 💖 but every single one of them is part of the Kernel file ./drivers/tty/n_gsm.c saga, so here we go, in order:

• gsm_fcs_add(9)
• gsm_fcs_add_block(9)
• gsm_read_ea(9)
• gsm_read_ea_val(9)
• gsm_encode_modem(9)
• gsm_encode_params(9)
• gsm_register_devices(9)
• gsm_unregister_devices(9)
• gsm_print_packet(9)
• gsm_stuff_frame(9)
• gsm_send(9)
• gsm_dlci_clear_queues(9)
• gsm_response(9)
• gsm_command(9)
• gsm_data_alloc(9)
• gsm_send_packet(9)
• gsm_is_flow_ctrl_msg(9)
• gsm_data_kick(9)
• __gsm_data_queue(9)
• gsm_dlci_data_output(9)
• gsm_dlci_data_output_framed(9)
• gsm_dlci_modem_output(9)
• gsm_dlci_data_sweep(9)
• gsm_dlci_data_kick(9)
• gsm_control_command(9)
• gsm_control_reply(9)
• gsm_process_modem(9)
• gsm_process_negotiation(9)
• gsm_control_modem(9)
• gsm_control_negotiation(9)
• gsm_control_rls(9)
• gsm_control_message(9)
• gsm_control_response(9)
• gsm_control_keep_alive(9)
• gsm_control_transmit(9)
• gsm_control_retransmit(9)
• gsm_control_send(9)
• gsm_control_wait(9)
• gsm_dlci_close(9)
• gsm_dlci_open(9)
• gsm_dlci_negotiate(9)
• gsm_dlci_t1(9)
• gsm_dlci_begin_open(9)
• gsm_dlci_set_opening(9)
• gsm_dlci_set_wait_config(9)
• gsm_dlci_begin_close(9)
• gsm_dlci_data(9)
• gsm_dlci_command(9)
• gsm_kick_timer(9)
• gsm_dlci_copy_config_values(9)
• gsm_dlci_config(9)
• gsm_dlci_alloc(9)
• gsm_dlci_free(9)
• gsm_dlci_release(9)
• gsm_queue(9)
• gsm0_receive_state_check_and_fix(9)
• gsm0_receive(9)
• gsm1_receive_state_check_and_fix(9)
• gsm1_receive(9)
• gsm_error(9)
• gsm_cleanup_mux(9)
• gsm_activate_mux(9)
• gsm_free_mux(9)
• gsm_free_muxr(9)
• gsm_alloc_mux(9)
• gsmld_output(9)
• gsmld_write_trigger(9)
• gsmld_write_task(9)
• gsmld_attach_gsm(9)
• gsmld_detach_gsm(9)
• gsmld_flush_buffer(9)
• gsmld_close(9)
• gsmld_open(9)
• gsmld_write_wakeup(9)
• gsmld_read(9)
• gsmld_write(9)
• gsmld_poll(9)
• gsm_modem_upd_via_data(9)
• gsm_modem_upd_via_msc(9)
• gsm_modem_update(9)
• gsm_wait_modem_change(9)

like… that's the whole extended universe. iykyk 🌈

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🧚 sign-off 🧚

so yeah, that's the page — it lives in ./drivers/tty (that's the source/version bit bestie), and it's dated October 2026 ⭐ go forth and queue those UI/UIH frames, you absolute legend 👑💖

slay ✨